Exhibit 99.1



LOGO

PENN WEST PETROLEUM LTD.

Annual Information Form

for the year ended December 31, 2015

March 9, 2016



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TABLE OF CONTENTS



|                                                           |  |      |    | 
|---------------------------------------------------------- |  | ---- | -- | 
|                                                           |  | Page |   
|                                                           | 
|GLOSSARY OF TERMS                                          |  |      | 3  | 
|CONVENTIONS                                                |  |      | 4  | 
|ABBREVIATIONS                                              |  |      | 5  | 
|OIL AND GAS INFORMATION ADVISORIES                         |  |      | 5  | 
|CONVERSIONS                                                |  |      | 6  | 
|EFFECTIVE DATE OF INFORMATION                              |  |      | 6  | 
|GENERAL AND ORGANIZATIONAL STRUCTURE                       |  |      | 9  | 
|DESCRIPTION OF OUR BUSINESS                                |  |      | 10 | 
|CAPITALIZATION OF PENN WEST                                |  |      | 15 | 
|DIRECTORS AND EXECUTIVE OFFICERS OF PENN WEST              |  |      | 18 | 
|AUDIT COMMITTEE DISCLOSURES                                |  |      | 22 | 
|DIVIDENDS AND DIVIDEND POLICY                              |  |      | 24 | 
|MARKET FOR SECURITIES                                      |  |      | 26 | 
|INDUSTRY CONDITIONS                                        |  |      | 26 | 
|RISK FACTORS                                               |  |      | 42 | 
|MATERIAL CONTRACTS                                         |  |      | 59 | 
|LEGAL PROCEEDINGS AND REGULATORY ACTIONS                   |  |      | 60 | 
|TRANSFER AGENTS AND REGISTRARS                             |  |      | 60 | 
|INTEREST OF MANAGEMENT AND OTHERS IN MATERIAL TRANSACTIONS |  |      | 60 | 
|INTERESTS OF EXPERTS                                       |  |      | 61 | 
|ADDITIONAL INFORMATION                                     |  |      | 61 | 

APPENDIX A  RESERVES DATA AND OTHER OIL AND GAS INFORMATION

Appendix A-1  Report of Management and Directors on Reserves Data and Other Information

Appendix A-2  Report on Reserves Data

Appendix A-3  Statement of Reserves Data and Other Oil and Gas Information

APPENDIX B  MANDATE OF THE AUDIT COMMITTEE



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GLOSSARY OF TERMS

The following is a glossary of certain terms used in this Annual Information Form.

ABCA means the Business Corporations Act (Alberta), R.S.A. 2000, C. B-9, as amended,
including the regulations promulgated thereunder.

Annual Information Form means this annual information form dated March 9, 2016.

Board or Board of Directors means the board of directors of Penn West.

Common Shares means common shares in the capital of Penn West.

Engineering Report means the report prepared by Sproule dated February 3, 2016 where they evaluated one hundred percent of the crude oil,
natural gas and natural gas liquids reserves of Penn West and the net present value of future net revenue attributable to those reserves effective as at December 31, 2015.

Form 40-F means our Annual Report on Form 40-F for the fiscal year ended December 31, 2015 filed with the SEC.

Gross or gross means:



| | (a) | in relation to our interest in production or reserves, our company gross reserves, which are our working interest (operating or non-operating) share before deduction of royalties and without including any
royalty interests of ours;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | in relation to wells, the total number of wells in which we have an interest; and
| | --- | ---------------------------------------------------------------------------------



| | (c) | in relation to properties, the total area of properties in which we have an interest.
| | --- | -------------------------------------------------------------------------------------

Handbook means the Chartered Professional Accountant Canada Handbook, as amended from time to time.

IFRS means International Financial Reporting Standards, being the standards and interpretations issued by the International Accounting
Standards Board, as amended from time to time. The changeover date to IFRS was January 1, 2011 with retrospective adoption from January 1, 2010 onwards. For periods relating to financial years beginning on or after
January 1, 2011, Canadian generally accepted accounting principles applicable to publicly accountable enterprises is determined with reference to Part I of the Handbook, which is IFRS.

MD&A means managements discussion and analysis.

Net or net means:



| | (a) | in relation to our interest in production or reserves, our working interest (operating or non-operating) share after deduction of royalty obligations, plus our royalty interests in production or reserves;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | in relation to our interest in wells, the number of wells obtained by aggregating our working interest in each of our gross wells; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------------



| | (c) | in relation to our interest in a property, the total area in which we have an interest multiplied by the working interest we own.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------

NI 51-101 means National Instrument 51-101
Standards of Disclosure for Oil and Gas Activities.

Non-Resident means: (i) a person who is not a resident of Canada for the
purposes of the Tax Act; or (ii) a partnership that is not a Canadian partnership for the purposes of the Tax Act.



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NYSE means the New York Stock Exchange.

OPEC means the Organization of the Petroleum Exporting Countries.

Penn West, the Company, the Corporation, we, us oroureachmean Penn West Petroleum Ltd., a corporation existing under the ABCA. Where the context requires, these terms also include all of Penn Wests Subsidiaries on a consolidated basis.

SEC means the United States Securities and Exchange Commission.

Senior Notes means our guaranteed, secured senior notes consisting of US$937 million principal amount of notes, Cdn$73 million principal
amount of notes, £49 million principal amount of notes and 6 million principal amount of notes, all as described under the heading Capitalization of Penn West  Debt Capital  Senior Notes.

Shareholders means holders of our Common Shares.

Sproule means Sproule Associates Limited, independent petroleum consultants of Calgary, Alberta.

Subsidiaries has the meaning ascribed thereto in the Securities Act (Ontario) and, for greater certainty, includes all corporations
and partnerships owned, controlled or directed, directly or indirectly, by Penn West.

Tax Act means the Income Tax Act(Canada), R.S.C. 1985, C. 1 (5th Supp.), as amended, including the regulations promulgated thereunder, as amended from time to time.

TSX means the Toronto Stock Exchange.

undeveloped land and unproved property each mean a property or part of a property to which no reserves have been
specifically attributed.

United States or U.S. means the United States of America.

CONVENTIONS

Certain terms used herein
are defined in the Glossary of Terms. Certain other terms used herein but not defined herein are defined in NI 51-101 and, unless the context otherwise requires, shall have the
same meanings herein as in NI 51-101.

All dollar amounts in this document are expressed in Canadian dollars,
except where otherwise indicated. References to $ or Cdn$ are to Canadian dollars, references to US$ are to United States dollars, references to £ are to pounds
sterling, and references to  are to Euros. On March 9, 2016, the exchange rate based on the noon rate as reported by the Bank of Canada, was Cdn$1.00 equals US$0.7555.

All financial information herein has been presented in accordance with IFRS.



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ABBREVIATIONS



|                            |  |                                    |  |          |  |                                           
|--------------------------- |  | ---------------------------------- |  | -------- |  | ------------------------------------------
|Oil and Natural Gas Liquids |  | Natural Gas                       
|                            |  |                                    | 
|bbl                         |  | barrel or barrels                  |  | GJ       |  | gigajoule                                 
|bbl/d                       |  | barrels per day                    |  | GJ/d     |  | gigajoules per day                        
|Mbbl                        |  | thousand barrels                   |  | Mcf      |  | thousand cubic feet                       
|MMbbl                       |  | million barrels                    |  | MMcf     |  | million cubic feet                        
|NGLs                        |  | natural gas liquids                |  | Bcf      |  | billion cubic feet                        
|MMboe                       |  | million barrels of oil equivalent  |  | Mcf/d    |  | thousand cubic feet per day               
|Mboe                        |  | thousand barrels of oil equivalent |  | MMcf/d   |  | million cubic feet per day                
|boe/d                       |  | barrels of oil equivalent per day  |  | m3
MMbtu |  | cubic metres million British thermal
units



|           |  |                                                                                                                                  |  |  |  | 
|---------- |  | -------------------------------------------------------------------------------------------------------------------------------- |  |  |  | 
|Other      |  |                                                                                                                                 
|AECO       |  | the Alberta benchmark price for natural gas.                                                                                    
|BOE or boe |  | barrel of oil equivalent, using the conversion factor of 6 Mcf of natural gas being equivalent to one barrel of oil.            
|WTI        |  | West Texas Intermediate, the reference price paid in United States dollars at Cushing, Oklahoma for crude oil of standard grade.
|API        |  | American Petroleum Institute.                                                                                                   
|°API       |  | the measure of the density or gravity of liquid petroleum products derived from a specific gravity.                             
|psi        |  | pounds per square inch.                                                                                                         
|MM$        |  | million dollars.                                                                                                                
|MW         |  | megawatt.                                                                                                                       
|MWh        |  | megawatt hour.                                                                                                                  
|CO2        |  | carbon dioxide.                                                                                                                 

OIL AND GAS INFORMATION ADVISORIES

Where any disclosure of reserves data is made in this Annual Information Form (including the Appendices hereto) that does not reflect all of the reserves
of Penn West, the reader should note that the estimates of reserves and future net revenue for individual properties may not reflect the same confidence level as estimates of reserves and future net revenue for all properties, due to the effects of
aggregation.

All production and reserves quantities included in this Annual Information Form (including the Appendices hereto) have been prepared in
accordance with Canadian practices and specifically in accordance with NI 51-101. These practices are different from the practices used to report production and to estimate reserves in reports and
other materials filed with the SEC by United States companies.Nevertheless, as part of Penn Wests Form 40-F for the year ended December 31, 2015 filed with the SEC, Penn West has disclosed proved reserves quantities using the standards
contained in SEC Regulation S-X, and the standardized measure of discounted future net cash flows relating to proved oil and gas reserves determined in accordance with the U.S. Financial Accounting Standards Board, Disclosures About Oil and
Gas Producing Activities, which disclosure complies with the SECs rules for disclosing oil and gas reserves.

References in this Annual
Information Form to land and properties held, owned, acquired or disposed by us, or in respect of which we have an interest, refer to land or properties in respect of which we have a lease or other contractual right to explore for, develop, exploit
and produce hydrocarbons underlying such land or properties.

Boes may be misleading, particularly if used in isolation. A boe conversion
ratio of 6 Mcf: 1 bbl is based on an energy equivalency conversion method primarily applicable at the burner tip and does not represent a value equivalency at the wellhead. Given that the value ratio based on the current price of crude oil as
compared to natural gas is significantly different from the energy equivalency conversion ratio of 6:1, utilizing a conversion on a 6:1 basis is misleading as an indication of value.



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CONVERSIONS

The following table sets forth certain conversions between Standard Imperial Units and the International System of Units (or metric units).



|                         |  |              |  |            
|------------------------ |  | ------------ |  | -----------
|To Convert From          |  | To           |  | Multiply By
|                         |  |             
|Mcf                      |  | cubic metres |  | 28.174     
|cubic metres             |  | cubic feet   |  | 35.494     
|bbl                      |  | cubic metres |  | 0.159      
|cubic metres             |  | bbl          |  | 6.293      
|feet                     |  | metres       |  | 0.305      
|metres                   |  | feet         |  | 3.281      
|miles                    |  | kilometres   |  | 1.609      
|kilometres               |  | miles        |  | 0.621      
|acres                    |  | hectares     |  | 0.405      
|hectares                 |  | acres        |  | 2.500      
|gigajoules (at standard) |  | MMbtu        |  | 0.948      
|MMbtu (at standard)      |  | gigajoules   |  | 1.055      
|gigajoules (at standard) |  | Mcf          |  | 1.055      

EFFECTIVE DATE OF INFORMATION

Except where otherwise indicated, the information in this Annual Information Form is presented as at the end of Penn Wests most recently completed
financial year, being December 31, 2015.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

In the interest of providing our securityholders and potential investors with information regarding Penn West, including managements assessment of Penn
Wests future plans and operations, certain statements contained and incorporated by reference in this document constitute forward-looking statements or information (collectively forward-looking statements) within the meaning
of applicable securities legislation. Forward-looking statements are typically identified by words such as anticipate, continue, estimate, expect, forecast, budget,
may, will, project, could, plan, intend, should, believe, outlook, objective, aim, potential,
target and similar words suggesting future events or future performance. In addition, statements relating to reserves or resources are deemed to be forward-looking statements as they involve the implied
assessment, based on certain estimates and assumptions, that the reserves and resources described exist in the quantities predicted or estimated and can be profitably produced in the future. In particular, this document and the documents
incorporated by reference herein contain, without limitation, forward-looking statements pertaining to the following: our focus on profitability and goals of growing production per share, cash flow per share and strengthening our balance sheet
position; our commitment to maximizing the efficiency of our capital programs and the reliability of our production base while growing the oil and liquids weighting of our total production; our belief that our long-term plan to deleverage our
balance sheet, continue operational and cost control improvements, and focus on light oil development integrated with waterflood programs concentrated in our Cardium, Slave Point and Viking plays is the best strategy available to maximize
Shareholder value; the objective of our long-term plan to provide Shareholders with compound annual per share growth in oil production and funds flow subsequent to a deleveraging period and provide Shareholders with a return through a sustainable
dividend; our intention to defer certain longer cycle time projects, waterflood project capital and other non-development capital projects until the industry returns to a stable and higher oil price environment; the details of our 2016 capital
budget, which limits total expenditure to funds flow from operations, and our average production guidance for 2016; the details of our class action lawsuit settlement; the details of our ongoing acquisition, disposition, farm-out and financing
strategy; our dividend policy, including the amount of dividends that we intend to pay, the proposed timing of such payments, the factors that may affect the amount of dividends that we pay and the anticipated timing of the Boards review of
our dividend policy; our expectations regarding the operational and financial impact that climate change regulations in the jurisdictions in which we operate will have on us; our belief that the trend towards heightened and additional standards in
environmental legislation and regulation will continue and our expectation that we will be making increased expenditures as a result of the expansion of our operations and the adoption of new



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legislation relating to the protection of the environment; our commitment to mitigating the environmental impact from our operations and involving stakeholders throughout the exploration,
development, production and abandonment process; pursuing a program of environmental impact reduction aimed at minimizing these future corporate liabilities without hampering field productivity; being committed to meeting responsibilities to protect
the environment wherever it operates; believing that the Company is currently in compliance with applicable environmental laws and regulations in all material respects; our assessment of the operational and financial impacts that certain risks
factors could have on us and the value of our Common Shares should such risk factors materialize; the quantity of our oil, natural gas liquids and natural gas reserves, the recoverability thereof, and the net present values of future net revenue to
be derived from our reserves using forecast prices and costs, including the disclosure set forth in Appendix A-3 under Statement of Reserves Data and Other Oil and Gas Information  Reserves Data; the amount of royalties, operating
costs, development costs, abandonment and reclamation costs and income taxes that we will incur in connection with the production of our reserves; our outlook for oil, natural gas liquids and natural gas prices; our expectations regarding future
currency exchange rates and inflation rates; our expectations regarding how we will fund the development costs of our reserves; our expectation that interest and other funding costs will not make the development of any of our properties uneconomic;
our expectations regarding the timing for developing our proved undeveloped reserves and probable undeveloped reserves and the amount of future capital expenditures required to develop such reserves; our expectations regarding the significant
economic factors and other significant uncertainties that could affect our reserves data; the number of net well bores, facilities and the length of pipeline in respect of which we expect to incur abandonment and reclamation costs and the total
amount of such costs that we expect to incur and the timing thereof; the details of our exploration and development plans in each of our Cardium, Slave Point and Viking resource plays in 2016, including that the Cardium and Viking capital budgets
are expected to be minimal in response to the weak commodity price environment as the Company targets its capital expenditures to be within funds flow from operations and in Slave Point that the Company has no development capital activity planned in
the area but will continue to assess and monitor production results; the details of how our waterflood programs will be dealt with in the current commodity market; the details of our 2016 capital budget; the expected lands that will be surrendered
unless we qualify them in some manner; our expectations regarding when we will be required to pay income taxes; our production volume estimates for 2016; our intention to continue to actively identify and evaluate hedging opportunities in order to
reduce our exposure to fluctuations in commodity prices and protect our future cash flows and capital programs; and the nature of, effectiveness of, and benefits to be derived from, our future marketing arrangements and risk management strategies.

With respect to forward-looking statements contained or incorporated by referencein this document, we have made assumptions regarding, among
other things: 2016 prices of $33.00 per barrel WTI and $2.45 per Mcf AECO and a 2016 US$/Cdn$ foreign exchange rate of $1.45; that the Company does not dispose of additional material producing properties; the terms and timing of asset sales
anticipated to be completed under our ongoing program to sell non-core assets; our ability to execute our long-term plan as described herein and in our other disclosure documents and the impact that the successful execution of such plan will have on
us and our shareholders; the economic returns anticipated from expenditures on our assets; future crude oil, natural gas liquids and natural gas prices and differentials between light, medium and heavy oil prices and Canadian, WTI and world oil and
natural gas prices; future capital expenditure levels and capital programs; future crude oil, natural gas liquids and natural gas production levels; the laws and regulations that we will be required to comply with, including laws and regulations
relating to taxation, royalty regimes and environmental protection, and the continuance of those laws and regulations; that we will have the financial resources required to fund our capital and operating expenditures and requirements as needed;
drilling results and the recoverability of our reserves; the estimates of our reserves volumes and the assumptions related thereto (including commodity prices and development costs) are accurate in all material respects; the amount of royalties,
operating costs, development costs, abandonment and reclamation costs and income taxes that we will incur in connection with the production of our reserves; future exchange rates, inflation rates and interest rates; future debt levels; future income
tax rates; the amount of tax pools available to us; the cost of expanding our property holdings; our ability to execute our capital programs as planned without significant adverse impacts from various factors beyond our control, including weather,
infrastructure access and delays in obtaining regulatory approvals and third party consents; our ability to obtain equipment in a timely manner to carry out development activities and the costs thereof; our ability to market our oil and natural gas
successfully to current and new customers; our ability to reduce our exposure to commodity price fluctuations and counterparty risks through our risk management programs; the impact of increasing competition; our ability to obtain financing on
acceptable terms, including our ability to renew or replace our credit facility and our ability to finance the repayment of our senior secured notes on maturity; that our conduct and results of operations will be consistent with expectations; our
ability to add production and reserves through our development and exploitation activities; our ability to negotiate further definitive amending agreements in respect of our credit facilities and senior notes that are mutually satisfactory to the
parties thereto, if necessary; and that we will have the ability to develop our oil and gas properties in the manner currently contemplated. In addition, many of the forward-looking statements contained or incorporated by reference



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in this document are located proximate to assumptions that are specific to those forward-looking statements, and such assumptions should be taken into account when reading such forward-looking
statements: see in particular the assumptions identified in Appendix A-3 under Statement of Reserves Data and Other Oil and Gas Information  Reserves Data and Statement of Reserves Data and Other Oil and Gas Information
 Notes to Reserves Data Tables.

Although Penn West believes that the expectations reflected in the forward-looking statements contained or
incorporated by reference in this document, and the assumptions on which such forward-looking statements are made, are reasonable, there can be no assurance that such expectations will prove to be correct. Readers are cautioned not to place
undue reliance on forward-looking statements included or incorporated by reference in this document, as there can be no assurance that the plans, intentions or expectations upon which the forward-looking statements are based will occur. By
their nature, forward-looking statements involve numerous assumptions, known and unknown risks and uncertainties that contribute to the possibility that the predictions, forecasts, projections and other forward-looking statements contained herein
will not be correct, which may cause our actual performance and financial results in future periods to differ materially from any estimates or projections of future performance or results expressed or implied by such forward-looking
statements. These risks and uncertainties include, among other things: the possibility that we are unable to execute some or all of our ongoing non-core asset disposition program on favourable terms or at all, whether due to the failure to
receive requisite regulatory or other third party approvals or satisfy applicable closing conditions or for other reasons that we cannot anticipate; the possibility that we will not be able to successfully execute our long-term plan in part or in
full, and the possibility that some or all of the benefits that we anticipate will accrue to us and our securityholders as a result of the successful execution of such plan do not materialize; the impact of weather conditions on seasonal demand; the
impact of weather conditions on our ability to execute capital programs; the risk that we will be unable to execute our capital programs as planned without significant adverse impacts from various factors beyond our control, including weather,
infrastructure access and delays in obtaining regulatory approvals and third party consents; risks inherent in oil and natural gas operations; uncertainties associated with estimating reserves and resources; competition for, among other things,
capital, acquisitions of reserves, resources, undeveloped lands and skilled personnel; incorrect assessments of the value of acquisitions, including the historical acquisitions discussed herein; geological, technical, drilling and processing
problems; general economic and political conditions in Canada, the U.S., Europe and globally, and in particular, the effect that those conditions have on commodity prices and our access to capital; industry conditions, including fluctuations in the
price of crude oil, natural gas liquids and natural gas, price differentials for crude oil and natural gas produced in Canada as compared to other markets and transportation restrictions, including pipeline and railway capacity constraints;
royalties payable in respect of our oil and natural gas production and changes to government royalty frameworks in jurisdictions in which we operate and the impact that such changes may have on us; changes in government regulation of the oil and
natural gas industry, including environmental regulation; fluctuations in foreign exchange or interest rates; unanticipated operating events or environmental events that can reduce production or cause production to be shut-in or delayed, including
extreme cold during winter months, wild fires and flooding; failure to obtain regulatory, industry partner and other third-party consents and approvals when required, including for acquisitions, dispositions, joint ventures, partnerships and
mergers; failure to realize the anticipated benefits of dispositions, acquisitions, joint ventures and partnerships, including the historical dispositions, acquisitions, joint ventures and partnerships discussed herein; changes in taxation and other
laws and regulations that affect us and our securityholders; the potential failure of counterparties to honour their contractual obligations; stock market volatility and market valuations; the ability of OPEC to control production and balance global
supply and demand of crude oil at desired price levels; political uncertainty, including the risks of hostilities, in the petroleum producing regions of the world; delays in exploration and development activities if drilling and related equipment is
unavailable or if access to drilling locations is restricted; the impact of pipeline interruptions and apportionments and the actions or inactions of third party operators; the possibility that we are unable to enter into further amendments to the
agreements governing our credit facility and senior notes on the terms described herein or at all and that as a result we breach one or more of the financial covenants in such agreements and default thereunder; and the other factors described under
Risk Factors in this document and in Penn Wests public filings available in Canada at www.sedar.com and in the United States at www.sec.gov. Readers are cautioned that this list of risk factors should not be construed
as exhaustive.

The forward-looking statements contained and incorporated by reference in this document speak only as of the date of this document. Except
as expressly required by applicable securities laws, Penn West does not undertake any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. The forward-looking
statements contained and incorporated by reference in this document are expressly qualified by this cautionary statement.



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GENERAL AND ORGANIZATIONAL STRUCTURE

General

Penn West is a corporation amalgamated under the
ABCA. It operates under the trade names Penn West and Penn West Exploration. Penn Wests head and registered office is located at Suite 200, 207  9th Avenue
S.W., Calgary, Alberta, T2P 1K3.

Our Organizational Structure

The following diagram sets forth the organizational structure of Penn West and its material Subsidiaries as at the date hereof.



LOGO

Notes:



|(1) | The remaining 45% interest in Peace River Oil Partnership is owned by Winter Spark Resources, Inc., an affiliate of China Investment Corporation.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Each of the entities identified in the diagram was incorporated, continued, formed or organized, as the case may be, under the laws of the Province of Alberta.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------



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DESCRIPTION OF OUR BUSINESS

Overview

Penn West is one of the largest conventional
oil and natural gas producers in Canada. Penn West operates a significant portfolio of opportunities with a dominant position in light oil in Canada. Based in Calgary, Alberta, Penn West operates throughout western Canada on a land base encompassing
approximately4 million net acres. Penn West is a development and production company focused on profitability with goals of growing production per share, cash flow per share and strengthening its balance sheet position. We are committed
to maximizing the efficiency of our capital programs and the reliability of our production base while growing the oil and liquids weighting of our total production. As at December 31, 2015, Penn West had approximately 718 employees.

Reserves Data

See Appendices A-1, A-2 and A-3 for
complete NI 51-101 oil and gas reserves disclosure for Penn West as at December 31, 2015.

General Development of the Business

The following is a description of the general development of Penn Wests business over the last three completed financial years.

Year Ended December 31, 2013

Board, Management and Staffing Changes

The Board underwent a renewal process in May 2013 that resulted in John Brussa (Chairman), William Andrew (Vice-Chairman) and Shirley McClellan retiring
from the Board and Rick George (Chairman), Allan Markin (Vice-Chairman) and Jay Thornton joining the Board.

In June 2013, Murray Nunns (President and
Chief Executive Officer) retired from both his Board and management positions. David Roberts joined Penn West in June 2013 as President and Chief Executive Officer and was added to the Board.

In July 2013, Allan Markin (Vice-Chairman) resigned from the Board.

Penn West streamlined its management structure in July 2013 which resulted in management changes. This led to David Middleton (Executive Vice-President,
Operations Engineering and Managing Director, Peace River Oil Partnership), Bob Shepherd (Senior Vice-President, Enhanced Oil Recovery and Cordova Joint Venture) and Rob Wollmann (Senior Vice President, Exploration) leaving Penn West.

In 2013, in an effort to operate in a more efficient manner, Penn West reduced its staffing levels by over 25 percent.

Change to Quarterly Dividend Payment

In
June 2013, Penn West announced a change to its quarterly dividend payment. Effective for the 2013 third quarter dividend, Penn West reduced its quarterly dividend payment from $0.27 per Common Share to $0.14 per Common Share.

Strategic Alternatives Review

In
June 2013, the Board formed a special committee (the Special Committee) to review strategic alternatives to increase Shareholder value. In November 2013, Penn West announced that the review was complete and that the
Board, based on recommendations from management, the Special Committee and its financial advisor, had determined that Penn Wests long-term plan to deleverage its balance sheet, continue operational and cost control improvements, and focus on
light oil development integrated with waterflood programs concentrated in its Cardium, Slave Point and Viking plays was the best strategy available to maximize Shareholder value. Penn West announced that the objective of the long-term plan was
to



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provide Shareholders with compound annual per share growth in oil production and funds flow subsequent to a deleveraging period and provide Shareholders with a return through a sustainable
dividend. In furtherance of the plan, Penn West announced its intention to sell $1.5 to 2.0 billion of non-core assets in order to deleverage its balance sheet.

Aggregate Acquisition and Disposition Activity

Penn West completed non-core property dispositions, net of acquisitions, of approximately $540 million in 2013. Total production associated with the combined
divestments was approximately 11,000 boe per day. Divested assets were located primarily in the East Central, North West and Southern areas of Alberta and represented mature, base assets in Penn Wests asset portfolio which had minimal
capital allocated to them in the long-term plan. The net proceeds of the dispositions were used to repay a portion of the indebtedness outstanding under our bank credit facilities.

Year Ended December 31, 2014

Renewal of Credit Facilities

In May 2014,
Penn West renewed its unsecured, revolving credit facility with a syndicate of Canadian and international banks. Penn West chose to reduce the borrowing capacity under its renewed facility to an aggregate borrowing limit of $1.7 billion as less
credit capacity is required under Penn Wests long-term plan. The facility consists of two tranches with different maturity dates: (a) tranche one has a borrowing limit of $1.2 billion with a maturity date of May 6, 2019; and (b) tranche
two provides a $500 million borrowing limit with a maturity date of June 30, 2016.

Board and Management Changes

In 2014, the Board continued its renewal process, which resulted in Daryl H. Gilbert, Frank Potter and Jack Schanck retiring from the Board and John Brydson
joining the Board. Penn West also announced that Raymond Crossley would join the Board in late February 2015.

In March 2014, Todd Takeyasu
(Executive Vice President and Chief Financial Officer) retired from his position. In May 2014, David Dyck joined Penn West as Senior Vice President and Chief Financial Officer.

In 2014, as part of our ongoing effort to operate in a more efficient manner, Penn West reduced its staffing levels by a further 21 percent.

Internal Review of Accounting Practices and Filing of Restated Financial Statements

In July 2014, Penn West announced that it was conducting a voluntary internal review (the Review) of certain of its accounting practices
through the Audit Committee of the Board. In September 2014, Penn West announced the results of the Review and completed the restatement of certain financial statements and related managements discussion and analysis. It also
confirmed that the Audit Committees findings did not impact Penn Wests strategic direction. For further details, see Penn Wests news release dated September 18, 2014.

Long-Term Plan Update

In November 2014, Penn West
provided an update on its long term plan, which centered on reliability and deliverability of operational performance, key components of which are effective cost control and development, including integrated waterflood support concentrated in our
large, light oil resource plays. For further details, see Penn Wests news release dated November 17, 2014.



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Aggregate Acquisition and Disposition Activity

Penn West completed non-core property dispositions, net of acquisitions, of approximately $560 million in 2014. Total production associated with the combined
divestments was approximately 14,700 boe per day with production weighted approximately 60% toward natural gas. Divested assets were located primarily in the central and southwestern areas of Alberta and represented non-core, base assets in
Penn Wests asset portfolio which had minimal capital allocated to them in the long-term plan. The net proceeds of the dispositions were used to repay a portion of the indebtedness outstanding under our bank credit facilities.

Suspension of DRIP

In
December 2014, Penn West announced that commencing with its first quarter 2015 dividend, payable on April 15, 2015, the Board had suspended Penn Wests Dividend Reinvestment and Optional Common Share Purchase Plan until further
notice.

Change to Quarterly Dividend Payment

In December 2014, Penn West announced a change to its quarterly dividend payment from $0.14 per Common Share to $0.03 per Common Share, which was
subsequently further reduced to $0.01 per Common Share effective for its first quarter 2015 dividend, payable on April 15, 2015.

2015 Capital Expenditure Budget and Production and Funds Flow Guidance

In November 2014, the Company announced that it had approved a 2015 capital budget of approximately $840 million and that it anticipated 2015 average
production to be between 95,000 and 105,000 boe per day and 2015 funds flow to be between $875 and $925 million.

In December 2014, the Company
announced that in response to significant changes in the commodity price environment, and in order to maintain financial flexibility, Penn Wests capital budget had been reduced by approximately $215 million from $840 million to $625
million. The $215 million capital budget reduction reflects capital that is being deferred on longer cycle time projects, certain waterflood project capital and other non-development capital projects until the industry returns to a stable and
higher oil price environment. Much of the remaining $625 million budget would be allocated primarily toward development activities in the Cardium and Viking core light oil areas. As a result, the Companys production guidance for 2015 was
reduced to a range of 90,000 to 100,000 boe per day and the Companys funds flow guidance for 2015 was reduced to a range of $500 to $550 million.

Year Ended December 31, 2015

Board and Management Changes

Messrs.
Raymond Crossley and William Friley joined the Board on March 6, 2015 and March 12, 2015, respectively. Effective March 12, 2015, Mr. Crossley was appointed as Chair of the Audit Committee and Mr. Friley was been appointed Chair of the
Operations and Reserves Committee. In 2015, James Allard and James Smith retired from the Board.

In June 2015, Keith Luft (General Counsel and
Senior Vice President, Corporate Services) retired from his position.

In 2015, as part of our ongoing effort to operate in a more efficient manner, Penn
West reduced its staffing levels by over 35 percent.



12



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Amendments to Bank Facility and Senior Notes

In May 2015, the Company finalized amending agreements with the lenders under its syndicated bank facility and with the holders of its senior notes to,
among other things, amend its financial covenants as follows:



| |  | the maximum Senior Debt to EBITDA and Total Debt to EBITDA ratio will be less than or equal to 5:1 for the period January 1, 2015 through and including June 30, 2016, decreasing to less than or equal to 4.5:1
for the quarter ending September 30, 2016 and decreasing to less than or equal to 4:1 for the quarter ending December 31, 2016;
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | the Senior Debt to EBITDA ratio will decrease to less than or equal to 3:1 for the period from and after January 1, 2017; and
|- |  | -----------------------------------------------------------------------------------------------------------------------------



| |  | the Total Debt to EBITDA ratio will remain at less than or equal to 4:1 for all periods after September 30, 2016.
|- |  | -----------------------------------------------------------------------------------------------------------------

The Company also agreed to the following:



| |  | to temporarily grant floating charge security over all of its property in favor of the lenders and the noteholders on a pari passu basis, which security will be fully released upon the Company achieving both (i) a
Senior Debt to EBITDA ratio of 3:1 or less for four consecutive quarters, and (ii) an investment grade rating on its senior secured debt;
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | to cancel the $500 million tranche of the Companys existing $1.7 billion syndicated bank facility that was set to expire on June 30, 2016, the remaining $1.2 billion tranche of the syndicated bank facility
remains available to the Company in accordance with the terms of the agreements governing such facility;
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | to temporarily reduce its quarterly dividend commencing in the first quarter of 2015 to $0.01 per share or less until the earlier of (i) the Senior Debt to EBITDA being less than 3:1 for two consecutive quarters ending
on or after September 30, 2015, and (ii) March 30, 2017; and
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | until March 30, 2017, to use net proceeds from any asset dispositions to repay at par $650 million of the outstanding principal amounts owing to noteholders, with corresponding pro rata amounts from such asset
dispositions to be used to repay any outstanding amounts drawn under its syndicated bank facility. As at December 31, 2015, Penn West has accumulated $800 million in net proceeds from asset dispositions that it has put towards its debt
prepayments and syndicated bank facility.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

2015 Capital Expenditure Budget and Production and Funds Flow Guidance

In July 2015, the Company reduced its Canadian crude oil pricing assumption for the full year 2015 to $60.00 per barrel. Consequently, the
Company updated its funds flow from operations guidance range from $500 - $550 million to $350 - $400 million and the capital budget reduced from $625 million to $575 million.

In September 2015, the Company announced that in response to continued and further significant changes in the commodity price environment, and in order
to maintain financial flexibility, Penn Wests capital budget had been reduced by approximately $75 million to $500 million, representing capital expenditures of approximately $245 million in the second half of 2015 with the revised 2015
production guideline range to be between 86,000 to 90,000 boe per day.

In November 2015, the Company refined the range of the annual production
guidance to 85,000 to 87,000 boe per day. The capital budget for the year remained unchanged at $500 million.

Responding to the
Commodity Price Environment

In September 2015, Penn West provided an update in response to the commodity price environment which focused on
limiting capital expenditures to funds flow from operation by year-end 2015, suspending the dividend, reducing board compensation and significantly reducing the cost structure though a 35 percent workforce reduction. For further details, see
Penn Wests news release dated September 1, 2015.

Change to Quarterly Dividend Payment and NYSE  Continued Listing
Standard Notification

In September 2015, Penn West announced a change to its quarterly dividend payment from $0.01 per Common Share to no
dividend until further notice, effective after the 2015 third quarter dividend payable on October 15, 2015.

Penn West also received notification
from the NYSE in September 2015 that it had fallen below the NYSEs continued listing standard, which requires a minimum average closing price of US$1.00 over a consecutive 30 trading day period. Penn West regained compliance at the close
of trading on November 30, 2015 since the average closing price of its common stock for the consecutive 30 trading days ended November 30, 2015 and the closing price of its common stock on November 30, 2015 both exceeded US$1.00. For
further details, see Penn Wests news release dated December 2, 2015.



13



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Aggregate Acquisition and Disposition Activity

Penn West completed non-core property dispositions of $800 million in 2015. Total production associated with the combined divestments was approximately 11,500
boe per day with production weighted approximately 20% toward natural gas. Divested assets were located in Alberta, Saskatchewan and Manitoba and represented non-core, base assets in Penn Wests asset portfolio which had minimal capital
allocated to them in the long-term plan. The net proceeds of the dispositions were used to repay a portion of the indebtedness outstanding under our bank facility and senior notes, as agreed to in the amending agreements.

2016 Developments

2016 Capital
Expenditure Budget and Production

In January 2016, the Company announced its 2016 capital budget of $50 million. This capital budget was
consistent with the strategy announced on September 1, 2015, which limits our total expenditures to funds flow from operations, in response to the current weak commodity price environment. The Companys average production guidance for 2016
was also set at 60,000 to 64,000 boe per day.

NYSE  Continued Listing Standard Notification

In January 2016, Penn West received notification from the NYSE that we were no longer in compliance with one of the NYSEs continued listing
standards applicable to us because the average closing price of our Common Shares was less than US$1.00 per share over a consecutive 30 day trading period. Under the NYSEs rules, we have a period of six months from the date of the NYSE
notification to regain compliance with the NYSEs price listing standard and avoid delisting. Penn West can regain compliance if, during the applicable cure period, on the last trading day of any calendar month, Penn Wests Common Shares
have a closing price and a 30 trading day average closing price of at least U.S.$1.00 per share. In the event that at the expiration of the applicable cure period Penn West has not regained compliance, the NYSE will commence suspension and delisting
procedures.

Settlement of Class Action Lawsuit

In February 2016, Penn West announced that it entered into agreements to settle all class action proceedings in Canada and United States against the
Company related to damages alleged to have been incurred due to a decline in share price related to the restatement of certain of Penn Wests historical financial statements and related MD&A in 2014. The settlement agreements provide for a
payment of $53 million split evenly between Canadian and US investors that will be fully funded by insurance coverage maintained by Penn West. As a result, the payment will not impact the Companys cash or financial position. The proposed
settlements are subject to the satisfaction of the conditions stated in the settlement documents as well as the receipt of court approval in each of Alberta, Ontario and Quebec and in New York. There can be no assurance that these conditions
will be satisfied or that the settlements will be approved by the courts. The receipt of such court approvals is dependent on a number of factors and therefore the timing thereof cannot be predicted at this time

Board Changes

Ms. Maureen Cormier
Jackson joined the Board on March 8, 2016.

Long Term Retention and Incentive Plan becomes Restricted Share Unit Plan

In March 2016, Penn West announced that the Board had approved amendments to the Restricted Share Unit Plan (formerly the Long Term Retention and
Incentive Plan) to allow for the administrators the discretion to make payments on future grants of restricted share units (formerly incentive awards) in either cash or Common Shares.



14



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Termination of DRIP

In March 2016, Penn West announced that the Board had decided to terminate the Penn Wests Dividend Reinvestment and Optional Common Share Purchase
Plan, which had been suspended since December 2014, pursuant to the terms and conditions set forth in the plan.

Ongoing Acquisition,
Disposition, Farm-Out and Financing Activities

Potential Acquisitions

Penn West continues to evaluate potential acquisitions of all types of petroleum and natural gas and other energy-related assets as part of its ongoing asset
portfolio management program. At times, Penn West could be in the process of evaluating several potential acquisitions which individually or in the aggregate could be material. As of the date hereof, Penn West has not reached agreement on the price
or terms of any potential material acquisitions. Penn West cannot predict whether any current or future opportunities will result in one or more acquisitions for Penn West.

Potential Dispositions and Farm-Outs

Penn West continues to evaluate potential dispositions of its petroleum and natural gas assets as part of its ongoing portfolio asset management program. In
particular, Penn West has announced its intention to sell additional non-core assets.

In addition, Penn West continues to consider potential farm-out
opportunities with other industry participants in respect of its petroleum and natural gas assets in circumstances where Penn West believes it is prudent to do so based on, among other things, its capital program, development plan timelines and the
risk profile of such assets. Penn West is normally in the process of evaluating several potential dispositions of its assets and farm-out opportunities at any one time, which individually or in the aggregate could be material. As of the date hereof,
Penn West has not reached agreement on the price or terms of any potential material dispositions or farm-outs. Penn West cannot predict whether any current or future opportunities will result in one or more dispositions or farm-outs for Penn
West.

Potential Financings

Penn West
continuously evaluates its capital structure, liquidity and capital resources, and financing opportunities that arise from time to time. Penn West may in the future complete financings of Common Shares or debt (including debt which may be
convertible into Common Shares) for purposes that may include the financing of acquisitions, the financing of Penn Wests operations and capital expenditures, and the repayment of indebtedness. As of the date hereof, Penn West has not
reached agreement on the pricing or terms of any potential material financing. Penn West cannot predict whether any current or future financing opportunity will result in one or more material financings being completed.

Significant Acquisitions

Penn West did not complete an
acquisition during its most recently completed financial year that was a significant acquisition for the purposes of Part 8 of National Instrument 51-102.

CAPITALIZATION OF PENN WEST

Share
Capital

The authorized capital of Penn West consists of an unlimited number of Common Shares without nominal or par value and 90,000,000 preferred
shares without nominal or par value. A description of the share capital of Penn West is set forth below. This description is a summary only. Shareholders are encouraged to read the full text of such share provisions, which are available on
SEDAR at www.sedar.com.



15



---

Common Shares

Shareholders are entitled to notice of, to attend and to one vote per Common Share held at any meeting of the shareholders of Penn West (other than meetings of
a class or series of shares of Penn West other than the Common Shares).

Shareholders are entitled to receive dividends as and when declared by the Board
of Directors on the Common Shares as a class, subject to prior satisfaction of all preferential rights to dividends attached to shares of other classes of shares of Penn West ranking in priority to the Common Shares in respect of dividends.

The holders of Common Shares are entitled in the event of any liquidation, dissolution or winding-up of Penn West, whether voluntary or involuntary, or any
other distribution of the assets of Penn West among its Shareholders for the purpose of winding-up its affairs, and subject to prior satisfaction of all preferential rights to return of capital on dissolution attached to all shares of other classes
of shares of Penn West ranking in priority to the Common Shares in respect of return of capital on dissolution, to share rateably, together with the holders of shares of any other class of shares of Penn West ranking equally with the Common Shares
in respect of return of capital on dissolution, in such assets of Penn West as are available for distribution.

As at March 9, 2016, 502,163,163Common Shares were issued and outstanding.

Preferred Shares

Preferred shares of Penn West may at any time or from time to time be issued in one or more series. Before any shares of a particular series are issued,
the Board shall, by resolution, fix the number of shares that will form such series and shall, subject to the limitations set out in Penn Wests articles, by resolution fix the designation, rights, privileges, restrictions and conditions to be
attached to the preferred shares of such series, including, but without in any way limiting or restricting the generality of the foregoing, the rate, amount or method of calculation of dividends thereon, the time and place of payment of dividends,
the consideration for and the terms and conditions of any purchase for cancellation, retraction or redemption thereof, conversion or exchange rights (if any), and whether into or for securities of Penn West or otherwise, voting rights attached
thereto (if any), the terms and conditions of any share purchase or retirement plan or sinking fund, and restrictions on the payment of dividends on any shares other than preferred shares or payment in respect of capital on any shares in the capital
of Penn West or creation or issue of debt or equity securities; the whole subject to filing of Articles of Amendment setting forth a description of such series, including the designation, rights, privileges, restrictions and conditions attached to
the shares of such series. Notwithstanding the foregoing, other than in the case of a failure to declare or pay dividends specified in any series of preferred shares, the voting rights attached to the preferred shares shall be limited to one
vote per preferred share at any meeting where the preferred shares and Common Shares vote together as a single class.

As at the date hereof, no preferred
shares are issued and outstanding.

Debt Capital

Penn West has issued the Senior Notes and has a syndicated credit facility. A description of the debt capital of Penn West is set forth below. This
description is a summary only. Shareholders are encouraged to read the full text of the agreements governing Penn Wests Senior Notes and credit facility, which are available on SEDAR at www.sedar.com.



16



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Senior Notes

Penn West has issued the Senior Notes, which consist of US$937 million principal amount of notes, Cdn$73 million principal amount of notes, £49 million
principal amount of notes and 6 million principal amount of notes. The Senior Notes are guaranteed by Penn Wests material subsidiaries, are secured and rank equally with our bank credit facilities.The following is a brief
summary of certain of the material terms of each series of our Senior Notes.



|          |  |                            |             |     |                  |  |       |            |  |                                     |  |                  
|--------- |  | -------------------------- | ----------- | --- | ---------------- |  | ----- | ---------- |  | ----------------------------------- |  | -----------------
|Series    |  | Currency / PrincipalAmount |             |     | Interest Rate(1) |  |       | Issue Date |  | Maturity Date                      
|Series B  |  | US$                        | 98 million  |     |                  |  | 7.30  | %          |  | May 31, 2007                        |  | May 31, 2017     
|Series C  |  | US$                        | 85 million  |     |                  |  | 7.40  | %          |  | May 31, 2007                        |  | May 31, 2019     
|Series D  |  | US$                        | 10 million  |     |                  |  | 7.55  | %          |  | May 31, 2007                        |  | May 31, 2022     
|Series E  |  | US$                        | 118 million |     |                  |  | 7.62  | %          |  | May 29, 2008                        |  | May 29, 2016     
|Series F  |  | US$                        | 180 million |     |                  |  | 7.80  | %          |  | May 29, 2008                        |  | May 29, 2018     
|Series G  |  | US$                        | 36 million  |     |                  |  | 7.90  | %          |  | May 29, 2008                        |  | May 29, 2020     
|Series H  |  | Cdn$                       | 30 million  |     |                  |  | 7.66  | %          |  | May 29, 2008                        |  | May 29, 2018     
|Series I  |  | £                          | 35 million  | (2) |                  |  | 6.95  | %(2)       |  | July 31, 2008                       |  | July 31, 2018    
|Series K  |  | US$                        | 18 million  |     |                  |  | 10.39 | %          |  | May 5, 2009                         |  | May 5, 2016      
|Series L  |  | US$                        | 32 million  |     |                  |  | 10.82 | %          |  | May 5, 2009                         |  | May 5, 2019      
|Series M  |  | US$                        | 15 million  |     |                  |  | 10.39 | %          |  | May 5, 2009                         |  | May 5, 2019(3)   
|Series N  |  | £                          | 14 million  | (4) |                  |  | 9.15  | %(4)       |  | May 5, 2009                         |  | May 5, 2019      
|Series O  |  |                           | 6 million   | (5) |                  |  | 9.22  | %(5)       |  | May 5, 2009                         |  | May 5, 2019      
|Series R  |  | US$                        | 51 million  |     |                  |  | 6.79  | %          |  | March 16, 2010                      |  | March 16, 2017   
|Series S  |  | US$                        | 74 million  |     |                  |  | 7.35  | %          |  | March 16, 2010                      |  | March 16, 2020   
|Series T  |  | US$                        | 13 million  |     |                  |  | 7.45  | %          |  | March 16, 2010                      |  | March 16, 2022   
|Series U  |  | US$                        | 10 million  |     |                  |  | 7.60  | %          |  | March 16, 2010                      |  | March 16, 2025   
|Series W  |  | US$                        | 18 million  |     |                  |  | 5.67  | %          |  | December 2, 2010                    |  | December 2, 2017 
|Series X  |  | US$                        | 60 million  |     |                  |  | 6.38  | %          |  | December 2, 2010 andJanuary 4, 2011 |  | December 2, 2020 
|Series Y  |  | US$                        | 18 million  |     |                  |  | 6.48  | %          |  | December 2, 2010                    |  | December 2, 2022 
|Series Z  |  | US$                        | 25 million  |     |                  |  | 6.73  | %          |  | December 2, 2010 andJanuary 4, 2011 |  | December 2, 2025 
|Series BB |  | Cdn$                       | 27 million  |     |                  |  | 6.88  | %          |  | December 2, 2010                    |  | December 2, 2020 
|Series CC |  | US$                        | 20 million  |     |                  |  | 5.14  | %          |  | November 30, 2011                   |  | November 30, 2016
|Series DD |  | US$                        | 3 million   |     |                  |  | 5.73  | %          |  | November 30, 2011                   |  | November 30, 2018
|Series EE |  | US$                        | 53 million  |     |                  |  | 6.29  | %          |  | November 30, 2011                   |  | November 30, 2021
|Series FF |  | Cdn$                       | 16 million  |     |                  |  | 6.13  | %          |  | November 30, 2011                   |  | November 30, 2018



17



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Notes:



|(1) | Interest rate per note can fluctuate based on consolidated debt to EBITDA ratio which expires on March 30, 2017, the date the covenant relief period ends with the bank syndicate and noteholders.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Penn West has entered into contracts to fix the interest rate of the Series I Senior Notes at 6.95% in Canadian dollars and to fix the exchange rate on repayment.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Penn West is obligated to repay US$5 million of the total US$25 million principal amount of the Series M notes outstanding on May 5 of each year ending in 2019.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Penn West has entered into contracts to fix the interest rate of the Series N Senior Notes at 9.15% and to fix the exchange rate on repayment.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------

|(5) | Penn West has entered into contracts to fix the interest rate of the Series O Senior Notes at 9.22% and to fix the exchange rate on repayment.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------

Credit Facility

Penn West has a secured,
revolving credit facility with a syndicate of Canadian and international banks. The credit facility currently has an aggregate borrowing limit of $1.2 billion and an extendible five-year term (May 6, 2019 maturity date).

Additional Information

Effective May 22,
2015, the Company reached agreements with the lenders under its syndicated bank facility and with the holders of its Senior Notes to, among other things, amend the financial covenants in the bank facility and Senior Notes. As a result, the $500
million tranche of the Companys $1.7 billion revolving, syndicated bank facility that was set to expire on June 30, 2016 was cancelled.

For
additional information regarding our Senior Notes and our credit facility, see Description of Our Business  General Development of the Business  2015 Developments in this Annual Information Form, Notes 9 and 18 to our
audited consolidated financial statements for the year ended December 31, 2015 (collectively, the Financial Statement Disclosure), and Financing and Liquidity and Capital Resources in our related
MD&A (collectively, the MD&A Disclosure), both of which are available on SEDAR at www.sedar.com. The Financial Statement Disclosure and the MD&A Disclosure and are both incorporated by reference into this
Annual Information Form.

DIRECTORS AND EXECUTIVE OFFICERS OF PENN WEST

The following table sets forth, as at March 9, 2016, the name, province and country of residence and positions and offices held for each of the directors and
executive officers of Penn West, together with their principal occupations during the last five years. The directors of Penn West will hold office until the next annual meeting of Shareholders or until their respective successors have been duly
elected or appointed.



|                                         |  |                                           |  |                                                                                                                     
|---------------------------------------- |  | ----------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------
|Name, Province and Country
of Residence  |  | Positions and Offices Held with
Penn West |  | Principal Occupations
during the Five Preceding Years                                                               
|                                         |  |                                          
|George H. Brookman(2)(4)
Alberta, Canada |  | Director since August 3, 2005             |  | Chief Executive Officer of West Canadian Industries Group Inc. (a digital printing and document management company).



18



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|                                              |  |                                                      |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|--------------------------------------------- |  | ---------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Name, Province and Country
of Residence       |  | Positions and Offices Held with
Penn West            |  | Principal Occupations
during the Five Preceding Years                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                                              |  |                                                     
|John Brydson(1)(3)
Connecticut, United States |  | Director since June 4, 2014                          |  | Private investor since 2012. From 2010 until the end of 2012, Chairman of Hestan Consulting Group, a full-service management consulting firm that he founded. Prior thereto, a Managing Director with Credit Suisse First Boston (now
Credit Suisse).                                                                                                                                                                                                                                                                                                                                              
|                                              |  |                                                     
|Raymond Crossley(1)(4)
Alberta, Canada        |  | Director since March 6, 2015                         |  | Partner with PricewaterhouseCoopers LLP since 1996 where he served as the Managing Partner, Western Canada, from 2011 to 2013. Currently a director of Pure Technologies Ltd. and the Canada West Foundation.                                                                                                                                                                                                                                                                                                                                                                                      
|                                              |  |                                                     
|Gillian H. Denham(4)
Ontario, Canada          |  | Director since June 13, 2012                         |  | Corporate director. On the Board of Directors of Morneau Shepell Inc., National Bank of Canada and Markit Group Holdings Limited. Held senior positions at Canadian Imperial Bank of Commerce from 1983 to 2005. She
holds an Honours Business Administration degree from University of Western Ontario School of Business and an MBA from Harvard Business School.                                                                                                                                                                                                                                
|                                              |  |                                                     
|William A. Friley(2)(3)
Alberta, Canada       |  | Director since March 12, 2015                        |  | President and CEO of Telluride Oil and Gas Ltd. and Skyeland Oils Ltd. On the board of directors of: OSUM Oil Sands Corp., Titan Energy Services, and Advanced Flow Technologies. Also, on the Alberta Region board of the Nature
Conservancy of Canada.                                                                                                                                                                                                                                                                                                                                           
|                                              |  |                                                     
|Richard L. George(3)
Alberta, Canada          |  | Chairman of the Board and director since May 3, 2013 |  | Partner of Novo Investment Group Ltd. (a Calgary-based investment management company) (Novo). Chief Executive Officer of Suncor Energy Inc. (Suncor) (an integrated energy company) prior to
May 2012 and President and Chief Executive Officer of Suncor prior to December 2011.                                                                                                                                                                                                                                                                                                              
|                                              |  |                                                     
|Maureen Cormier Jackson Alberta,
Canada       |  | Director since March 8, 2016                         |  | Former Senior Vice President, Chief Process and Information Officer at Suncor, from 2011 to 2013, with a broad range of experiences including Environment Health & Safety, Finance, Major Projects, Business Development and Energy
Management in her 30 year career. Currently on the Deans Advisory Board of Dean of Medicine and the University of Calgary and previous director of various private companies. She holds a Bachelor of Commerce, Memorial University, St.
Johns, a Chartered Professional Accountant (CPA, CGA) and an Institute of Corporate Directors certification (ICD.D).



19



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|                                        |  |                                                                     |  |                                                                                                                                                                                                                                                                                                                                                                                                                       
|--------------------------------------- |  | ------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Name, Province and Country
of Residence |  | Positions and Offices Held with
Penn West                           |  | Principal Occupations
during the Five Preceding Years                                                                                                                                                                                                                                                                                                                                                                 
|                                        |  |                                                                    
|David E. Roberts Alberta, Canada        |  | Director, President and Chief Executive Officer since June 19, 2013 |  | President and Chief Executive Officer of Penn West since June 2013. Prior thereto, Executive Vice-President and Chief Operating Officer of Marathon Oil Corporation (Marathon) (an independent energy
company) from July 2011 to December 2012. Executive Vice-President Upstream of Marathon from April 2008 to July 2011.                                                                                         
|                                        |  |                                                                    
|Jay W. Thornton(1)(2)
Alberta, Canada   |  | Director since June 5, 2013                                         |  | Partner of Novo. Prior thereto, various operating and corporate executive positions with Suncor.                                                                                                                                                                                                                                                                                                                      
|                                        |  |                                                                    
|David A. Dyck Alberta, Canada           |  | Senior Vice President and Chief Financial Officer                   |  | Senior Vice President and Chief Financial Officer of Penn West since May 2014. Prior thereto, Chief Financial Officer at Synergia Polygen Ltd. from September 2012 until he joined Penn West. Prior thereto,
President and Chief Operating Officer of Ivanhoe Energy Inc. from May 2010 to August 2012. Prior thereto, Executive Vice President, Capital Markets at Ivanhoe Energy Inc. from October 2009 to May 2010.
|                                        |  |                                                                    
|Gregg Gegunde Alberta, Canada           |  | Senior Vice President, Exploitation, Production and Delivery        |  | Senior Vice President, Exploitation, Production and Delivery of Penn West since May 2014. Prior thereto, Senior Vice President, Production and Delivery of Penn West since June 2013. Prior thereto, Vice President,
Production of Penn West since February 2012. Prior thereto, various Vice President roles in the development and production engineering areas with Penn West.                                     

Notes:



|(1) | Member of the Audit Committee.
|--- | ------------------------------

|(2) | Member of the Human Resources and Compensation Committee.
|--- | ---------------------------------------------------------

|(3) | Member of the Operations and Reserves Committee.
|--- | ------------------------------------------------

|(4) | Member of the Governance Committee.
|--- | -----------------------------------

As at the date hereof, the directors and executive officers of Penn West,
as a group, beneficially owned, or controlled or directed, directly or indirectly, approximately 3.0 million Common Shares, or less than one percent of the issued and outstanding Common Shares.

Cease Trade Orders, Bankruptcies, Penalties or Sanctions

To the knowledge of Penn West, except as otherwise set forth herein, no director or executive officer of Penn West (nor any personal holding company of any of
such persons) is, as of the date of this Annual Information Form, or was within ten years before the date of this Annual Information Form, a director, Chief Executive Officer or Chief Financial Officer of any company (including Penn West), that:



| | (a) | was subject to a cease trade order (including a management cease trade order), an order similar to a cease trade order or an order that denied the relevant company access to any exemption under securities legislation,
in each case that was in effect for a period of more than 30 consecutive days (collectively, an Order) that was issued while the director or executive officer was acting in the capacity as director, Chief Executive Officer or
Chief Financial Officer; or
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | was subject to an Order that was issued after the director or executive officer ceased to be a director, Chief Executive Officer or Chief Financial Officer and which resulted from an event that occurred while that
person was acting in the capacity as director, Chief Executive Officer or Chief Financial Officer.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



20



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On July 29, 2014, Penn West announced that the Audit Committee of the Board was conducting a voluntary,
internal review of certain of the Companys accounting practices and that certain of the Companys historical financial statements and related MD&A must be restated, which might result in the release of its second quarter 2014
financial results being delayed (which ultimately proved to be the case). Furthermore, the Company advised that its historical financial statements and related audit reports and MD&A should not be relied on. As a result, the Alberta
Securities Commission issued a Management Cease Trade Order on August 5, 2014 (the ASC MCTO) against Messrs. Roberts, Dyck, Gegunde, George, Brookman, Brydson, and Thornton and Ms. Denham. The Ontario Securities Commission
issued a Temporary Management Cease Trade Order on August 8, 2014 and a Permanent Management Cease Trade Order on August 20, 2014 (the OSC MCTO), in each case against Ms. Denham (the only one of the aforementioned individuals
who was resident in Ontario). On September 18, 2014, Penn West filed restated audited annual financial statements for the years ended December 31, 2013 and 2012, restated unaudited interim financial statements for the three months
ended March 31, 2014 and 2013, restated MD&A for the year ended December 31, 2013 and the quarter ended March 31, 2014, and related amended documents. Penn West also filed its unaudited interim financial statements for the
three and six month periods ended June 30, 2014 and 2013 and the related MD&A and management certifications. The ASC MCTO and the OSC MCTO were each revoked on September 23, 2014.

To the knowledge of Penn West, no director or executive officer of Penn West or shareholder holding a sufficient number of securities of Penn West to affect
materially the control of Penn West (nor any personal holding company of any of such persons):



| | (a) | is, as of the date of this Annual Information Form, or has been within the ten years before the date of this Annual Information Form, a director or executive officer of any company (including Penn West) that, while that
person was acting in that capacity, or within a year of that person ceasing to act in that capacity, became bankrupt, made a proposal under any legislation relating to bankruptcy or insolvency or was subject to or instituted any proceedings,
arrangement or compromise with creditors or had a receiver, receiver manager or trustee appointed to hold its assets; or
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | has, within the ten years before the date of this Annual Information Form, become bankrupt, made a proposal under any legislation relating to bankruptcy or insolvency, or become subject to or instituted any proceedings,
arrangement or compromise with creditors, or had a receiver, receiver manager or trustee appointed to hold the assets of the director, executive officer or shareholder.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

To the knowledge of Penn West, no director or executive officer of Penn West or shareholder holding a sufficient number of securities of Penn West to affect
materially the control of Penn West (nor any personal holding company of any of such persons), has been subject to:



| | (a) | any penalties or sanctions imposed by a court relating to securities legislation or by a securities regulatory authority or has entered into a settlement agreement with a securities regulatory authority; or
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | any other penalties or sanctions imposed by a court or regulatory body that would likely be considered important to a reasonable investor in making an investment decision;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------

provided that for the purposes of the foregoing, a late filing fee, such as a filing fee that applies to the late filing of an insider report, is not
considered to be a penalty or sanction.

Conflicts of Interest

The Board of Directors approved an amendment to the Code of Business Conduct and Ethics (the Code) in July of 2015 which made the Code the
applicable policy in regards to conflicts of interest (whereas previously there was also the Code of Ethics for Directors, Officers and Senior Financial Management). In general, the private investment activities of employees, directors and officers
are not prohibited; however, should an existing investment pose a potential conflict of interest, the potential conflict is required by the Code to be disclosed to an officer or a member of Penn Wests legal department or to the



21



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Board of Directors. Any other activities posing a potential conflict of interest are also required by the Code to be disclosed to an officer or to a member of Penn Wests legal
department. Any such potential conflicts of interests will be dealt with openly with full disclosure of the nature and extent of the potential conflicts of interests with Penn West.

It is acknowledged in the Code that the directors may be directors or officers of other entities engaged in the oil and gas business, and that such entities
may compete directly or indirectly with Penn West. Passive investments in public or private entities of less than one per cent of the outstanding shares will not be viewed as competing with Penn West. No executive officer or
employee of Penn West should be a director, employee, contractor, consultant or officer of any entity that is or may be in competition with Penn West unless expressly authorized by an executive officer or the Board of Directors. Any director of
Penn West who is a director or officer of, or who is otherwise actively engaged in the management of, or who owns an investment of one per cent or more of the outstanding shares, in public or private entities shall disclose such holding to the Board
of Directors. In the event that any circumstance should arise as a result of such positions or investments being held or otherwise which in the opinion of the Board of Directors constitutes a conflict of interest which reasonably affects such
persons ability to act with a view to the best interests of Penn West, the Board of Directors will take such actions as are reasonably required to resolve such matters with a view to the best interests of Penn West. Such actions, without
limitation, may include excluding such directors, officers or employees from certain information or activities of Penn West.

The ABCA provides that in the
event that an officer or director is a party to, or is a director or an officer of, or has a material interest in any person who is a party to, a material contract or material transaction or proposed material contract or proposed material
transaction, such officer or director shall disclose the nature and extent of his or her interest and shall refrain from voting to approve such contract or transaction.

As of the date hereof, Penn West is not aware of any existing or potential material conflicts of interest between Penn West or a Subsidiary of Penn West and
any director or officer of Penn West or of any Subsidiary of Penn West.

Promoters

No person or company has been, within the two most recently completed financial years or during the current financial year, a promoter (as defined
in the Securities Act (Ontario)) of Penn West or of a Subsidiary of Penn West.

AUDIT COMMITTEE DISCLOSURES

National Instrument 52-110 Audit Committees (NI 52-110) relating to audit committees has mandated certain disclosures for inclusion in this
Annual Information Form. The text of the Audit Committees mandate is attached as Appendix B to this Annual Information Form.

Composition of the Audit Committee and Relevant Education and Experience

As of the date hereof, the members of the Audit Committee are Raymond Crossley (Chairman), John Brydson, and Jay W. Thornton, each of whom is independent and
financially literate within the meaning of NI 52-110. The following comprises a brief summary of each members education and experience that is relevant to the performance of his or her responsibilities as an Audit Committee
member.

John Brydson

Mr. Brydson has over 30
years of experience in the financial sector and has occupied senior roles in both major investment and commercial banks. Since 2012, Mr. Brydson has been a private investor. From 2010 until the end of 2012, he was Chairman of a small full-service
management consulting firm, Hestan Consulting Group (HCG), which he founded. Prior to HCG, Mr. Brydson was a Managing Director with Credit Suisse First Boston, now Credit Suisse (CS), from 1995 until 2009, where
he was in charge of the Multi-Product Event Trading group. He was also a Managing Director with Lehman Brothers in a similar function from 1983 until he joined CS. The early years of his career were spent as an equity analyst before joining Chase
Manhattan Bank (Chase) in London in 1977. He transferred to the head office in New York in 1980 where he became a Vice President in the Project Finance Group, specializing in international projects in the energy, mining and metals
sectors. He left Chase to join Lehman Brothers in 1983. Mr. Brydson holds an Honors Degree in Economics from Heriot-Watt University in Edinburgh, Scotland. Mr. Brydson served over 10 years as the President and a Board Member of The American Friends
of Heriot-Watt University, a charitable organization, and remains on its Board.



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Raymond Crossley (Chairman)

Mr. Crossley is a corporate director. He serves as chair of the audit committee of Pure Technologies Ltd. Mr. Crossley has served as a member of the Financial
Review Committee of the Alberta Securities Commission (ASC) and has been a member of the Financial Advisory Committee of the ASC. Mr. Crossley retired in 2015 from the accounting firm of PricewaterhouseCoopers
(PwC) after serving for more than 33 years. He joined the firm in 1981 and had been a partner since 1996, working with a number of large publicly traded corporations operating in the natural resource and utilities sectors. Mr.
Crossley served as an elected member of the Partnership Board (PwCs governing body), from 2001-2005. From 2005-2011, Mr. Crossley was the Managing Partner of PwCs Calgary office. From 2011-2013 Mr. Crossley acted as Managing Partner,
Western Canada. Mr. Crossley is a member of the Chartered Professional Accountants of Alberta. He graduated from the University of Western Ontario with a degree in Economics and Political Science.

Jay W. Thornton

Mr. Thornton is a partner of Novo
Investment Group Ltd., a Calgary-based investment management company. Mr. Thornton has over 27 years of oil and gas experience. He spent the first part of his career in various management positions with Shell. From 2000 to 2012, he held various
operating and corporate executive positions with Suncor. He spent four years in Fort McMurray at Suncors oil sands mining operations. His most recent position with Suncor was Executive Vice-President of Supply, Trading and Development. He has
held previous board positions with both the Canadian Association of Petroleum Producers (CAPP) and the Canadian Petroleum Products Institute (CPPI). He was a past board member of the YMCA Fort McMurray and is currently a member of the board of North
American Energy Partners Inc. Mr. Thornton is a graduate of McMaster University with an Honours degree in Economics. He is also a graduate of the Institute of Corporate Directors (ICD) Directors Education Program.

Pre-Approval Policies and Procedures for Audit and Non-Audit Services

The terms of the engagement of Penn Wests external auditors to provide audit services, including the budgeted fees for such audit services and the
representations and disclaimer relating thereto, must be pre-approved by the entire Audit Committee.

With respect to any engagements of Penn Wests
external auditors for non-audit services, Penn West must obtain the approval of the Audit Committee or the Chairman of the Audit Committee prior to retaining the external auditors to complete such engagement. If such pre-approval is provided by
the Chairman of the Audit Committee, the Chairman must report to the Audit Committee on any non-audit service engagement pre-approved by him at the Audit Committees first scheduled meeting following such pre-approval.

If, after using its reasonable best efforts, Penn West is unable to contact the Chairman of the Audit Committee on a timely basis to obtain the pre-approval
contemplated by the preceding paragraph, Penn West may obtain the required pre-approval from any other member of the Audit Committee, provided that any such Audit Committee member shall report to the Audit Committee on any non-audit service
engagement pre-approved by him or her at the Audit Committees first scheduled meeting following such pre-approval.

External Auditor Service Fees

The following table summarizes the fees billed to Penn West by KPMG LLP (for 2014) and Ernst & Young (for 2015) for external audit and other
services during the periods indicated.



|     |  |                  |           |  |                          |  |        |                |  |  |                      |  |  |  |   | 
|---- |  | ---------------- | --------- |  | ------------------------ |  | ------ | -------------- |  |  | -------------------- |  |  |  | - | 
|Year |  | Audit Fees(1)($) |           |  | Audit-Related Fees(2)($) |  |        | Tax Fees(3)($) |  |  | All Other Fees(4)($) | 
|2015 |  |                  | 900,000   |  |                          |  | 35,000 |                |  |  | 6,000                |  |  |  |  | 
|2014 |  |                  | 1,746,200 |  |                          |  | 84,400 |                |  |  |                     |  |  |  |  | 



23



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Notes:



|(1) | The aggregate fees billed by our external auditor in each of the last two fiscal years for audit services, including fees for the integrated audit of Penn Wests annual financial statements or services that are
normally provided in connection with statutory and regulatory filings or engagements, reviews in connection with acquisitions and Sarbanes-Oxley Act related services, long-form comfort letters related to the public offering of securities and review
procedures on the unaudited interim consolidated financial statements. In 2014, amounts included audit fees related to the restatement of prior years financial statements.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | The aggregate fees billed in each of the last two fiscal years by our external auditor for assurance and related services that are reasonably related to the performance of the audit or review of our financial statements
(and not included in audit services fees in note (1)). The services comprising the fees disclosed under this category principally consisted of Penn Wests portion of fees for the Peace River Oil Partnership audit and French translation services
in 2014.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | The aggregate fees billed in the applicable fiscal year by our external auditor for professional services for tax compliance, tax advice and tax planning.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | The aggregate fees billed in the applicable fiscal year by our external auditor for products and services other than the services described in notes (1), (2) and (3).
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

Reliance on Exemptions

At no time since the commencement
of Penn Wests most recently completed financial year has Penn West relied on any of the exemptions contained in Sections 2.4, 3.2, 3.4 or 3.5 of NI 52-110, or an exemption from NI 52-110, in whole or in part, granted under Part 8 thereof. In addition, at no time since the commencement of Penn Wests most recently completed financial year has Penn West relied upon the exemptions
in Subsection 3.3(2) or Section 3.6 of NI 52-110. Furthermore, at no time since the commencement of Penn Wests most recently completed financial year has Penn West relied upon
Section 3.8 of NI 52-110.

Audit Committee Oversight

At no time since the commencement of Penn Wests most recently completed financial year has a recommendation of the Audit Committee to nominate or
compensate an external auditor not been adopted by the Board of Directors.

DIVIDENDS AND DIVIDEND POLICY

Dividend Policy

In September 2015, the Board of
Directors adopted a no dividend policy (effective after the 2015 third quarter payment of $0.01 per Common Share on October 15, 2015) until further notice.

The amount of future cash dividends, if any, will be subject to the discretion of the Board and may vary depending on a variety of factors and conditions
existing from time to time, including fluctuations in commodity prices, production levels, capital expenditure requirements, debt service requirements, operating costs, royalty burdens, foreign exchange rates, compliance with any restrictions on the
declaration and payment of dividends contained in any agreement to which Penn West is a party from time to time (including, without limitation, the agreements governing Penn Wests credit facilities and Senior Notes), and the satisfaction of
liquidity and solvency tests imposed by the ABCA for the declaration and payment of dividends.

The Board intends to review Penn Wests dividend
policy on a quarterly basis. Depending on the foregoing factors and any other factors that the Board deems relevant from time to time, many of which are beyond the control of our Board and management team, the Board may change our dividend policy
following any such quarterly review or at any other time that the Board deems appropriate.See Risk Factors.

The credit agreement
governing our syndicated credit facility and each of the note purchase agreements governing our Senior Notes also contain provisions which restrict our ability to pay dividends to Shareholders in the event of the occurrence of certain events of
default. The full text of the agreements governing our credit facility and our Senior Notes is available on SEDAR at www.sedar.com. For additional information regarding our credit facility and our Senior Notes, see
Capitalization of Penn West  Debt Capital.



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Dividend Reinvestment and Optional Common Share Purchase Plan

Penn West had a Dividend Reinvestment and Optional Common Share Purchase Plan (the DRIP) that historically provided eligible Shareholders
with the opportunity to acquire additional Common Shares by reinvesting their dividends. At the Companys discretion, Common Shares were acquired with dividends either on the TSX at prevailing market rates or from treasury at 95% of the
average market price (as defined in the DRIP).

Eligible Shareholders could also make optional cash payments of a minimum of $500 up to a
maximum of $15,000 per quarterto purchase additional Common Shares. Common Shares purchased with optional cash payments were acquired either on the TSX at prevailing market rates or from treasury at the average market price (without a
discount).

Shareholders who were residents of Canada were eligible to participate in the dividend reinvestment component of the DRIP and to purchase new
Common Shares with optional cash payments. Shareholders who were resident in the United States were eligible to participate in the dividend reinvestment component of the DRIP. United States residents were not eligible to make optional cash
payments to purchase additional Common Shares pursuant to the DRIP. With the exception of the foregoing, Shareholders who were not residents of Canada were not entitled to participate, directly or indirectly, in the DRIP.

In December 2014, Penn West announced that commencing with its first quarter 2015 dividend, payable on April 15, 2015, the Board had suspended the
DRIP until further notice. Shareholders who had elected to participate in the DRIP received cash dividends on the payment date. On March 9, 2016, Penn West announced that the Board had decided to terminate the DRIP pursuant to the terms and
conditions set forth in the plan.

Dividends Declared Payable to Shareholders of Penn West

During the financial years ended December 31, 2013, 2014 and 2015, Penn West declared payable the following amount of cash dividends per Common Share:



|               |  |                                   |      |  |                                   |  |      |                                   |  |  |      | 
|-------------- |  | --------------------------------- | ---- |  | --------------------------------- |  | ---- | --------------------------------- |  |  | ---- | 
|Quarter        |  | 2015 DividendsDeclared Payable($) |      |  | 2014 DividendsDeclared Payable($) |  |      | 2013 DividendsDeclared Payable($) | 
|First Quarter  |  |                                   | 0.01 |  |                                   |  | 0.14 |                                   |  |  | 0.27 | 
|Second Quarter |  |                                   | 0.01 |  |                                   |  | 0.14 |                                   |  |  | 0.27 | 
|Third Quarter  |  |                                   | 0.01 |  |                                   |  | 0.14 |                                   |  |  | 0.14 | 
|Fourth Quarter |  |                                   | 0.00 |  |                                   |  | 0.14 |                                   |  |  | 0.14 | 
|               |  |                                   |      |  |                                   |  |      |                                   |  |  |      | 
|Total          |  |                                   | 0.03 |  |                                   |  | 0.56 |                                   |  |  | 0.82 | 

In September 2015, Penn West announced a change to its quarterly dividend payment from $0.01 per Common Share to no
dividend per Common Share (effective after the 2015 third quarter payment of $0.01 per Common Share on October 15, 2015) until further notice.



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MARKET FOR SECURITIES

Trading Price and Volume

The following tables set forth
certain trading information for the Common Shares in 2015 as reported by the TSX and the NYSE.



|          |  |                           |      |  |                          |   |      |        |  |  |             | 
|--------- |  | ------------------------- | ---- |  | ------------------------ | - | ---- | ------ |  |  | ----------- | 
|          |  | TSX                       |     
|Period    |  | Common Shareprice ($)High |      |  | Common Shareprice ($)Low |   |      | Volume | 
|          |  |                           |     
|January   |  | $                         | 2.48 |  |                          | $ | 1.78 |        |  |  | 138,925,362 | 
|February  |  | $                         | 3.32 |  |                          | $ | 2.14 |        |  |  | 181,041,870 | 
|March     |  | $                         | 2.42 |  |                          | $ | 1.76 |        |  |  | 123,057,471 | 
|April     |  | $                         | 3.04 |  |                          | $ | 2.15 |        |  |  | 94,505,018  | 
|May       |  | $                         | 2.95 |  |                          | $ | 2.30 |        |  |  | 70,538,317  | 
|June      |  | $                         | 2.62 |  |                          | $ | 2.15 |        |  |  | 61,172,743  | 
|July      |  | $                         | 2.14 |  |                          | $ | 1.53 |        |  |  | 62,356,553  | 
|August    |  | $                         | 1.70 |  |                          | $ | 0.77 |        |  |  | 93,009,356  | 
|September |  | $                         | 0.90 |  |                          | $ | 0.61 |        |  |  | 95,961,812  | 
|October   |  | $                         | 1.64 |  |                          | $ | 0.67 |        |  |  | 177,644,986 | 
|November  |  | $                         | 1.99 |  |                          | $ | 1.31 |        |  |  | 116,898,896 | 
|December  |  | $                         | 1.43 |  |                          | $ | 1.06 |        |  |  | 109,705,818 | 



|          |  |                             |      |  |                            |   |      |        |  |  |             | 
|--------- |  | --------------------------- | ---- |  | -------------------------- | - | ---- | ------ |  |  | ----------- | 
|          |  | NYSE                        |     
|Period    |  | Common Shareprice ($US)High |      |  | Common Shareprice ($US)Low |   |      | Volume | 
|          |  |                             |     
|January   |  | $                           | 2.10 |  |                            | $ | 1.44 |        |  |  | 102,012,035 | 
|February  |  | $                           | 2.67 |  |                            | $ | 1.69 |        |  |  | 144,204,236 | 
|March     |  | $                           | 1.95 |  |                            | $ | 1.37 |        |  |  | 108,342,739 | 
|April     |  | $                           | 2.48 |  |                            | $ | 1.68 |        |  |  | 86,087,630  | 
|May       |  | $                           | 2.43 |  |                            | $ | 1.89 |        |  |  | 62,675,734  | 
|June      |  | $                           | 2.11 |  |                            | $ | 1.73 |        |  |  | 47,137,290  | 
|July      |  | $                           | 1.73 |  |                            | $ | 1.17 |        |  |  | 55,278,581  | 
|August    |  | $                           | 1.28 |  |                            | $ | 0.60 |        |  |  | 67,916,352  | 
|September |  | $                           | 0.67 |  |                            | $ | 0.45 |        |  |  | 58,876,194  | 
|October   |  | $                           | 1.25 |  |                            | $ | 0.50 |        |  |  | 130,499,746 | 
|November  |  | $                           | 1.53 |  |                            | $ | 0.97 |        |  |  | 61,808,066  | 
|December  |  | $                           | 1.07 |  |                            | $ | 0.79 |        |  |  | 46,994,075  | 

Prior Sales

Other than
incentive securities issued pursuant to Penn Wests director and employee compensation plans and the Senior Notes, Penn West does not have any classes of securities that are outstanding but that are not listed or quoted on a market place.

Escrowed Securities and Securities Subject to Contractual Restriction on Transfer

To Penn Wests knowledge, no securities of Penn West are held in escrow, are subject to a pooling agreement, or are subject to a contractual restriction
on transfer (except in respect of pledges made to lenders and except in respect of incentive securities issued pursuant to Penn Wests director and employee compensation plans).

INDUSTRY CONDITIONS

Companies operating
in the oil and natural gas industry are subject to extensive regulation and control of operations (including land tenure, exploration, development, production, refining, upgrading, transportation and marketing) as a result of legislation enacted by
various levels of government and with respect to the pricing and taxation of oil and natural gas through policy enacted by the governments of Canada, Alberta, British Columbia, Saskatchewan and Manitoba, all of which should be carefully considered
by investors in the oil and gas industry. All current legislation is a matter of public record and we are unable to predict what additional legislation or amendments may be enacted. Outlined below are some of the principal aspects of
legislation, regulations and agreements governing the oil and gas industry in western Canada.



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Pricing and Marketing

Oil

In Canada, the producers of oil are entitled
to negotiate sales contracts directly with oil purchasers, with the result that the market determines the price of oil. Worldwide supply and demand factors primarily determine oil prices; however, prices are also influenced by regional market
and transportation issues. The specific price depends in part on oil quality, prices of competing fuels, distance to market, availability of transportation, value of refined products, the supply/demand balance, and contractual terms of
sale. Oil exporters are also entitled to enter into export contracts with terms not exceeding one year in the case of light crude oil and two years in the case of heavy crude oil, provided that an order approving such export has been obtained
from the National Energy Board of Canada (the NEB). Any oil export to be made pursuant to a contract of longer duration (to a maximum of 25 years) requires an exporter to obtain an export licence from the NEB. The NEB is
currently undergoing a consultation process to update the regulations governing the issuance of export licences. The updating process is necessary to meet the criteria set out in the federal Jobs, Growth and Long-term Prosperity Act (Canada)
(the Prosperity Act). In this transitory period, the NEB has issued, and is currently following, an Interim Memorandum of Guidance concerning Oil and Gas Export Applications and Gas Import Applications under Part VI of
the National Energy Board Act(Canada).

Natural Gas

Canadas natural gas market has been deregulated since 1985. Supply and demand determine the price of natural gas and price is calculated at the sale
point, being the wellhead, the outlet of a gas processing plant, on a gas transmission system such as the Alberta NIT (Nova Inventory Transfer), at a storage facility, at the inlet to a utility system or at the point of receipt by the
consumer. Accordingly, the price realized for natural gas is dependent upon such producers own arrangements (whether long or short term contracts and the specific point of sale). As natural gas is also traded on trading platforms
such as the Natural Gas Exchange (NGX), Intercontinental Exchange or the New York Mercantile Exchange (NYMEX) in the United States, spot and future prices can also be influenced by supply and demand fundamentals on these platforms. Natural gas
exported from Canada is subject to regulation by the NEB and the Government of Canada. Exporters are free to negotiate prices and other terms with purchasers, provided that the export contracts continue to meet certain other criteria prescribed
by the NEB and the Government of Canada. Natural gas (other than propane, butane and ethane) exports for a term of less than two years or for a term of two to 20 years (in quantities of not more than 30,000 m3/day) must be made pursuant to an NEB order. Any natural gas export to be made pursuant to a contract of longer duration (to a maximum of 40 years) or for a larger quantity requires an exporter
to obtain an export licence from the NEB.

The North American Free Trade Agreement

The North American Free Trade Agreement (NAFTA) among the governments of Canada, the United States and Mexico came into force on
January 1, 1994. In the context of energy resources, Canada continues to remain free to determine whether exports of energy resources to the United States or Mexico will be allowed, provided that any export restrictions do not: (i) reduce
the proportion of energy resources exported relative to the total supply of goods of the party maintaining the restriction as compared to the proportion prevailing in the most recent 36 month period; (ii) impose an export price higher than the
domestic price (subject to an exception with respect to certain measures which only restrict the volume of exports); and (iii) disrupt normal channels of supply.All three signatory countries are prohibited from imposing a minimum or
maximum export price requirement in any circumstance where any other form of quantitative restriction is prohibited. The signatory countries are also prohibited from imposing a minimum or maximum import price requirement except as permitted in
enforcement of countervailing and anti-dumping orders and undertakings.

NAFTA requires energy regulators to ensure the orderly and equitable
implementation of any regulatory changes and to ensure that the application of those changes will cause minimal disruption to contractual arrangements and avoid undue interference with pricing, marketing and distribution arrangements, all of which
are important for Canadian oil and natural gas exports. NAFTA contemplates the reduction of Mexican restrictive trade practices in the energy sector and prohibits discriminatory border restrictions and export taxes.



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Royalties and Incentives

General

In addition to federal regulation, each
province has legislation and regulations that govern royalties, production rates and other matters. The royalty regime in a given province is a significant factor in the profitability of crude oil, natural gas liquids, sulphur and natural gas
production and oil sands projects. Royalties payable on production from lands other than Crown lands are determined by negotiation between the mineral freehold owner and the lessee, although production from such lands is subject to certain
provincial taxes and royalties. Royalties from production on Crown lands are determined by governmental regulation and are generally calculated as a percentage of the value of gross production. The rate of royalties payable generally
depends in part on prescribed reference prices, well productivity, geographical location, field discovery date, method of recovery and the type or quality of the petroleum product produced. Other royalties and
royalty-like interests are, from time to time, carved out of the working interest owners interest through non-public transactions. These are often referred to as overriding royalties, gross
overriding royalties, net profits interests, or net carried interests.

Occasionally, the governments of the western Canadian provinces create incentive
programs for exploration and development. Such programs often provide for royalty rate reductions, royalty holidays or royalty tax credits and are generally introduced when commodity prices are low to encourage exploration and development
activity by improving earnings and cash flow within the industry.

The Government of Canada has signaled that it will, among other things, phase out
subsidies for the oil and gas industry, which would include only allowing the use of the Canadian Exploration Expenses tax deduction in cases of successful exploration, implementing more stringent reviews for pipelines, and establishing a
pan-Canadian framework for combating climate change within ninety days of the 2015 Paris Climate Conference, which concluded on December 12, 2015. These changes could adversely affect, among other things, the earnings of companies operating in
the oil and natural gas industry.

Alberta

On
January 29, 2016, the Government of Alberta released and accepted the Royalty Review Advisory Panels recommendations, which outlined the implementation of a Modernized Royalty Framework for Alberta (the
MRF). The MRF will take effect on January 1, 2017. Wells drilled prior to January 1, 2017 will continue to be governed by the current Alberta Royalty Framework for a period of 10 years until January 1,
2027. The MRF is structured in three phases: (i) Pre-Payout, (ii) Mid-Life, and (iii) Mature. During the Pre-Payout phase, a fixed 5% royalty will apply until the well reaches payout. Well payout occurs when the cumulative revenue from a well is
equal to the Drilling and Completion Cost Allowance (determined by a formula that approximates drilling and completion costs for wells based on depth, length and historical costs). The new royalty rate will be payable on gross revenue generated from
all production streams (oil, gas, and natural gas liquids), eliminating the need to label a well as oil or gas. Post-payout, the Mid-Life phase will apply a higher royalty rate than the Pre-Payout phase. While the metrics for
calculating the Mid-Life phase royalty have yet to be released, the rate will be determined based on commodity prices and are intended, on average, to yield the same internal rate of return as under the current Alberta Royalty Framework. In the
Mature phase, once a well reaches the tail end of its cycle and production falls below a Maturity Threshold, currently estimated to be 20 bbl/d for oil and 200 mcf/d for gas, the royalty rate will move to a sliding scale (based on volume and price)
with a minimum royalty rate of 5%. The downward adjustment of the royalty rate in the Mature phase is intended to account for the higher per-unit fixed cost involved in operating an older well. Details of the MRF, including the applicable royalty
rates and formulas, are scheduled to be released by March 31, 2016.

Oil sands projects are also subject to Albertas royalty regime. The
MRF does not change the oil sands royalty framework, however, the method and figures by which the royalties are calculated will be released to the public. Prior to payout of an oil sands project, the royalty is payable on gross revenues of an
oil sands project. Gross revenue royalty rates range between 1 and 9 percent depending on the market price of oil, determined using the average monthly price, expressed in Canadian dollars, for WTI crude oil at Cushing, Oklahoma: rates are 1
percent when the market price of oil is less than or equal to $55 per barrel and increase for every dollar of market price of oil increase to a maximum of 9 percent when oil is priced at $120 or higher. After payout, the royalty payable is the
greater of the gross revenue royalty based on the gross revenue royalty rate of 1 to 9 percent and the net revenue royalty based on the net revenue royalty rate. Net revenue royalty rates start at 25 percent and increase for every dollar of
market price of oil increase above $55 up to 40 percent when oil is priced at $120 or higher.



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Currently, producers of oil and natural gas from Crown lands in Alberta are required to pay annual rental
payments, at a rate of $3.50 per hectare, and make monthly royalty payments in respect of oil and natural gas produced.

Royalties, for wells drilled prior
to January 1, 2017, are paid pursuant to The New Royalty Framework (implemented by the Mines and Minerals (New Royalty Framework) Amendment Act, 2008) and the Alberta Royalty Framework until January 1, 2027.
Royalty rates for conventional oil are set by a single sliding rate formula, which is applied monthly and incorporates separate variables to account for production rates and market prices. The maximum royalty payable under the royalty regime is
40%. Royalty rates for natural gas under the royalty regime are similarly determined using a single sliding rate formula with the maximum royalty payable under the royalty regime set at 36%.

Producers of oil and natural gas from freehold lands in Alberta are required to pay annual freehold mineral tax. The freehold mineral tax is a tax levied by
the Government of Alberta on the value of oil and natural gas production from non-Crown lands and is derived from the Freehold Mineral Rights Tax Act (Alberta). The freehold mineral tax is levied on an annual basis on calendar year production
using a tax formula that takes into consideration, among other things, the amount of production, the hours of production, the value of each unit of production, the tax rate and the percentages that the owners hold in the title. The basic formula for
the assessment of freehold mineral tax is: revenue less allocable costs equals net revenue divided by wellhead production equals the value based upon unit of production. If payors do not wish to file individual unit values, a default price is
supplied by the Crown. On average, the tax levied is four percent of revenues reported from fee simple mineral title properties.

The Government of
Alberta has from time to time implemented drilling credits, incentives or transitional royalty programs to encourage oil and gas development and new drilling. For example, the Innovative Energy Technologies Program (the IETP)
has the stated objectives of increasing recovery from oil and gas deposits, finding technical solutions to the gas over bitumen issue, improving the recovery of bitumen by in-situ and mining techniques, and improving the recovery of natural gas from
coal seams. The IETP provides royalty adjustments to specific pilot and demonstration projects that utilize new or innovative technologies to increase recovery from existing reserves.

In addition, the Government of Alberta has implemented certain initiatives intended to accelerate technological development and facilitate the development of
unconventional resources (the Emerging Resource and Technologies Initiative). These initiatives apply to wells drilled before January 1, 2017, for a 10 year period, until January 1, 2027. Specifically:



| |  |  | Coalbed methane wells will receive a maximum royalty rate of 5 percent for 36 producing months up to 750 MMcf of production, retroactive to wells that began producing on or after May 1, 2010;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Shale gas wells will receive a maximum royalty rate of 5 percent for 36 producing months with no limitation on production volume, retroactive to wells that began producing on or after May 1, 2010;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Horizontalgaswells will receive a maximum royalty rate of 5 percent for 18 producing months up to 500 MMcf of production, retroactive to wells that commenced drilling on or after May 1, 2010; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Horizontal oil wells and horizontal non-project oil sands wells will receive a maximum royalty rate of 5 percent with volume and production month limits set according to the depth (including the horizontal distance) of
the well, retroactive to wells that commenced drilling on or after May 1, 2010.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

While the MRF eliminates the various royalty credits
and incentives outlined above for wells drilled after December 31, 2016, the Government of Alberta has committed to creating cost allowance programs for both enhanced oil recovery schemes and higher risk experimental drilling. Details of these
programs are scheduled to be released simultaneously with the finalization of the MRF, which is anticipated to occur prior to March 31, 2016.

British Columbia

Producers of oil and natural gas
from Crown lands in British Columbia are required to pay annual rental payments and make monthly royalty payments in respect of oil and natural gas produced. The amount payable as a royalty in respect of oil depends on the type and vintage of
the oil, the quantity of oil produced in a month and the value of that oil. Generally, oil is classified as either light or heavy and the vintage of oil is classified as either old oil produced from a pool discovered



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before October 31, 1975, new oil produced from a pool discovered between October 31, 1975 and June 1, 1998, and third-tier oil produced from a pool
discovered after June 1, 1998 or through an enhanced oil recovery (EOR) scheme. The royalty calculation takes into account the production of oil on a well-by-well basis, the specified royalty rate for a given vintage of oil,
the average unit selling price of the oil and any applicable royalty exemptions. Royalty rates are reduced on low productivity wells, reflecting the higher unit costs of extraction, and are the lowest for third-tier oil, reflecting the higher
unit costs of both exploration and extraction.

The royalty payable in respect of natural gas produced on Crown lands is determined by a sliding scale
formula based on a reference price, which is the greater of the average net price obtained by the producer and a prescribed minimum price. For non-conservation gas (not produced in association with oil), the royalty rate depends on the date of
acquisition of the oil and natural gas tenure rights and the spud date of the well and may also be impacted by the select price, a parameter used in the royalty rate formula to account for inflation. Royalty rates are fixed for certain classes
of non-conservation gas when the reference price is below the select price. Conservation gas is subject to a lower royalty rate than non-conservation gas. Royalties on natural gas liquids are levied at a flat rate of 20 percent of the
sales volume.

Producers of oil and natural gas from freehold lands in British Columbia are required to pay monthly freehold production taxes. For
oil, the level of the freehold production tax is based on the volume of monthly production. It is either a flat rate or, beyond a certain production level, is determined using a sliding scale formula based on the production level. For
natural gas, the freehold production tax is either a flat rate or, at certain production levels, is determined using a sliding scale formula based on the reference price similar to that applied to natural gas production on Crown land, and depends on
whether the natural gas is conservation gas or non-conservation gas. The production tax rate for freehold natural gas liquids is a flat rate of 12.25 percent.

As of January 1, 2017 all liquid natural gas (LNG) facilities will be subject to a 3.5% income tax. This income tax is scheduled to
increase to 5% in 2037. During the period in which net operating losses and capital investment are deducted, a tax rate of 1.5% will apply to the taxpayers net income. Once the net operating losses and capital investment have been
depleted, the full rate of 3.5% is payable. To encourage investment, the Government of British Columbia will offer a corporate income tax credit to any LNG taxpayer based on the amount of LNG acquired for an LNG facility.

The Government of British Columbia maintains a number of targeted royalty programs for key resource areas intended to increase the competitiveness of British
Columbias low productivity natural gas wells. These include both royalty credit and royalty reduction programs, including the following:



| |  |  | Deep Well Royalty Credit Program providing a royalty credit for natural gas wells defined in terms of a dollar amount applied against royalties, which is well specific and applies to drilling and completion costs
for vertical wells with a true vertical depth greater than 2,500 metres and horizontal wells with a true vertical depth greater than 1,900 metres (or 2,300 metres if spud before September 1, 2009) and if certain other criteria are met, which is
intended to reflect the higher drilling and completion costs. Effective April 1, 2014, there are two tiers to the Deep Well Royalty Credit Program, tier one and tier two. The pre-existing Deep Well Royalty Credit
Program, as described above, will comprise tier two of the program. Tier one of the Deep Well Royalty Credit Program applies to shallower horizontal wells with a true vertical depth less than or equal to 1,900 metres if spud after March 31,
2014. Currently all wells that qualify for the tier one royalty credits are subject to a minimum royalty of 6%, while wells that qualify for the tier two royalty credits are subject to a minimum royalty of 3%. These minimum royalty amounts apply
when the net royalty payable would otherwise be zero for a production month;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Deep Re-Entry Royalty Credit Program providing a royalty credit for deep re-entry wells with a true vertical depth to the top of pay if the re-entry well event is greater than 2,300 metres and a re-entry date
after November 30, 2003, or if the well was spud on or after January 1, 2009, with a true vertical depth to the completion point of the re-entry well event being greater than 2,300 metres;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Deep Discovery Royalty Credit Programproviding the lesser of a 3-year royalty holiday or 283,000,000 m3 of royalty free gas for deep discovery wells with a
true vertical depth greater than 4,000 metres whose surface locations are at least 20 kilometres away from the surface location of any well drilled into a recognized pool within the same formation;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | Coalbed Gas Royalty Reduction and Credit Programproviding a royalty reduction for coalbed gas wells with average daily production less than 17,000 m3as well
as a royalty credit for coalbed gas wells equal to $50,000 for wells drilled on Crown land and a tax credit equal to $30,000 for wells drilled on freehold land;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Marginal Royalty Reduction Program providing a monthly royalty reduction for low productivity natural gas wells with an average daily rate of production less than 23
m3 for every metre of marginal well depth in the first 12 months of production. To be eligible, wells must have been spudded after May 31, 1998 and the first month of marketable gas production
must have occurred between June 2003 and August 2008. Once a well passes the initial eligibility test, a reduction is realized in each month that average daily production is less than 25,000 m3;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Ultra-Marginal Royalty Reduction Program providing royalty reductions for low productivity, shallow natural gas wells. Vertical wells must be less than 2,500 metres and horizontal wells less than 2,300 metres to
be eligible. Production in the first 12 months ending after January 2007 must be less than 17 m3 per metre of depth for exploratory wildcat wells and less than 11 m3 per metre of depth for development wells and exploratory outpost wells. The well must have been spudded or re-entered after December 31, 2005. A reduction is realized in each month that average daily
production is less than 60,000 m3. Horizontal wells that are spud on or after April 1, 2014 are not eligible for the Ultra-Marginal Royalty Reduction Program due to the potential for overlap with
shallower horizontal wells eligible for a royalty credit under the Deep Well Royalty Credit Program; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Net Profit Royalty Reduction Program providing reduced initial royalty rates to facilitate the development and commercialization of technically complex resources such as coalbed gas, tight gas, shale gas and
enhanced-recovery projects, with higher royalty rates applied once capital costs have been recovered.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Oil produced from an oil well that is
located on either Crown or freehold land and completed in a new pool discovered subsequent to June 30, 1974 may also be exempt from the payment of a royalty for the first 36 months of production or 11,450 m3 of production, whichever comes first.

The Government of British Columbia also maintains an
Infrastructure Royalty Credit Program which provides royalty credits for up to 50 percent of the cost of certain approved road construction or pipeline infrastructure projects intended to facilitate increased oil and gas exploration and production
in under-developed areas and to extend the drilling season.

Saskatchewan

In Saskatchewan, taxes (Resource Surcharge) and royalties are applicable to revenue generated by corporations focused on oil and gas
operations.

A Resource Surcharge on the value of sales of oil, natural gas, potash, uranium and coal in Saskatchewan is levied under authority of The
Corporation Capital Tax Act. For resource corporations, the Resource Surcharge rate is 3% of the value of sales of all potash, uranium and coal produced in Saskatchewan, and oil and natural gas produced from wells drilled in Saskatchewan prior
to October 1, 2002. For oil and natural gas produced from wells drilled in Saskatchewan after September 30, 2002, the Resource Surcharge rate is 1.7% of the value of sales. The Resource Surcharge applies to resource trusts in
addition to resource corporations.

The amount payable as a Crown royalty or a freehold production tax in respect of oil depends on the type and vintage
of oil, the quantity of oil produced in a month, the value of the oil produced and specified adjustment factors determined monthly by the provincial government. For Crown royalty and freehold production tax purposes, conventional oil is divided
into types, being heavy oil, southwest designated oil or non-heavy oil other than southwest designated oil. The conventional royalty and production tax
classifications (fourth tier oil, third tier oil, new oil and old oil) depend on the finished drilling date of a well and are applied to each of the three crude oil types slightly
differently. Heavy oil is classified as third tier oil (produced from a vertical well having a finished drilling date on or after January 1, 1994 and before October 1, 2002 or incremental oil from new or expanded waterflood projects
with a commencement date on or after January 1, 1994 and before October 1, 2002), fourth tier oil (having a finished drilling date on or after October 1, 2002 or incremental oil from new or expanded waterflood projects with a
commencement date on or after October 1, 2002) or new oil (conventional oil that is not classified as third tier oil or fourth tier oil). Southwest designated oil uses the same definition of fourth tier oil but
third tier oil is defined as conventional oil produced from a vertical well having a finished drilling date on or after



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February 9, 1998 and before October 1, 2002 or incremental oil from new or expanded waterflood projects with a commencement date on or after February 9, 1998 and before October 1, 2002,
and new oil is defined as conventional oil produced from a horizontal well having a finished drilling date on or after February 9, 1998 and before October 1, 2002. For non-heavy oil other than southwest designated oil, the same
classification as heavy oil is used but new oil is defined as conventional oil produced from a vertical well completed after 1973 and having a finished drilling date prior to 1994, conventional oil produced from a horizontal well having a finished
drilling date on or after April 1, 1991 and before October 1, 2002, or incremental oil from new or expanded waterflood projects with a commencement date on or after January 1, 1974 and before 1994 whereas old oil is defined as
conventional oil not classified as third or fourth tier oil or new oil. Production tax rates for freehold production are determined by first determining the Crown royalty rate and then subtracting the Production Tax Factor
(PTF)applicable to that classification of oil. Currently the PTF is 6.9 for old oil, 10.0 for new oil and third tier oil and 12.5 for fourth tier oil. The minimum
rate for freehold production tax is zero.

Base prices are used to establish lower limits in the price-sensitive royalty structure for conventional oil
and apply at a reference well production rate of 100 m3for old oil, new oil and third tier oil, and 250 m3per month for fourth tier
oil. Where average wellhead prices are below the established base prices of $100 per m3 for third and fourth tier oil and $50 per m3for
new oil and old oil, base royalty rates are applied. Base royalty rates are 5 percent for all fourth tier oil, 10 percent for heavy oil that is third tier oil or new oil, 12.5 percent for southwest designated oil that is third tier oil or new
oil, 15 percent for non-heavy oil other than southwest designated oil that is third tier or new oil, and 20 percent for old oil. Where average wellhead prices are above base prices, marginal royalty rates are applied to the proportion of
production that is above the base oil price. Marginal royalty rates are 30 percent for all fourth tier oil, 25 percent for heavy oil that is third tier oil or new oil, 35 percent for southwest designated oil that is third tier oil or new oil,
35 percent for non-heavy oil other than southwest designated oil that is third tier or new oil, and 45 percent for old oil.

The amount payable as a Crown
royalty or a freehold production tax in respect of natural gas production is determined by a sliding scale based on the monthly provincial average gas price published by the Government of Saskatchewan, the quantity produced in a given month, the
type of natural gas, and the classification of the natural gas. Like conventional oil, natural gas may be classified as non-associated gas (gas produced from gas wells) or associated gas (gas produced from oil wells) and
royalty rates are determined according to the finished drilling date of the respective well. Non-associated gas is classified as new gas (having a finished drilling date before February 9, 1998 with a first production date on or after October
1, 1976), third tier gas (having a finished drilling date on or after February 9, 1998 and before October 1, 2002), fourth tier gas (having a finished drilling date on or after October 1, 2002) and old gas (not classified as either third tier,
fourth tier or new gas). A similar classification is used for associated gas except that the classification of old gas is not used, the definition of fourth tier gas also includes production from oil wells with a finished drilling date prior to
October 1, 2002, where the individual oil well has a gas-oil production ratio in any month of at least 3,500 m3 of gas for every m3 of oil, and
new gas is defined as oil produced from a well with a finished drilling date before February 9, 1998 that received special approval, prior to October 1, 2002, to produce oil and gas concurrently without gas-oil ratio penalties.

On December 9, 2010, the Government of Saskatchewan enacted the Freehold Oil and Gas Production Tax Act, 2010 with the intention to facilitate the
efficient payment of freehold production taxes by industry. Two new regulations with respect to this legislation are: (i) The Freehold Oil and Gas Production Tax Regulations, 2012 which sets out the terms and conditions under which the
taxes are calculated and paid; and (ii) The Recovered Crude Oil Tax Regulations, 2012which sets out the terms and conditions under which taxes on recovered crude oil that was delivered from a crude oil recovery facility on or after
March 1, 2012 are to be calculated and paid.

As with conventional oil production, base prices based on a well reference rate of 250 103 m3per month are used to establish lower limits in the price-sensitive royalty structure for natural gas. Where average field-gate prices are
below the established base prices of $1.35 per gigajoulefor third and fourth tier gas and $0.95 per gigajoulefor new gas and old gas, base
royalty rates are applied. Base royalty rates are 5 percent for all fourth tier gas, 15 percent for third tier or new gas, and 20 percent for old gas. Where average well-head prices are above base prices, marginal royalty rates are applied
to the proportion of production that is above the base gas price. Marginal royalty rates are 30 percent for all fourth tier gas, 35 percent for third tier and new gas, and 45 percent for old gas.The currentregulatory
scheme provides forcertain differences with respect to the administration of fourth tier gas which is associated gas.



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The Government of Saskatchewan currently provides a number of targeted incentive programs. These include
both royalty reduction and incentive volume programs, including the following:



| |  |  | Royalty/Tax Incentive Volumes for Vertical Oil Wells Drilled on or after October1, 2002providing reduced Crown royalty (a Crown royalty rate of the lesser of fourth tier oil Crown
royalty rate and 2.5 percent) and freehold tax rates (a freehold production tax rate of 0 percent) on incentive volumes of 8,000 m3for deep development vertical oil wells, 4,000 m3for non-deep exploratory vertical oil wells and 16,000 m3for deep exploratory vertical oil wells (more than 1,700 metres or within certain
formations) and after the incentive volume is produced, the oil produced will be subject to the fourth tier royalty tax rate;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalty/Tax Incentive Volumes for Exploratory Gas Wells Drilled on or after October1, 2002providing reduced Crown royalty (a Crown royalty rate of the lesser of fourth tier oil
Crown royalty rate and 2.5 percent) and freehold tax rates (a freehold production tax rate of 0 percent) on incentive volumes of 25,000,000 m3 for qualifying exploratory gas wells;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalty/Tax Incentive Volumes for Horizontal Oil Wells Drilled on or after October1, 2002providing reduced Crown royalty (a Crown royalty rate of the lesser of fourth tier oil
Crown royalty rate and 2.5 percent) and freehold tax rates (a freehold production tax rate of 0%) on incentive volumes of 6,000 m3 for non-deep horizontal oil wells and 16,000 m3 for deep horizontal oil wells (more than 1,700 metres total vertical depth or within certain formations) and after the incentive volume is produced, the oil produced will be subject to the
fourth tier royalty tax rate;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalty/Tax Incentive Volumes for Horizontal Gas Wells drilled on or after June1, 2010 and before April1, 2013 providing for a classification of the well as a qualifying
exploratory gas well and resulting in a reduced Crown royalty (a Crown royalty rate of the lesser of fourth tier oil Crown royalty rate and 2.5 percent) and freehold tax rates (a freehold production tax rate of 0 percent) on incentive
volumes of 25,000,000 m3for horizontal gas wells and after the incentive volume is produced, the gas produced will be subject to the fourth tier royalty tax rate;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalty/Tax Regime for Incremental Oil Produced from New or Expanded Waterflood Projects Implemented on or after October1, 2002 whereby incremental production from approved waterflood projects
is treated as fourth tier oil for the purposes of Crown royalty and freehold tax calculations;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalty/Tax Regime for Enhanced Oil Recovery Projects (Excluding Waterflood Projects) Commencing prior to April1, 2005 providing lower Crown royalty and freehold tax determinations based in
part on the profitability of EOR projects during and subsequent to the payout of the EOR operations;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalty/Tax Regime for Enhanced Oil Recovery Projects (Excluding Waterflood Projects) Commencing on or after April1, 2005 providing a Crown royalty of 1 percent of gross revenues on EOR
projects pre-payout and 20 percent of EOR operating income post-payout and a freehold production tax of 0 percent pre-payout and 8 percent post-payout on operating income from EOR projects; and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalty/Tax Regime for High Water-Cut Oil Wells designed to extend the product lives and improve the recovery rates of high water-cut oil wells and granting third tier oil royalty/tax rates with a
Saskatchewan Resource Credit of 2.5 percent for oil produced prior to April 2013 and 2.25 percent for oil produced on or after April 1, 2013 to incremental high water-cut oil production resulting from qualifying investments made to
rejuvenate eligible oil wells and/or associated facilities.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

On June 22, 2011, the Government of Saskatchewan released the Upstream
Petroleum Industry Associated Gas Conservation Standards, which are designed to reduce emissions resulting from the flaring and venting of associated gas (the Associated Natural Gas Standards). The Associated Natural Gas
Standards were jointly developed with industry and the implementation of such standards commenced on July 1, 2012 for new wells and facilities licensed on or after such date. The new standards began to apply to existing licensed wells and
facilities on July 1, 2015.

Effective April 1, 2014, the Saskatchewan Ministry of the Economy streamlined fees related to licenses and
applications in the oil and gas sector by eliminating 11 different licensing fees, which resulted in an aggregate of 20,000 fee transactions per year, and replacing them with a single annual levy based on a companys production and number of
wells. While the fees have been streamlined, approvals to conduct the relevant activities are still required.



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Manitoba

In Manitoba, the royalty amount payable on oil produced from Crown lands depends on the classification of the oil produced as old oil (produced
from a well drilled prior to April 1, 1974 that does not qualify as new oil or third tier oil), new oil (oil that is not third tier oil and is produced from a well drilled on or after April 1, 1974 and prior to
April 1, 1999, from an abandoned well re-entered during that period, from an old oil well as a result of an enhanced recovery project implemented during that period, or from a horizontal well), third tier oil (oil produced from a
vertical well drilled after April 1, 1999, an abandoned well re-entered after that date, an inactive vertical well activated after that date, a marginal well that has undergone a major workover, or from an old oil well or a new oil well as a
result of an enhanced recovery project implemented after that date), or holiday oil (oil that is exempt from any royalty or tax payable). Royalty rates are calculated on a sliding scale and based on the monthly oil production from a
spacing unit, or oil production allocated to a unit tract under a unit agreement or unit order. For horizontal wells, the royalty on oil produced from Crown lands is calculated based on the amount of oil production allocated to a spacing unit
in accordance with the applicable regulations.

Royalties payable on natural gas and NGL production from Crown lands are equal to 12.5 percent of the
volume of natural gas sold, calculated for each production month.

Producers of oil, natural gas and NGL from freehold lands in Manitoba are required to
pay monthly freehold production taxes. The freehold production tax payable on oil is calculated on a sliding scale based on the monthly production volume and the classification of oil as old oil, new oil, third tier oil and holiday
oil. Producers of natural gas from freehold lands in Manitoba are required to pay a monthly freehold production tax equal to 1.2 percent of the volume sold, calculated for each production month. There is no freehold production tax payable
on gas consumed as lease fuel.

The Government of Manitoba maintains a Drilling Incentive Program (the Program) with the intent of
promoting investment in the sustainable development of petroleum resources. The Program provides the licensee of newly drilled wells, or qualifying wells where a major workover has been completed, with a holiday oil volume pursuant
to which no Crown royalties or freehold production taxes are payable until the holiday oil volume has been produced. Holiday oil volumes must be produced within 10 years of the finished drilling date or the completion date of a major
workover. Wells drilled or receiving a marginal well major workover incentive after December 31, 2013 and prior to January 1, 2019 must pay a minimum royalty of 3 percent on Crown production or a minimum tax of 1 percent on freehold
production. Wells receiving the Pressure Maintenance Project Incentive(outlined below) are not subject to the minimum royalty or minimum tax. Wells drilled for injection, or converted to injection wells, in an approved enhanced recovery
project, earn a one year holiday for portions of the project area.

The Program consists of the following components, such components being subject to
additional considerations under the

Crown Royalty and Incentives Regulation:



| |  |  | Vertical Well Incentiveprovides licensees of a vertical development or exploratory well drilled after December 31, 2013 and prior to January 1, 2019 with a holiday oil volume (a HOV)
of 500 m3. To qualify, the well must be less than 1.6 kilometres from the nearest well cased for production from the same or deeper zone;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Exploration and Deep Well Incentive provides a HOV for exploratory or deep oil development wells drilled after December 31, 2013 and prior to January 1, 2019 as follows:
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Non-deep exploratory wells drilled more than 1.6 kilometres from the nearest well cased for production from the same or deeper zone earn a HOV of 4,000 m3;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Deep exploratory wells drilled below the Birdbear formation earn a HOV of 8,000 m3; and
| | - |  | ---------------------------------------------------------------------------------------



| |  |  | Deep development wells completed for production in the Birdbear formation or deeper earn a HOV of 8,000 m3;
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | Horizontal Well Incentive provides a HOV of 8,000 m3 for any horizontal well drilled after December 31, 2013 and prior to January 1, 2019 achieving
an angle of at least 80 degrees for a minimum distance of 100 metres;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | Marginal Well Major Workover Incentive provides a HOV of 500 m3for any marginal well where a major workover is completed prior to January 1, 2019. A marginal
oil well is a well or abandoned well that was not operated over the previous 12 months or that produced at an average rate of less than 3 m3per operating day;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Pressure Maintenance Project Incentive provides a one-year exemption from the payment of Crown royalties or freehold production taxes for a unit tract in which an injection well is drilled or a well is converted
to water injection. This exemption applies to the unit tract in which the vertical injection well is located and for a horizontal injection well to a maximum of four unit tracts within the drainage unit of the well. For a well that is converted
to injection after December 31, 2013 and before January 21, 2019 and that has a remaining HOV, the exemption will be extended to 18 months; and
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Solution Gas Conservation Incentive provides a royalty and tax exemption on gas until December 31, 2018 for projects that capture solution gas implemented after December 31, 2013.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The Holiday Oil Volume Account, which allowed the movement of HOV to and from wells under specific conditions, was eliminated as of January 1, 2015.
Previously, the holder of an existing account was able to make a one-time transfer of 2,000 m3to a well drilled between January 1 and December 31, 2014.

Land Tenure

The respective provincial governments
predominantly own the rights to crude oil and natural gas located in the western provinces, with the exception of Manitoba where private ownership accounts for approximately 80 percent of the crude oil and natural gas rights in the southwestern
portion of the province. Provincial governments grant rights to explore for and produce oil and natural gas pursuant to leases, licences and permits for varying terms and on conditions set forth in provincial legislation, including requirements
to perform specific work or make payments. Private ownership of oil and natural gas also exists in such provinces and rights to explore for and produce such oil and natural gas are granted by lease on such terms and conditions as may be
negotiated.

Each of the provinces of Alberta, British Columbia, Saskatchewan and Manitoba have implemented legislation, in some cases, providing for the
reversion to the Crown of mineral rights to deep, non-productive geological formations at the conclusion of the primary term of a lease or license.

The
Government of British Columbia expanded its policy of deep rights reversion for leases issued after March 29, 2007 to provide for the reversion of both shallow and deep formations, in some cases, that cannot be shown to be capable of production
at the end of their primary term.

Alberta also has a policy of shallow rights reversion which provides for the reversion to the Crown of
mineral rights to shallow, non-productive geological formations for all leases and licenses issued after January 1, 2009 at the conclusion of the primary term of the lease or license.

Production and Operation Regulations

The oil and natural
gas industry in Canada is highly regulated and subject to significant control by provincial regulators. Regulatory approval is required for, among other things, the drilling of oil and natural gas wells, construction and operation of
facilities, the storage, injection and disposal of substances and the abandonment and reclamation of well-sites. In order to conduct oil and gas operations and remain in good standing with the applicable provincial regulator, we must comply
with applicable legislation, regulations, orders, directives and other directions (all of which are subject to governmental oversight, review and revision, from time to time). Compliance with such legislation, regulations, orders, directives or
other directions can be costly and a breach of the same may result in fines or other sanctions.

Environmental Regulation

The oil and natural gas industry is currently subject to regulation pursuant to a variety of provincial and federal environmental legislation, all of which is
subject to governmental review and revision from time to time. Such legislation provides for, among other things, restrictions and prohibitions on the spill, release or emission of various substances



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produced in association with certain oil and gas industry operations, such as sulphur dioxide and nitrous oxide. In addition, such legislation sets out the requirements with respect to
oilfield waste handling and storage, habitat protection and the satisfactory operation, maintenance, abandonment and reclamation of well and facility sites. Compliance with such legislation can require significant expenditures and a breach of
such requirements may result in suspension or revocation of necessary licenses and authorizations, civil liability and the imposition of material fines and penalties.

Federal

Pursuant to the Prosperity Act,
the Government of Canada amended or repealed several pieces of federal environmental legislation and in addition, created a new federal environment assessment regime that came in to force on July 6, 2012. The changes to the environmental
legislation under the Prosperity Act are intended to provide for more efficient and timely environmental assessments of projects that previously had been subject to overlapping legislative jurisdiction.

Alberta

The Alberta Energy Regulator (the
AER) is the single regulator responsible for all energy development in Alberta. The AER ensures the safe, efficient, orderly, and environmentally responsible development of hydrocarbon resources including allocating and conserving
water resources, managing public lands, and protecting the environment. The AERs responsibilities exclude the functions of the Alberta Utilities Commission and the Surface Rights Board, as well as Alberta Energys responsibility for
mineral tenure. The objective behind a single regulator is to provide for an enhanced regulatory regime that is efficient, attractive to business and investors, and effective in supporting public safety, environmental management and resource
conservation while respecting the rights of landowners.

The Government of Alberta relies on regional planning to accomplish its responsible resource
development goals. The following frameworks, plans and policies form the basis of Albertas Integrated Resource Management System (IRMS). The IRMS method to natural resource management sets out to engage and consult with
stakeholders and the public. While the AER is the primary regulator for energy development, several governmental departments and agencies may be involved in land use issues, including Alberta Environment and Parks, Alberta Energy, the AER, the
Alberta Environmental Monitoring, Evaluation and Reporting Agency, the Policy Management Office, the Aboriginal Consultation Office, and the Land Use Secretariat.

In December 2008, the Government of Alberta released a new land use policy for surface land in Alberta, the Alberta Land Use Framework (the
ALUF). The ALUF sets out an approach to manage public and private land use and natural resource development in a manner that is consistent with the long-term economic, environmental and social goals of the province. It calls for
the development of seven region-specific land use plans in order to manage the combined impacts of existing and future land use within a specific region and the incorporation of a cumulative effects management approach into such plans.

The Alberta Land Stewardship Act (the ALSA) provides the legislative authority for the Government of Alberta to implement the
policies contained in the ALUF. Regional plans established under the ALSA are deemed to be legislative instruments equivalent to regulations and will be binding on the Government of Alberta and provincial regulators, including those governing the
oil and gas industry. In the event of a conflict or inconsistency between a regional plan and another regulation, regulatory instrument or statutory consent, the regional plan will prevail. Further, the ALSA requires local governments, provincial
departments, agencies and administrative bodies or tribunals to review their regulatory instruments and make any appropriate changes to ensure that they comply with an adopted regional plan. The ALSA also contemplates the amendment or extinguishment
of previously issued statutory consents such as regulatory permits, licenses, registrations, approvals and authorizations for the purpose of achieving or maintaining an objective or policy resulting from the implementation of a regional plan. Among
the measures to support the goals of the regional plans contained in the ALSA are conservation easements, which can be granted for the protection, conservation and enhancement of land, and conservation directives, which are explicit declarations
contained in a regional plan to set aside specified lands in order to protect, conserve, manage and enhance the environment.

On August 22, 2012, the
Government of Alberta approved the Lower Athabasca Regional Plan (LARP) which came into force on September 1, 2012. The LARP is the first regional plan developed under the ALUF. LARP covers a region in the northeastern
corner of Alberta that is approximately 93,212 square kilometres in size. The region includes a substantial portion of the Athabasca oilsands area, which contains approximately 82 percent of the provinces oilsands resources and much of
the Cold Lake oilsands area. LARP establishes six new conservation areas and nine new provincial recreation areas. In conservation and provincial recreation areas, conventional oil and gas companies with pre-existing tenure may continue to



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operate. Any new petroleum and gas tenure issued in conservation and provincial recreation areas will include a restriction that prohibits surface access. In contrast, oilsands companies
tenure has been (or will be) cancelled in conservation areas and no new oilsands tenure will be issued. While new oil sands tenure will be issued in provincial recreation areas, new and existing oil sands tenure will prohibit surface access.

In July 2014, the Government of Alberta approved the South Saskatchewan Regional Plan (SSRP) which came into force on
September 1, 2014. The SSRP is the second regional plan developed under the ALUF. The SSRP covers approximately 83,764 square kilometres and includes 44% of the provincial population.

The SSRP creates four new and four expanded conservation areas, and two new and six expanded provincial parks and recreational areas. Similar to LARP, the
SSRP will honour existing petroleum and natural gas tenure in conservation and provincial recreational areas. However, any new petroleum and natural gas tenures sold in conservation areas, provincial parks, and recreational areas will prohibit
surface access. However, oil and gas companies must minimize impacts of activities on the natural landscape, historic resources, wildlife, fish and vegetation when exploring, developing and extracting the resources. Freehold mineral rights will not
be subject to this restriction.

British Columbia

In British Columbia, the Oil and Gas Activities Act (the OGAA) impacts conventional oil and gas producers, shale gas producers, and
other operators of oil and gas facilities in the province. Under the OGAA, the British Columbia Oil and Gas Commission (the BCO&G Commission) has broad powers, particularly with respect to compliance and enforcement and the
setting of technical safety and operational standards for oil and gas activities. The Environmental Protection and Management Regulation establishes the governments environmental objectives for water, riparian habitats, wildlife and
wildlife habitat, old-growth forests and cultural heritage resources. The OGAA requires the BCO&G Commission to consider these environmental objectives in deciding whether or not to authorize an oil and gas activity. In addition, although
not an exclusively environmental statute, the Petroleum and Natural Gas Act, in conjunction with the OGAA, requires proponents to obtain various approvals before undertaking exploration or production work, such as geophysical licences,
geophysical exploration project approvals, permits for the exclusive right to do geological work and geophysical exploration work, and well, test hole and water-source well authorizations. Such approvals are given subject to environmental
considerations and licences and project approvals can be suspended or cancelled for failure to comply with this legislation or its regulations.

Saskatchewan

In May 2011, the Government of
Saskatchewan passed changes to The Oil and Gas Conservation Act(SKOGCA), the act governing the regulation of resource development operations in the province. Although the associated Bill received Royal Assent on
May 18, 2011, it was not proclaimed into force until April 1, 2012, in conjunction with the release of The Oil and Gas Conservation Regulations, 2012 (OGCR) and The Petroleum Registry and Electronic Documents
Regulations (Registry Regulations). The aim of the amendments to the SKOGCA, and the associated regulations, is to provide resource companies investing in Saskatchewans energy and resource industries with the best
support services and business and regulatory systems available. With the enactment of the Registry Regulations and the OGCR, the Government of Saskatchewan has implemented a number of operational aspects, including the increased demand for
record-keeping, increased testing requirements for injection wells and increased investigation and enforcement powers, and procedural aspects, including those related to Saskatchewans participation as partner in the Petroleum Registry of
Alberta.

Manitoba

In Manitoba, the Petroleum
Branch of Innovation, Energy and Mines develops, recommends, implements and administers policies and legislation aimed at the sustainable, orderly, safe and efficient development of crude oil and natural gas resources. Oil and gas exploration,
development, production and transportation are subject to regulation under The Oil and Gas Act(the MBOGA) and The Oil and Gas Production Tax Act,and related regulations and guidelines.



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Liability Management Rating Programs

Alberta

In Alberta, the AER administers the
Licensee Liability Rating Program (the AB LLR Program). The AB LLR Program is a liability management program governing most conventional upstream oil and gas wells, facilities and pipelines. The ABOGCA establishes an orphan fund
(the Orphan Fund) to pay the costs to suspend, abandon, remediate and reclaim a well, facility or pipeline included in the AB LLR Program if a licensee or working interest participant (WIP) becomes
defunct. The Orphan Fund is funded by licensees in the AB LLR Program through a levy administered by the AER. The AB LLR Program is designed to minimize the risk to the Orphan Fund posed by unfunded liability of licensees and prevent the
taxpayers of Alberta from incurring costs to suspend, abandon, remediate and reclaim wells, facilities or pipelines. The AB LLR Program requires a licensee whose deemed liabilities exceed its deemed assets to provide the AER with a security deposit.
The ratio of deemed liabilities to deemed assets is assessed once each month and failure to post the required security deposit may result in the initiation of enforcement action by the AER.

Made effective in three phases, from May 1, 2013 to August 1, 2015, the AER implemented important changes to the AB LLR Program (the
Changes) that resulted in a significant increase in the number of oil and gas companies in Alberta that are required to post security. The Changes affect the deemed parameters and costs used in the formula that calculates the
ratio of deemed liabilities to deemed assets under the AB LLR Program, increasing a licensees deemed liabilities and rendering the industry average netback factor more sensitive to asset value fluctuations. The Changes stem from concern that
the previous regime significantly underestimated the environmental liabilities of licensees.

The AER implemented the inactive well compliance program
(the IWCP) to address the growing inventory of inactive wells in Alberta and to increase the AERs surveillance and compliance efforts under Directive 013: Suspension Requirements for Wells(Directive
013). The IWCP applies to all inactive wells that are noncompliant with Directive 013 as of April 1, 2015. The objective is to bring all inactive noncompliant wells under the IWCP into compliance with the requirements of Directive 013
within five years. As of April 1, 2015, each licensee is required to bring 20% of its inactive wells into compliance every year, either by reactivating or suspending the wells in accordance with Directive 013 or by abandoning them in accordance
with Directive 020: Well Abandonment. The list of current wells subject to the IWCP is available on the AERs Digital Data Submission system.

British Columbia

In British Columbia, the
BCO&G Commission implements the Liability Management Rating (LMR) Program, designed to manage public liability exposure related to oil and gas activities by ensuring that permit holders carry the financial risks and regulatory
responsibility of their operations through to regulatory closure. Under the LMR Program, the BCO&G Commission determines the required security deposits for permit holders under the OGAA. The LMR is the ratio of a permit holders
deemed assets to deemed liabilities. Permit holders whose deemed liabilities exceed deemed assets will be considered high risk and reviewed for a security deposit. Permit holders who fail to submit the required security deposit within the
allotted timeframe may be in non-compliance with the OGAA.

Saskatchewan

In Saskatchewan, the Ministry of Economy implements the Licensee Liability Rating Program (the SK LLR Program). The SK LLR Program is
designed to assess and manage the financial risk that a licensees well and facility abandonment and reclamation liabilities pose to an orphan fund (the Oil and Gas Orphan Fund) established under the SKOGCA. The Oil and Gas
Orphan Fund is responsible for carrying out the abandonment and reclamation of wells and facilities contained within the SK LLR Program when a licensee or WIP is defunct or missing. The SK LLR Program requires a licensee whose deemed liabilities
exceed its deemed assets to post a security deposit. The ratio of deemed liabilities to deemed assets is assessed once each month for all licensees of oil, gas and service wells and upstream oil and gas facilities.

Manitoba

To date, the Government of Manitoba has
not implemented a liability management rating program similar to those found in the other western provinces. However, operators of wells licensed in the province are required to post a performance deposit to ensure that the operation and
abandonment of wells and the rehabilitation of sites occurs in accordance with the MBOGA and the Drilling and Production Regulations. In certain circumstances, a performance deposit may be refunded. The



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MBOGA also establishes the Abandonment Fund Reserve Account (the Abandonment Fund). The Abandonment Fund is a source of funds that may be used to operate or abandon a well when
the licensee or permittee fails to comply with the MBOGA. The Abandonment Fund may also be used to rehabilitate the site of an abandoned well or facility or to address any adverse effect on property caused by a well or facility. Deposits into the
Abandonment Fund are comprised of non-refundable levies charged when certain licences and permits are issued or transferred as well as annual levies for inactive wells and batteries.

Climate Change Regulation

Federal

Climate change regulation at both the federal and provincial level has the potential to significantly affect the regulatory environment of the oil and natural
gas industry in Canada. Such regulations, surveyed below, impose certain costs and risks on the industry.

The Government of Canada is a signatory to
the United Nations Framework Convention on Climate Change(the UNFCCC) and a participant to the Copenhagen Accord (a non-binding agreement created by the UNFCCC which represents a broad political consensus and reinforces
commitments to reducing greenhouse gas (GHG) emissions). On January 29, 2010, Canada inscribed in the Copenhagen Accord its 2020 economy-wide target of a 17 percent reduction of GHG emissions from 2005 levels. This target is
aligned with the United States target. In a report dated October 2013, the Government of Canada stated that this target represents a significant challenge in light of strong economic growth (Canadas economy is projected to be
approximately 31 percent larger in 2020 compared to 2005 levels).

On April 26, 2007, the Government of Canada released Turning the Corner: An
Action Plan to Reduce Greenhouse Gases and Air Pollution (the Action Plan) which set forth a plan for regulations to address both GHGs and air pollution. An update to the Action Plan, Turning the Corner:
Regulatory Framework for Industrial Greenhouse Gas Emissions was released on March 10, 2008 (the Updated Action Plan). The Updated Action Plan outlines emissions intensity-based targets for application to regulated
sectors on a facility-specific basis, sector-wide basis or company-by-company basis. Although the intention was for draft regulations aimed at implementing the Updated Action Plan to become binding on January 1, 2010, the only regulations being
implemented are in the transportation and electricity sectors. The Government of Canada indicates that it is taking a sector-by-sector regulatory approach to reducing GHG emissions and is working on regulations for other sectors. Representatives of
the Government of Canada have indicated that the proposals contained in the Updated Action Plan will be modified to ensure consistency with the direction ultimately taken by the United States with respect to GHG emissions regulation. In
June 2012, the second US-Canada Clean Energy Dialogue Action Plan was released. The plan renewed efforts to enhance bilateral collaboration on the development of clean energy technologies to reduce GHG emissions.

On December 12, 2015, the UNFCCC adopted the Paris Agreement, to which Canada is a participant. The Paris Agreement mandates that all countries must work
together to limit global temperature increases resulting from GHG emissions to a goal of less than 2° Celsius and to pursue efforts to limit global temperature increases below 1.5° Celsius, through implementing successive nationally
determined contributions. Technical details remain unreleased, but the Government of Canada is expected to announce a plan within 90 days of the Paris Agreement, which will significantly increase Canadas GHG emission reduction targets.

Alberta

As part of its efforts to reduce GHG
emissions, the Government of Alberta introduced legislation to address GHG emissions: the Climate Change and Emissions Management Act(the CCEMA) enacted on December 4, 2003 and amended through the Climate Change and
Emissions Management Amendment Act, which received royal assent on November 4, 2008. The accompanying regulations include the Specified Gas Emitters Regulation (SGER), which imposes GHG limits, and the Specified Gas
Reporting Regulation, which imposes GHG emissions reporting requirements. Alberta is the first jurisdiction in North America to impose regulations requiring large facilities in various sectors to reduce their GHG emissions. The SGER applies to
facilities emitting more than 100,000 tonnes of GHGs in 2003 or any subsequent year (Regulated Emitters), and requires reductions in GHG emissions intensity (e.g. the quantity of GHG emissions per unit of production) from
emissions intensity baselines established in accordance with the SGER.



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On June 25, 2015, the Government of Alberta renewed the SGER for a period of two years with significant
amendments while Albertas newly formed Climate Advisory Panel conducted a comprehensive review of the provinces climate change policy. In 2015, Regulated Emitters were required to reduce their emissions intensity by 2% from their
baseline in the fourth year of commercial operation, 4% of their baseline in the fifth year, 6% of their baseline in the sixth year, 8% of their baseline in the seventh year, 10% of their baseline in the eighth year, and 12% of their baseline in the
ninth or subsequent years. These reduction targets will increase, meaning that Regulated Emitters in their ninth or subsequent years of commercial operation must reduce their emissions intensity from their baseline by 15% in 2016 and 20% in 2017.

Regulated Emitters can meet their emissions intensity targets through a combination of the following: (1) producing its products with lower carbon
inputs, (2) purchasing emissions offset credits from non-regulated emitters (generated through activities that result in emissions reductions in accordance with established protocols), (3) purchasing emissions performance credits from other
Regulated Emitters that earned credits through the reduction of their emissions below the 100,000 tonne threshold, (4) cogeneration compliance adjustments, and (5) by contributing to the Climate Change and Emissions Management Fund (the
Fund). Contributions to the Fund are made at a rate of $15 per tonne of GHG emissions, increasing to a rate of $20 per tonne of GHG emissions in 2016 and $30 per tonne of GHG emissions in 2017. Proceeds from the Fund are
directed at testing and implementing new technologies for greening energy production.

We do not operate any facilities in Alberta that are covered by the
CCEMA and the SGER. However, we do have minor working interests in non-operated facilities that are subject to the CCEMA and the SGER. As at the date hereof, we do not believe that our financial obligations associated with such non-operated
facilities are material.

On November 22, 2015, as a result of the Climate Advisory Panels Climate Leadership report, the Government of Alberta
announced its Climate Leadership Plan which proposes to introduce a carbon tax on all emitters. An economy-wide levy of $30 per tonne of GHG emissions will be phased in, starting in January 2017 at $20 per tonne, and increasing to $30 per tonne
in January 2018. An oil sands specific approach was proposed to replace the $30 per tonne of GHG emissions to further reduce emissions and promote carbon competitiveness rather than rewarding past intensity levels. A 100 megatonne per year
limit for GHG emissions was proposed for oil sands operations, which currently emit roughly 70 megatonnes per year. This cap exempts new upgrading and cogeneration facilities, which are allocated a separate 10 megatonne limit. The existing SGER will
be replaced for large industrial facilities with a Carbon Competitiveness Regulation (CCR), in which sector specific output-based carbon allocations will be used to ensure competitiveness.

Alberta is also the first jurisdiction in North America to direct dedicated funding to implement carbon capture and storage technology across industrial
sectors. The Government of Alberta has committed $1.24 billion over 15 years to fund two large-scale carbon capture and storage projects that will begin commercializing the technology on the scale needed to be successful. On December 2,
2010, the Government of Alberta passed theCarbon Capture and Storage Statutes Amendment Act, 2010, which deemed the pore space underlying all land in Alberta to be, and to have always been, the property of the Crown and provided for the
assumption of long-term liability for carbon sequestration projects by the Crown, subject to the satisfaction of certain conditions.

British
Columbia

In February 2008, the government of British Columbia announced a revenue-neutral carbon tax that took effect July 1,
2008. The tax is consumption-based and applied at the time of retail sale or consumption of virtually all fossil fuels purchased or used in British Columbia. The current tax level is $30 per tonne of GHG emissions. The final scheduled
increase took effect on July 1, 2012. There is no plan for further rate increases or expansions at this time. In order to make the tax revenue-neutral, British Columbia has implemented tax credits and reductions in order to offset the tax
revenues that the Government of British Columbia would otherwise receive from the tax. In 2015, the amount of carbon tax paid by us pursuant to this legislation with respect to our operated and non-operated properties in British Columbia was
not material to us.

In the 2012 Budget, British Columbia announced that the government would undertake a comprehensive review of the carbon tax
and its impact on British Columbians. The review covered all aspects of the carbon tax, including revenue neutrality, and considered the impact on the competitiveness of British Columbia businesses such as those in the agriculture sector, and in
particular, British Columbias food producers. After the review, the Government of British Columbia confirmed that: it will keep its revenue-neutral carbon tax; the current carbon tax rates and tax base will be maintained; and, revenues will
continue to be returned through tax reductions.



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On April 3, 2008, the Government of British Columbia introduced the Greenhouse Gas Reduction (Cap and
Trade) Act (the Cap and Trade Act), which received royal assent on May 29, 2008 and partially came into force by regulation of the Lieutenant Governor in Council. It sets a province-wide target of a 33 percent
reduction in the 2007 level of GHG emissions by 2020 and an 80 percent reduction by 2050. Unlike the emissions intensity approach taken by the Government of Canada and the Government of Alberta, the Cap and Trade Act establishes an absolute cap
on GHG emissions. The Reporting Regulation, implemented under the authority of the Cap and Trade Act, sets out the requirements for the reporting of the GHG emissions from facilities in British Columbia emitting 10,000 tonnes or more of
carbon dioxide equivalent emissions per year beginning on January 1, 2010. Those reporting operations with emissions of 25,000 tonnes or greater are required to have emissions reports verified by a third party. Recent amendments to the Cap and
Trade Act repealed past requirements on public-sector organizations, including Crown corporations, to be carbon neutral by 2010, and they are now only required to produce annual carbon reduction plans and reports. Additional regulations that
will further enable the Government of British Columbia to implement a cap and trade system are currently under development.

Penn Wests linear
facility in British Columbia is covered by the Cap and Trade Act. We anticipate that we will have two facilities over the 25,000 tonne threshold, one facility between the 10,000 and 25,000 tonnes threshold, and 16 facilities between the 1,000
and 10,000 tonnes threshold. In addition, we have working interests in several non-operated facilities that are subject to the Cap and Trade Act. As at the date hereof, we do not believe that our financial obligations associated with the
reporting and verification requirements under the Cap and Trade Act are material.

Saskatchewan

On May 11, 2009, the Government of Saskatchewan announced The Management and Reduction of Greenhouse Gases Act (the MRGGA) to regulate
GHG emissions in the province. The MRGGA received Royal Assent on May 20, 2010 and will come into force on proclamation. The MRGGA establishes a framework for achieving the provincial target of a 20 percent reduction in GHG emissions from
2006 levels by 2020. Although the MRGGA and related regulations have yet to be proclaimed in force, draft versions indicate that the Government of Saskatchewan will permit the use of pre-certified investment credits, early action credits and
emissions offsets in compliance, similar to the federal climate change initiatives. It remains unclear whether the scheme implemented by the MRGGA will be based on emissions intensity or an absolute cap on emissions.

Manitoba

The Government of Manitoba commenced
public consultations with respect to the development of a cap and trade system to reduce GHG emissions in 2010. The enactment of The Climate Change and Emissions Reductions Act(Manitoba) set emission reduction targets as of December 31,
2012 at 6 percent below 1990 emissions and details the commitment of the Government of Manitoba to various initiatives in an effort to reduce GHG emissions. On December 3, 2015, the Government of Manitoba announced Manitobas Climate
Change and Green Energy Action Plan to address climate change and create green jobs. One component of this plan involves cutting GHG emissions by one-third of its 2005 levels by 2030, in part by implementing a cap and trade program for large
emitters. Following this announcement, on December 7, 2015, the Government of Manitoba announced that it has signed a memorandum of understanding with both Ontario and Quebec formalizing the intent of all three provinces to link their respective
cap-and-trade systems. However, no legislation has been enacted to implement the initiatives outlined in Manitobas Climate Change and Green Energy Action Plan or the memorandum of understanding.

Penn West and the Environment

Penn West understands its
responsibilities for reducing the environmental impacts from its operations and recognizes the interests of other land users in resource development areas, and conducts its operations accordingly. Penn West is committed to mitigating the
environmental impact from its operations, and to involving stakeholders throughout the exploration, development, production and abandonment process. Penn Wests environmental programs encompass resource conservation, stakeholder communication
and site abandonment/reclamation. Our environmental programs are monitored to ensure they comply with all government environmental regulations and with Penn Wests own environmental policies. The results of these programs are reviewed with
Penn Wests management and operations personnel.

Penn West maintains a program of detailed inspections, audits and field assessments to determine
and quantify the environmental liabilities that will be incurred during the eventual decommissioning and reclamation of its field facilities.



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Penn West pursues a program of environmental impact reduction aimed at minimizing these future corporate liabilities without hampering field productivity. This program, launched in 1994, is
ongoing, and includes measures to remediate potential contaminant sources, reclaim spill sites and abandon unproductive wells and shut-in facilities.

Penn West does not operate any facilities in Alberta that are regulated to reduce GHG emissions and has no facilities that are required to report their
emissions. Penn West has minor working interests in several non-operated facilities that are required to meet the requirements of the Alberta GHG regulations. All of Penn Wests fuel use in British Columbia is subject to a carbon tax
based on consumption. Penn West is required to report its emissions in British Columbia and expects to have reduction requirements under a cap and trade system when implemented. Penn Wests financial obligations related to compliance with
existing federal and provincial legislation regarding GHG emissions is not material at this time.

Because the federal and provincial programs
relating to the regulation of the emission of GHGs and other air pollutants continue to be developed, Penn West is currently unable to predict the total impact of the potential regulations upon its business. Therefore, it is possible that Penn West
could face increases in costs in order to comply with emissions legislation. However, in cooperation with the Canadian Association of Petroleum Producers, Penn West continues to work cooperatively with governments to develop an approach to deal with
climate change issues that protects the industrys competitiveness, limits the cost and administrative burden of compliance, and supports continued investment in the oil and gas sector.

Penn West provides additional information in respect of its GHG emissions in the annual international Carbon Disclosure Project, which provides detailed
information regarding our emissions, business strategy, governance and potential risks.

Penn West is committed to meeting its responsibilities to protect
the environment wherever it operates. Penn West anticipates that its expenditures, both capital and expense in nature, will continue to increase as a result of operational growth and increasing legislation relating to the protection of the
environment. Penn West will be taking such steps as required to ensure continued compliance with applicable environmental legislation in each jurisdiction in which it operates. Penn West believes that it is currently in compliance with
applicable environmental laws and regulations in all material respects. Penn West also believes that it is reasonably likely that the trend towards heightened and additional standards in environmental legislation and regulation will continue.

RISK FACTORS

The following is a
summary of certain risk factors relating to the business of Penn West. The following information is a summary only of certain risk factors and is qualified in its entirety by reference to, and must be read in conjunction with, the detailed
information appearing elsewhere in this Annual Information Form. Securityholders and potential securityholders should consider carefully the information contained herein and, in particular, the following risk factors. If any of these risks
occur, our financial condition and results of operations could be materially adversely affected, which could result in a decline in the trading price of our Common Shares. The risks described below are not an exhaustive list of the risks that
may affect our business, nor should they be taken as a complete summary or description of all the risks associated with our business and the oil and natural gas business generally.

Volatility in oil and natural gas prices could have a material adverse effect on our results of operations and financial condition, which in turn could
negatively affect the market price of our Common Shares.

Our results of operations and financial condition are dependent upon the prices that we
receive for the oil and natural gas that we sell. Historically, the oil and natural gas markets have been volatile and are likely to continue to be volatile in the future. Oil and natural gas prices have fluctuated widely during recent
years and are subject to fluctuations in response to changes in supply, demand, market uncertainty and other factors that are beyond our control. These factors include, but are not limited to:



| |  |  | the limitations on the ability of Western Canadian energy producers to export oil, natural gas and natural gas liquids to U.S. markets and world markets and the resulting discount that Western Canadian energy producers
may receive for their products as compared to U.S. and international benchmark commodity prices;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the availability of transportation infrastructure, and in particular:
| | - |  | ---------------------------------------------------------------------



| |  |  | our ability to acquire space on pipelines that deliver crude oil and natural gas to commercial markets or alternatively contract for the delivery of our products by rail;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | deliverability uncertainties related to the distance of our production from existing pipeline, railway line, processing and storage facility infrastructure; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | operational problems affecting the pipelines, railway lines and facilities on which we rely;
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | global energy policy, including the ability of OPEC (and in particular the Kingdom of Saudi Arabia) to set and maintain production levels and influence prices for oil;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | existing and threatened political instability and hostilities;
| | - |  | --------------------------------------------------------------



| |  |  | foreign supply of oil and natural gas, including liquefied natural gas;
| | - |  | -----------------------------------------------------------------------



| |  |  | weather conditions;
| | - |  | -------------------



| |  |  | the overall level of energy demand;
| | - |  | -----------------------------------



| |  |  | production and storage levels of oil and natural gas;
| | - |  | -----------------------------------------------------



| |  |  | government regulations and taxes;
| | - |  | ---------------------------------



| |  |  | currency exchange rates;
| | - |  | ------------------------



| |  |  | the effect of worldwide environmental and/or energy conservation measures;
| | - |  | --------------------------------------------------------------------------



| |  |  | the price and availability of alternative energy supplies;
| | - |  | ----------------------------------------------------------



| |  |  | the overall economic environment in Canada, the U.S., China, emerging markets and globally; and
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | the advent of new technologies.
| | - |  | -------------------------------

Oil prices have declined significantly during recent periods and are expected
to remain volatile and may decline further in the near future as a result of global excess supply due to the increased growth of shale oil production in the United States, the decline in global demand for exported crude oil commodities, OPECs
recent decisions pertaining to the oil production of OPEC member countries and the lifting of sanctions imposed on certain oil producing nations by other countries, among other factors. The economics of producing from some wells may change
because of lower prices, which could result in reduced production of oil or natural gas and a reduction in the volumes and the value of the Corporations reserves. The Corporation might also elect not to produce from certain wells at lower
prices. Volatile oil and natural gas prices make it difficult to estimate the value of producing properties for acquisitions and often cause disruption in the market for oil and natural gas producing properties, as buyers and sellers have
difficulty agreeing on such value. Price volatility also makes it difficult to budget for and project the return on acquisitions and development and exploitation projects.

All these factors could result in a material decrease in the Corporations expected net production revenue and a reduction in its oil and natural gas
acquisition, development and exploration activities. Any substantial and extended decline in the price of oil and natural gas would have an adverse effect on the Corporations carrying value of its reserves, borrowing capacity, revenues,
profitability and cash flows from operations and may have a material adverse effect on the Corporations business, financial condition, results of operations and prospects.

The oil and gas industry is currently in a period of protracted weakness.

Recent market events and conditions, including global excess oil and natural gas supply, recent actions taken by OPEC, slowing growth in China and other
emerging economies, market volatility and disruptions in Asia, and sovereign debt levels in various countries, have caused significant weakness and volatility in commodity prices. These events and conditions have caused a significant decrease in the
valuation of oil and gas companies and a decrease in confidence in the oil and gas industry. These difficulties have been exacerbated in Canada by the recent changes in government at the federal level and, in the case of Alberta, the provincial
level, and the resultant uncertainty surrounding regulatory, tax and royalty changes that may be implemented by the new governments. In addition, the inability to get the necessary approvals to build pipelines and other facilities to provide better
access to markets for the oil and gas industry in western Canada has led to additional uncertainty and reduced confidence in the oil and gas industry in western Canada. Lower commodity prices may also affect the volume and value of the
Corporations reserves, particularly as certain reserves may become uneconomic. In addition, lower commodity prices have restricted, and are anticipated to continue to restrict, the Corporations cash flow resulting in a reduced capital
expenditure budget. As a result, the Corporation may not be able to replace its production with additional reserves and both the Corporations production and reserves could be reduced on a year over year basis.



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We may not be able to repay all or part of our indebtedness, or alternatively, refinance all or part of our
indebtedness on commercially reasonable terms. We may not be able to comply with the covenants (and in particular the financial covenants) contained in our debt instruments. The occurrence of any one of these events could have a material
adverse effect on our results of operations and financial condition, which in turn could negatively affect the market price of our Common Shares.

We currently have a credit facility in place that has an aggregate borrowing limit of $1.2billion and a maturity date of May 6, 2019. As of
December 31, 2015, there was $689 million of unused capacity under our credit facility. In the event that our credit facility is not extendedbefore the maturity date, all outstanding indebtedness under such tranche will be
repayable at that date. There is also a risk that our credit facility will not be renewed for the same principal amount or on the same terms. Any of these events could adversely affect our ability to fund our ongoing operations.

We also currently have Senior Notes outstanding that are comprised of US$937 million principal amount of notes, Cdn$73 million principal amount of notes,
£49 million principal amount of notes and 6 million principal amount of notes, which Senior Notes have maturity dates ranging between 2016 and 2025. In the event we are unable to repay or refinance these debt obligations (or if we must
refinance these debt obligations on less favourable terms) it may adversely affect our ability to fund our ongoing operations.

We are required to comply
with covenants under our credit facilities and Senior Notes. In the event that we do not comply with covenants under one or more of these debt instruments, our access to capital could be restricted or repayment could be required, which could
adversely affect our ability to fund our ongoing operations.

In May, 2015, the Company reached agreements with the lenders under its syndicated bank
facility and with the holders of its Senior Notes to, among other things, amend the financial covenants in the bank facility and Senior Notes and temporarily grant floating charge security over all of its property in favour of the lenders and the
noteholders on a pari pasu basis. As a result, if the Company is unable to repay amounts owing under our credit facilities and Senior Notes, the lenders under the credit facilities and/or the holders of the Senior Notes could proceed to
foreclose or otherwise realize upon the collateral granted to them to secure the indebtedness. The acceleration of our indebtedness under one agreement may permit acceleration of indebtedness under other agreements that contain cross default or
cross-acceleration provisions.

The price of oil and natural gas is affected by political events throughout the world. Any such event could
result in a material decline in commodity prices and in turn result in a reduction in the market price of our Common Shares.

Political events
throughout the world that cause disruptions in the supply of oil continue to affect the marketability and price of oil and natural gas acquired or discovered by us. Conflicts, or conversely peaceful developments, arising in North Africa, the
Middle East and other areas of the world have a significant impact on the price of oil and natural gas. Any particular event could result in a material decline in prices and therefore result in a reduction of our revenue and consequently the
market price of our Common Shares.

In addition, our oil and natural gas properties, wells and facilities could be subject to a terrorist attack. If
any of our properties, wells or facilities are the subject of a terrorist attack it could have a material adverse effect on us. We do not currently have insurance to protect against the risk of terrorism.

We cannot predict the impact of changing demand for oil and natural gas products.

Fuel conservation measures, alternative fuel requirements, increasing consumer demand for alternatives to oil and natural gas, and technological advances in
fuel economy and energy generation devices could reduce the demand for oil, natural gas and other liquid hydrocarbons. We cannot predict the impact of changing demand for oil and natural gas products, and any major changes may have a material
adverse effect on our business, financial condition, results of operations and cash flows.

Acquiring, exploring for, developing, and producing from
oil and natural gas assets involves many risks. Losses resulting from the occurrence of one or more of these risks may adversely affect our business and thus the value of our Common Shares.

Oil and natural gas operations involve many risks that even a combination of experience, knowledge and careful evaluation may not be able to
overcome. The long-term commercial success of Penn West depends on our ability to find, acquire, develop and commercially produce oil and natural gas reserves. Without the continual addition of new
reserves, our existing reserves, and the production from them, will decline over time as we produce from such reserves. A future increase in our reserves will depend on both our ability to explore and develop our existing properties and on our
ability to select and acquire suitable producing properties or prospects. There is no assurance that we will be able to continue to find satisfactory properties to acquire or participate in. Moreover, management of Penn West may determine
that current markets, terms of acquisition, participation or pricing conditions make potential acquisitions or participations uneconomic. There is also no assurance that we will discover or acquire further commercial quantities of oil and
natural gas.



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Future oil and natural gas exploration may involve unprofitable efforts from dry wells as well as from wells that
are productive but do not produce sufficient petroleum substances to return a profit after drilling, completing (including hydraulic fracturing), operating and other costs. Completion of a well does not assure a profit on the investment or
recovery of drilling, completion and operating costs.

Drilling hazards, environmental damage and various field operating conditions could greatly increase
the cost of operations and adversely affect the production from successful wells. Field operating conditions include, but are not limited to, delays in obtaining governmental approvals or consents,
shut-ins of connected wells resulting from extreme weather conditions, insufficient storage or transportation capacity or other geological and mechanical conditions. While diligent well supervision and
effective maintenance operations can contribute to maximizing production rates over time, it is not possible to eliminate production delays and declines from normal field operating conditions, which can negatively affect revenue and cash flow levels
to varying degrees.

Acquiring, exploring for, developing, and producing from oil and natural gas assets involves many risks. These risks include,
but are not limited to:



| |  |  | encountering unexpected formations or pressures;
| | - |  | ------------------------------------------------



| |  |  | premature declines of reservoirs;
| | - |  | ---------------------------------



| |  |  | the invasion of water into producing formations;
| | - |  | ------------------------------------------------



| |  |  | blowouts, explosions, equipment failures and other accidents;
| | - |  | -------------------------------------------------------------



| |  |  | sour gas releases;
| | - |  | ------------------



| |  |  | uncontrollable flows of oil, natural gas or well fluids;
| | - |  | --------------------------------------------------------



| |  |  | personal injury to staff and others;
| | - |  | ------------------------------------



| |  |  | adverse weather conditions, such as wild fires and flooding; and
| | - |  | ----------------------------------------------------------------



| |  |  | pollution and other environmental risks, such as fires and spills.
| | - |  | ------------------------------------------------------------------

These typical risks and hazards could
result in substantial damage to oil and natural gas wells, production facilities, other property, the environment and personal injury. Particularly, we may explore for and produce sour natural gas in certain areas. An unintentional leak of
sour natural gas could result in personal injury, loss of life or damage to property and may necessitate an evacuation of populated areas, all of which could result in liability to us. Losses resulting from the occurrence of any of these risks
may have a material adverse effect on our business, financial condition, results of operations and prospects.

Although we maintain insurance in
accordance with customary industry practice based on our projected cost benefit analysis of maintaining such insurance, we are not fully insured against all of these risks, not all risks are insurable, and liabilities associated with certain risks
could exceed policy limits or not be covered. Like other oil and natural gas companies, we attempt to conduct our business and financial affairs so as to protect against political and economic risks applicable to operations in the jurisdictions
where we operate, but there can be no assurance that we will be successful in so protecting our assets.

Fluctuations in foreign currency exchange
rates and interest rates could adversely affect our business, and adversely affect the market price of our Common Shares.

World oil and natural
gas prices are denominated in United States dollars and the Canadian dollar price received by Canadian producers is therefore affected by the Canadian/U.S. dollar exchange rate, which fluctuates over time. Material increases in the value of the
Canadian dollar relative to the United States dollar will negatively affect, among other things, our oil production revenues in Canadian dollars. We generally fund our cash costs, in Canadian dollars. Strengthening of the Canadian dollar
(excluding risk management activities) against the United States dollar negatively affects the amount of Canadian dollar funds available to us for reinvestment, and negatively affects the future value of our reserves as calculated by independent
evaluators.



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To the extent that the Corporation engages in risk management activities related to foreign exchange rates, there
is a credit risk associated with counterparties with which the Corporation may contract.

An increase in interest rates could result in a significant
increase in the amount we pay to service debt, resulting in a reduced amount available to fund our exploration and development activities which could negatively impact the market price of the Common Shares.

We may be unable to successfully compete with other companies in our industry, which could negatively affect the market price of our Common Shares.

There is strong competition relating to all aspects of the oil and gas industry. We compete with numerous other exploration and production
companies (some of whom have substantially greater financial resources, staff and facilities than those of the Corporation) for, among other things:



| |  |  | resources, including capital and skilled personnel;
| | - |  | ---------------------------------------------------



| |  |  | the acquisition of properties with longer life reserves and exploitation and development opportunities; and
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | access to equipment, markets, transportation capacity, drilling and service rigs and processing facilities.
| | - |  | -----------------------------------------------------------------------------------------------------------

If we are unable to acquire or develop additional reserves, the value of our Common Shares will decline.

Absent equity capital injections, increased debt levels or the efficient deployment of capital investments by us, our production levels and reserves will
decline over time.

Our future oil and natural gas reserves and production, and therefore our cash flow, will be highly dependent on our success in
exploring and exploiting our reserves and land base and acquiring additional reserves. Without reserve additions through acquisition, exploration or development activities, our reserves and production will decline over time as our existing
reserves are depleted.

To the extent that external sources of capital, including the issuance of additional Common Shares, become limited or unavailable,
our ability to make the necessary capital investments to maintain or expand our oil and natural gas reserves may be impaired.

There can be no assurance
that we will be successful in developing or acquiring additional reserves on terms that meet our investment objectives.

We may experience
challenges adopting new technologies and our costs may increase as a result of such adoption.

The oil and gas industry is characterized by rapid
and significant technological advancements and introductions of new products and services utilizing new technologies. Other oil and gas companies may have greater financial, technical and personnel resources that allow them to enjoy technological
advantages and may in the future allow them to implement new technologies before we do. There can be no assurance that we will be able to respond to such competitive pressures and implement such technologies on a timely basis or at an acceptable
cost. One or more of the technologies currently utilized by us or implemented in the future may become obsolete. In such case, our business, financial condition and results of operations could be materially adversely affected. If we are unable to
utilize the most advanced commercially available technology, our business, financial condition and results of operations could be materially adversely affected.

We are participating in some large projects and have more concentrated risks in these areas of our operations.

We manage a variety of small and large projects in the conduct of our business. Project delays may delay expected revenues from operations. Significant
project cost over-runs could make a project uneconomic. Our ability to execute projects and market oil and natural gas depends upon numerous factors beyond our control, including:



| |  | the availability of processing capacity;
|- |  | ----------------------------------------



| |  | the availability and proximity of transportation infrastructure;
|- |  | ----------------------------------------------------------------



| |  | the availability of storage capacity;
|- |  | -------------------------------------



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| |  | the availability of, and the ability to acquire, water supplies needed for drilling and hydraulic fracturing, or our ability to dispose of water used or removed from strata at a reasonable cost and in accordance
applicable environmental regulations;
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | the supply of and demand for oil and natural gas;
|- |  | -------------------------------------------------



| |  | the availability of alternative fuel sources;
|- |  | ---------------------------------------------



| |  | the effects of inclement weather;
|- |  | ---------------------------------



| |  | the availability of drilling and related equipment;
|- |  | ---------------------------------------------------



| |  | unexpected cost increases;
|- |  | --------------------------



| |  | accidental events;
|- |  | ------------------



| |  | currency fluctuations;
|- |  | ----------------------



| |  | changes in regulations;
|- |  | -----------------------



| |  | the availability and productivity of skilled labour; and
|- |  | --------------------------------------------------------



| |  | the regulation of the oil and natural gas industry by various levels of government and governmental agencies.
|- |  | -------------------------------------------------------------------------------------------------------------

Because of these factors, we could be unable to execute projects on time, on budget, or at all, and may not be able to effectively market the oil and natural
gas that we produce.

The incorrect assessment of value at the time of acquisitions could adversely affect the value of our Common Shares.

Acquisitions of oil and gas properties or companies will be based in large part on engineering and economic assessments made by independent
engineers. These assessments include a series of assumptions regarding such factors as recoverability and marketability of oil and gas, future prices of oil and gas and operating costs, future capital expenditures and royalties and other
government levies which will be imposed over the producing life of the reserves. Many of these factors are subject to change and are beyond our control. All such assessments involve a measure of geological and engineering uncertainty that
could result in lower production and reserves than anticipated. If actual reserves or production are less than we expect, our revenues and consequently the value of our Common Shares could be negatively affected.

Seasonal factors and unexpected weather patterns (including wild fires and flooding) may lead to declines in our activities and thereby adversely affect
our business, and the market price of our Common Shares.

The level of activity in the Canadian oil and gas industry is influenced by seasonal
weather patterns. Wet weather and spring thaw may make the ground unstable. Consequently, municipalities and provincial transportation departments enforce road bans that restrict the movement of rigs and other heavy equipment, thereby
reducing activity levels. Also, certain oil and gas producing areas are located in areas that are inaccessible other than during the winter months because the ground surrounding the sites in these areas consists of swampy terrain.

Our operations are susceptible to the impacts of wild fires and flooding. In recent years, our production levels (and as a result our revenues) have at
times been materially and adversely affected by wild fires and flooding. In addition to the loss of revenue that results from the loss of production, when our operations are affected by wild fires and/or flooding, we incur expenses responding
to such events, repairing damaged equipment, and resuming operations. Although our insurance policies may compensate us for part of our losses, they will not compensate us for all of our losses. In addition, wild fires and/or flooding
consume both financial resources and management and employee time that would otherwise be directed towards the development of our business and the pursuit of our business strategy. We can offer no assurance that the severe wild fires and
flooding that have at times plagued our operations in recent years will not occur again in the future with equal or greater severity.

Seasonal factors and
unexpected weather patterns, including wild fires and flooding, may lead to material declines in our exploration, development and production activities and may consume material amounts of our financial and human resources, and thereby materially and
adversely affect our results of operations and financial condition.



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We use conventional recovery methods, such as horizontal multi-stage fracturing technology, and
non-conventional recovery methods, such as enhanced oil recovery technologies, both of which are subject to significant risk factors which could lead to the delay or cancellation of some or all of our projects, which could adversely affect the
market price of our Common Shares.

Penn West utilizes new drilling and completion technologies, including horizontal multi-stage fracture
completions, intended to increase the resource recovery from known oil and natural gas fields. However, Penn West may not realize the anticipated increase in resource recovery from the employment of such techniques due to particular reservoir
characteristics or other adverse factors.

Hydraulic fracturing typically involves the injection of water, sand and small amounts of additives under
pressure into rock formations to stimulate hydrocarbon (natural gas and oil) production. Hydraulic fracturing is being used to produce commercial quantities of natural gas and oil from reservoirs that were previously unproductive. Any new laws,
regulations or permitting requirements regarding hydraulic fracturing could lead to operational delay or increased operating costs or third party or governmental claims, and could increase our cost of compliance and doing business as well as delay
the development of oil and natural gas resources from shale formations which are not commercial without the use of hydraulic fracturing. Restrictions on hydraulic fracturing could also reduce the amount of oil and natural gas that we are
ultimately able to produce from our reserves.

Due to recent seismic activity reported in the Fox Creek area of Alberta, the Alberta Energy Regulator has
announced new seismic monitoring and reporting requirements for hydraulic fracturing operators in the Duvernay Zone in the Fox Creek area. These requirements include, among others, an assessment of the potential for seismicity prior to operations,
the implementation of a response plan to address potential events, and the suspension of operations if a seismic event above a particular threshold occurs. The Alberta Energy Regulator continues to monitor seismic activity around the province and
may extend these requirements to other areas of the province if necessary.

The potential or planned use of enhanced oil recovery (EOR)
methods such as steam injection (steam assisted gravity drainage, cyclical steam stimulation and steam flooding), water injection, solvent injection and firefloods to increase the ultimate recovery of oil resources in place are subject to
significant risk factors. These factors include but are not limited to the following:



| |  |  | changing economic conditions (including commodity pricing and operating and capital expenditure fluctuations);
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | changing engineering and technical conditions (including the ability to apply EOR methods to the reservoir and the production response thereto);
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | large development programs may need to be spread over a longer time period than initially planned due to the requirement to allocate capital expenditures to different periods;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | surface access and deliverability issues (including landowner and stakeholder relations, weather, pipeline, road and processing matters);
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | environmental regulations relating to such items as GHG emissions and access to water, which could impact capital and operating costs; and
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the availability of sufficient financing on acceptable terms.
| | - |  | -------------------------------------------------------------

The use or potential or planned use of CO2 miscible flooding to increase the oil recovery from large legacy oil pools is subject to significant risk factors which could lead to the delay or cancellation of some or all of these projects.
These factors include, but are not limited to:



| |  |  | the existence of commercial scale CO2supply and infrastructure (including the ability to capture and transport the miscible agent to us at an economic cost);
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | changing economic conditions (including commodity pricing and operating and capital expenditure fluctuations);
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | changing engineering and technical conditions (including the ability to apply CO2EOR methods to the reservoir and the production response thereto);
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | large development programs may need to be spread over a longer time period than planned due to capital allocation requirements;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------



| |  |  | the need to obtain required approvals from regulatory authorities from time to time;
| | - |  | ------------------------------------------------------------------------------------



| |  |  | surface access and deliverability issues (including weather, pipeline, road and processing matters);
| | - |  | ----------------------------------------------------------------------------------------------------



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| |  |  | the availability of sufficient financing on acceptable terms;
| | - |  | -------------------------------------------------------------



| |  |  | changing regulatory frameworks, which could impact our long-term storage liability and our monitoring, measurement and verification costs on CO2 miscible flood
projects;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | changing royalty structures which may impact CO2 flood economics; and
| | - |  | ---------------------------------------------------------------------



| |  |  | the potential for out-of-zone and wellbore leakage which could delay or cause the cancellation of some or all of these projects.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------

We suspended our quarterly dividend in 2015 and there can be no assurance that we will resume making dividend payments in the future.

The Board suspended our quarterly dividend until further notice following the dividend payment made on October 15, 2015. The payment of dividends in
the future will be dependent on, among other things, the cash flow, results of operations and financial condition of the Corporation, the need for funds to finance ongoing operations, and other considerations as the Board considers
relevant. There can be no assurance that we will resume making dividend payments in the future or, if we do, the amount of dividend payments that we will make.

Actual reserves will vary from reserves estimates and those variations could be material and negatively affect the market price of our Common Shares.

There are numerous uncertainties inherent in estimating quantities of oil, natural gas and natural gas liquid reserves and resources and cash
flow to be derived therefrom, including many factors beyond our control. The reserve and associated revenue information set forth herein represents estimates only. In general, estimates of economically recoverable oil and natural gas
reserves and resources and the future net revenuetherefrom are based upon a number of variable factors and assumptions, such as:



| |  |  | historical production from the properties;
| | - |  | ------------------------------------------



| |  |  | estimated production decline rates;
| | - |  | -----------------------------------



| |  |  | estimated ultimate recovery of reserves;
| | - |  | ----------------------------------------



| |  |  | changes in technology;
| | - |  | ----------------------



| |  |  | timing and amount and effectiveness of future capital expenditures;
| | - |  | -------------------------------------------------------------------



| |  |  | marketability and price of oil and natural gas;
| | - |  | -----------------------------------------------



| |  |  | royalty rates;
| | - |  | --------------



| |  |  | the assumed effects of regulation by governmental agencies; and
| | - |  | ---------------------------------------------------------------



| |  |  | future operating costs;
| | - |  | -----------------------

all of which may vary materially from actual results. As a result, estimates of
the economically recoverable oil and natural gas reserves or estimates of resources attributable to any particular group of properties, classification of such reserves based on risk of recovery and estimates of future net revenues expected therefrom
prepared by different engineers, or by the same engineers at different times, may vary. Our actual production, revenues and development and operating expenditures will vary from reserve and resource estimates thereof and such variations could
be material.

Estimates of proved reserves that may be developed and produced in the future are sometimes based upon volumetric calculations and upon
analogy to similar types of reserves rather than actual production history. Estimates based on these methods are generally less reliable than those based on actual production history. Subsequent evaluation of the same reserves based upon
production history and production practices will result in variations in the estimated reserves and such variations could be material.

In accordance with
applicable securities laws, Sproulehas used forecast price and cost estimates in calculating reserve quantities included herein. Actual future net revenuewill be affected by other factors including but not limited to actual
production levels, supply and demand for oil and natural gas, curtailments or increases in consumption by oil and natural gas purchasers, changes in governmental regulation or taxation and the impact of inflation on costs.

Actual production and revenuederived from the Corporations reserves will vary from the reserve estimates contained in the Engineering Report
summarized herein, and such variations could be material. The Engineering Report summarized herein is based in part on the assumption that certain activities will be undertaken by us in future years and the further assumption that



49



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such activities will be successful. The reserves and estimated revenue to be derived therefrom contained in the Engineering Report summarized herein will be reduced in future years to the
extent that such activities are not undertaken or, if undertaken, do not achieve the level of success assumed in the Engineering Report summarized herein. The reserves evaluation described herein is effective as of a specific date and, except
as otherwise noted, has not been updated and thus does not reflect changes in our reserves since that date.

Our operation of oil and natural gas
wells, and our participation in oil and natural gas wells operated by others, could subject us to environmental claims and liability and/or increased compliance costs, all of which could affect the market price of our Common Shares.

All phases of the oil and natural gas business present environmental risks and hazards and are subject to environmental regulation pursuant to a variety of
federal, provincial and local laws and regulations. Environmental legislation provides for, among other things, restrictions and prohibitions on spills, releases or emissions of various substances produced in association with oil and natural gas
operations. In addition, such legislation sets out requirements with respect to oilfield waste handling and storage, habitat protection and the satisfactory operation, maintenance, abandonment and reclamation of well and facility sites. Compliance
with environmental legislation can require significant expenditures and a breach of such requirements may result in suspension or revocation of necessary licenses and authorizations, civil liability for pollution damage and the imposition of fines
and penalties, some of which may be material. Environmental legislation is evolving in a manner expected to result in stricter standards and enforcement, larger fines and legal liability, and potentially increased capital expenditures and operating
costs. The discharge of oil, natural gas or other pollutants into the air, soil or water may give rise to liabilities to governments and third parties and may require us to incur costs to remedy such discharge. Although we believe that we will be in
material compliance with current applicable environmental legislation, no assurance can be given that environmental laws will not result in a curtailment of production or a material increase in the costs of production, development or exploration
activities or otherwise have a material adverse effect on our business, financial condition, results of operations and prospects. See Industry Conditions.

Our hedging program subjects us to certain risk.

From time to time, the Corporation may enter into agreements to receive fixed prices on its oil and natural gas production to offset the risk of revenue
losses if commodity prices decline. However, to the extent that the Corporation engages in price risk management activities to protect itself from commodity price declines, it may also be prevented from realizing the full benefits of price
increases above the levels of the derivative instruments used to manage price risk. In addition, the Corporations hedging arrangements may expose it to the risk of financial loss in certain circumstances, including instances in which:



| |  |  | production falls short of the hedged volumes or prices fall significantly lower than projected;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | there is a widening of price-basis differentials between delivery points for production and the delivery point assumed in the hedge arrangement;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the counterparties to the hedging arrangements or other price risk management contracts fail to perform under those arrangements; or
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------



| |  |  | a sudden unexpected event materially impacts oil and natural gas prices.
| | - |  | ------------------------------------------------------------------------

Similarly, from time to time the
Corporation may enter into agreements to fix the exchange rate of Canadian to United States dollars or other currencies in order to offset the risk of revenue losses if the Canadian dollar increases in value compared to other currencies. However, if
the Canadian dollar declines in value compared to such fixed currencies, the Corporation will not benefit from the fluctuating exchange rate.

We
may not be able to achieve the anticipated benefits of acquisitions or dispositions and the integration of acquisitions may result in the loss of key employees and the disruption of on-going business relationships.

We make acquisitions and dispositions of businesses and assets in the ordinary course of business. Achieving the benefits of acquisitions depends in part
on successfully consolidating functions and integrating operations and procedures in a timely and efficient manner, as well as our ability to realize the anticipated growth opportunities and synergies from combining the acquired businesses and
operations with ours. The integration of acquired businesses may require substantial management effort, time and resources and may divert managements focus from other strategic opportunities and operational matters, and



50



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may also result in the loss of key employees, the disruption of on-going business, supplier, customer and employee relationships and deficiencies in internal controls or information technology
controls. We continually assess the value and mix of our assets in light of our business plans and strategic objectives. In this regard, non-core assets are periodically disposed of so that we can focus our efforts and resources more
efficiently. Depending on the state of the market for such non-core assets, certain of our non-core assets, if disposed of, could be expected to realize less than their carrying value in our financial statements.

We may incur additional indebtedness in the future.

From time to time, we may enter into transactions to acquire assets or shares of other organizations. These transactions may be financed in whole or in
part with debt, which may increase our debt levels above industry standards for oil and natural gas companies of similar size. Depending on future exploration and development plans, we may require additional debt financing that may not be
available or, if available, may not be available on favourable terms. Neither our articles nor our by-laws limit the amount of indebtedness that we may incur.The level of our indebtedness
from time to time could impair our ability to obtain additional financing on a timely basis to take advantage of business opportunities that may arise, and may adversely affect the market price of our Common Shares if investors consider our debt
levels to be higher than that of our peers.

Canadian and United States practices differ in reporting reserves and production and our estimates may
not be comparable to those of companies in the United States.

In this Annual Information Form, we report our production and reserve quantities in
accordance with Canadian practices and specifically in accordance with NI 51-101. These practices are different from the practices used to report production and to estimate reserves in reports and
other materials filed with the SEC by United States companies. Nevertheless, as part of Penn Wests Form 40-F for the year ended December 31, 2015 filed with the SEC, Penn West has disclosed proved reserves quantities using the standards
contained in SEC Regulation S-X, and the standardized measure of discounted future net cash flows relating to proved oil and gas reserves determined in accordance with the U.S. Financial Accounting Standards Board, Disclosures About Oil and
Gas Producing Activities, which disclosure complies with the SECs rules for disclosing oil and gas reserves.

Our ability to make future
capital expenditures may depend on our ability to access third party financing.

The Corporation anticipates making substantial capital
expenditures for the acquisition, exploration, development and production of oil and natural gas reserves in the future. As future capital expenditures will be financed out of cash generated from operations, borrowings and possible future
equity sales, the Corporations ability to do so is dependent on, among other factors:



| |  |  | the overall state of the capital markets;
| | - |  | -----------------------------------------



| |  |  | the Corporations credit rating (if applicable);
| | - |  | ------------------------------------------------



| |  |  | commodity prices;
| | - |  | -----------------



| |  |  | interest rates;
| | - |  | ---------------



| |  |  | royalty rates;
| | - |  | --------------



| |  |  | tax burden due to current and future tax laws; and
| | - |  | --------------------------------------------------



| |  |  | investor appetite for investments in the energy industry and the Corporations securities in particular.
| | - |  | --------------------------------------------------------------------------------------------------------

Further, if the Corporations revenues or reserves decline, it may not have access to the capital necessary to undertake or complete future drilling
programs. The current conditions in the oil and gas industry have negatively impacted the ability of oil and gas companies to access additional financing. There can be no assurance that debt or equity financing, or cash generated by operations,
will be available or sufficient to meet these requirements or for other corporate purposes or, if debt or equity financing is available, that it will be on terms acceptable to the Corporation. The Corporation may be required to seek additional
equity financing on terms that are highly dilutive to existing shareholders. The inability of the Corporation to access sufficient capital for its operations could have a material adverse effect on the Corporations business financial
condition, results of operations and prospects.



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A lack of access to capital could harm our financial condition and results of operations.

The Corporations cash flow from its reserves may not be sufficient to fund its ongoing activities at all times and from time to time, the Corporation
may require additional financing in order to carry out its oil and natural gas acquisition, exploration and development activities. Failure to obtain financing on a timely basis could cause the Corporation to forfeit its interest in certain
properties, miss certain acquisition opportunities, and/or reduce or terminate its operations. Due to the conditions in the oil and gas industry and/or global economic volatility, the Corporation may from time to time have restricted access to
capital and increased borrowing costs. The current conditions in the oil and gas industry have negatively impacted the ability of oil and gas companies to access additional financing.

Continued depressed oil and natural gas prices have caused decreases, and may cause further decreases, in the Corporations revenues from its reserves,
which may affect the Corporations ability to expend the necessary capital to replace its reserves or to maintain its production. To the extent that external sources of capital become limited, unavailable or available on onerous terms, the
Corporations ability to make capital investments and maintain existing assets may be impaired, and its assets, liabilities, business, financial condition and results of operations may be affected materially and adversely as a result. In
addition, the future development of the Corporations petroleum properties may require additional financing and there are no assurances that such financing will be available or, if available, will be available upon acceptable
terms. Alternatively, any available financing may be highly dilutive to existing shareholders. Failure to obtain any financing necessary for the Corporations capital expenditure plans may result in a delay in development or
production on the Corporations properties, or may force the Corporation to divest of certain assets that it would otherwise not sell.

Changes
to royalty regimes may have a material and adverse impact on our financial condition.

There can be no assurance that the federal government and
the provincial governments of the western provinces will not adopt a new, or modify the existing, royalty regime, which in each case may have an impact on the economics of our projects. An increase in royalties would reduce our earnings and could
make future capital investments, or our operations, less economic. On January 29, 2016, the Government of Alberta adopted a new royalty regime which will take effect on January 1, 2017. On March 8, 2016, the government indicated that it would
proceed to reform the existing royalty regime in line with the recommendations of the Alberta Royalty Review Panel through legislation to be introduced in the current session. See Industry Conditions - Royalties and
Incentives.

We depend upon our management and other key personnel and the loss of one or more of such individuals could negatively affect
our business.

Shareholders depend upon the management of Penn West in respect of the administration and management of all matters relating to our
operations. The success of our operations depends largely upon the skills and expertise of our senior management and other key personnel. Our continued success depends upon our ability to retain and recruit such personnel. Investors
who are not willing to rely on the management of Penn West should not invest in our securities.

Changes in the regulation of the oil and gas
industry may adversely affect our business.

Various levels of governments impose extensive controls and regulations on oil and natural gas
operations (including exploration, development, production, pricing, marketing and transportation). Governments may regulate or intervene with respect to exploration and production activities, prices, taxes, royalties and the exportation of oil
and natural gas. Amendments to these controls and regulations may occur from time to time in response to economic or political conditions. See Industry Conditions. The implementation of new regulations or the
modification of existing regulations affecting the oil and natural gas industry could reduce demand for crude oil and natural gas and increase our costs, either of which may have a material adverse effect on our business, financial condition,
results of operations and prospects. In order to conduct oil and natural gas operations, we will require regulatory permits, licenses, registrations, approvals and authorizations from various governmental authorities. There can be no
assurance that we will be able to obtain all of the permits, licenses, registrations, approvals and authorizations that may be required to conduct operations that we may wish to undertake. In addition to regulatory requirements pertaining to
the production, marketing and sale of oil and natural gas mentioned above, our business and financial condition could be influenced by federal legislation affecting, in particular, foreign investment, through legislation such as the Competition
Act (Canada) and the Investment Canada Act(Canada).



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The failure of third parties to meet their contractual obligations to us may have a material adverse effect
on our financial condition.

We may be exposed to third party credit risk through our contractual arrangements with our current or future joint
venture partners, marketers of our petroleum and natural gas production and other parties. In addition, we may be exposed to third party credit risk from operators of properties in which we have a working or royalty interest. In the event such
entities fail to meet their contractual obligations to us, such failures may have a material adverse effect on our business, financial condition, results of operations and prospects. In addition, poor credit conditions in the industry and of
joint venture partners may affect a joint venture partners willingness to participate in our ongoing capital program, potentially delaying the program and the results of such program until we find a suitable alternative partner. To the
extent that any of such third parties go bankrupt, become insolvent or make a proposal or institute any proceedings relating to bankruptcy or insolvency, it could result in the Corporation being unable to collect all or a portion of any money owing
from such parties. Any of these factors could materially adversely affect our financial and operational results.

In the normal course of
our operations, we are exposed to litigation, which if determined adversely, could have a material and adverse impact on us.

In the normal course
of our operations, we may become involved in, named as a party to, or be the subject of, various legal proceedings, including regulatory proceedings, tax proceedings and legal actions, related to personal injuries, property damage, property tax,
land rights, the environment, securities law matters (such as our public disclosures), and contract disputes. The outcome of outstanding, pending or future proceedings cannot be predicted with certainty and may be determined adversely to us and
as a result, could have a material adverse effect on our assets, liabilities, business, financial condition and results of operations.

The
settlement of all class action proceedings in Canada and the United States against the Company may not be not completed.

On February 16,
2016, Penn West announced that it had entered into agreements to settle all class action proceedings in Canada and the United States against Penn West and others commenced by investors alleging damages in relation to Penn Wests July 29,
2014 announcement that it intended to restate certain historical financial statements and related management discussion and analysis. The settlement agreements provide for a payment that will be fully funded by insurance coverage maintained by
Penn West. As a result, the payment will not impact Penn Wests cash resources or financial position.

The proposed settlements are subject to
the satisfaction of the conditions stated in the settlement documents as well as the receipt of court approval in each of Alberta, Ontario and Quebec and in New York. There can be no assurance that these conditions will be satisfied or that the
settlements will be approved by the courts. The receipt of such court approvals is dependent on a number of factors and therefore the timing thereof cannot be predicted at this time.

If the settlement conditions are not satisfied or approval is not obtained from all courts as required, then the class actions will proceed and, while the
Company intends to dispute and defend against such actions, due to the inherent uncertainties of litigation and the early stage of the proceedings before settlement, it is not possible to predict the final outcome of these actions or determine the
amount of the Companys potential losses, if any.

In addition, the settlement agreements provide that class members may opt out of the
settlements, thus disentitling themselves from sharing in the settlement but likewise preserving their ability to sue the Company for their individual losses. While the Company has directors and officers insurance applicable in these
circumstances, that insurance is subject to certain policy limits, exclusions and deductibles so the Company cannot offer any assurance that such insurance would apply or that the amount of coverage would be sufficient to satisfy any amount that the
Company is required or determines to pay in connection with the class actions. In the event that a significant number of class members exercise their rights to opt out of the class settlements and pursue individual claims, and in the
event that the Company is required or determines to pay amounts in connection with these claims, such amounts could be significant and could have a material adverse impact on the Companys cash resources or financial position.



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The impact on us of claims of aboriginal title is unknown.

Aboriginal peoples have claimed aboriginal title and rights to portions of Western Canada. We are not aware that any material claims have been made in
respect of our properties and assets; however, if a material claim arose and was successful this could have an adverse effect on our results of operations and business.

We may be required to post a material security deposit under provincial liability management programs.

Alberta, Saskatchewan and British Columbiahave developed liability management programs designed to prevent taxpayers from incurring costs associated
with suspension, abandonment, remediation and reclamation of wells, facilities and pipelines in the event that a licensee or permit holder becomes defunct. These programs generally involve an assessment of the ratio of a licensees deemed
assets to deemed liabilities. If a licensees deemed liabilities exceed its deemed assets, a security deposit is required. Changes of the ratio of our deemed assets to deemed liabilities or changes to the requirements of liability management
programs may result in significant increases to the security that must be posted. In addition, the liability management system may prevent or interfere with the Corporations ability to acquire or dispose of assets as both the vendor and
the purchaser of oil and gas assets must be in compliance with the liability management programs (both before and after the transfer of the assets) for the applicable regulatory agency to allow for the transfer of such assets. Although Manitoba
does not have a liability management rating program similar to those found in the other western provinces, it does have similar programs that can require the posting of performance deposits and/or the payment of non-refundable levies. See
Industry Conditions - Liability Management Rating Programs.

Our exploration and development activities may be delayed if
drilling and related equipment is unavailable or if access to drilling locations is restricted. These events could have an adverse impact on our business.

Oil and natural gas exploration and development activities depend on the availability of drilling and related equipment (typically leased from third parties)
in the particular areas where such activities will be conducted. Demand for such limited equipment or access restrictions may affect the availability of such equipment to us and may delay exploration and development activities.

We rely on third parties to operate some of our assets.

Other companies operate some of the assets in which the Corporation has an interest. The Corporation has limited ability to exercise influence over the
operation of those assets or their associated costs, which could adversely affect the Corporations financial performance. The Corporations return on assets operated by others depends upon a number of factors that may be outside of
the Corporations control, including, but not limited to, the timing and amount of capital expenditures, the operators expertise and financial resources, the approval of other participants, the selection of technology, and risk management
practices.

In addition, due to the current low and volatile commodity price environment, many companies, including companies that may operate some of the
assets in which the Corporation has an interest, may be in financial difficulty, which could impact their ability to fund and pursue capital expenditures, carry out their operations in a safe and effective manner, and satisfy regulatory requirements
with respect to abandonment and reclamation obligations. If companies that operate some of the assets in which the Corporation has an interest fail to satisfy regulatory requirements with respect to abandonment and reclamation obligations, the
Corporation may be required to satisfy such obligations and to seek recourse from such companies. To the extent that any of such companies go bankrupt, become insolvent or make a proposal or institute any proceedings relating to bankruptcy or
insolvency, it could result in such assets being shut-in, the Corporation potentially becoming subject to additional liabilities relating to such assets, and the Corporation having difficulty collecting revenue due from such operators. Any of these
factors could materially adversely affect the Corporations financial and operational results.

We rely on third parties to pay us amounts
owing on our royalty interests.

The Corporation relies on other companies drilling and producing from lands in which the Corporation has a
royalty interest. The Corporation has limited ability to exercise influence over the decision of other companies to drill and produce from lands in which the Corporation has a royalty interest. The Corporations return on lands in which it has
a royalty interest depends upon a number of factors that may be outside of the Corporations control, including, but not limited to, the capital expenditure budgets and financial resources of the companies who have a working interest in such
lands, the operators ability to efficiently produce the resources from such lands, and commodity prices.



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In addition, due to the current low and volatile commodity price environment, many companies, including companies
that may have a working interest in the lands in which the Corporation has a royalty interest, may be in financial difficulty, which could affect their ability to fund and pursue capital expenditures on such lands. In addition, weak commodity prices
might result in companies choosing to defer capital spending or shutting-in existing production. Any reduction in drilling and production from lands in which the Corporation has a royalty interest will negatively affect the Corporations cash
flows and financial results.

The financial difficulty of any companies who have assets in which the Corporation has a royalty interest may affect the
Corporations ability to collect royalty payments, particularly if such companies go bankrupt, become insolvent or make a proposal or institute any proceedings relating to bankruptcy or insolvency.

Changes in Canadian income tax legislation and other laws may adversely affect us and our Shareholders.

Income tax laws, or other laws or government incentive programs relating to the oil and gas industry, such as the treatment of resource taxation or dividends,
may in the future be changed or interpreted in a manner that adversely affects us and our Shareholders. Furthermore, tax authorities having jurisdiction over us or our Shareholders may disagree with how we calculate our income for tax purposes
or could change administrative practises to our detriment or the detriment of our Shareholders.

We file all required income tax returns and believe that
we are in compliance with the provisions of the Tax Act and all other applicable provincial tax legislation. However, such returns are subject to reassessment by the applicable taxation authority. In the event of a successful reassessment
of Penn West, whether by re-characterization of exploration and development expenditures or otherwise, such reassessment may have an impact on current and future taxes payable.

We may incur material expenses complying with new or amended laws and regulations governing climate change.

Our exploration and production facilities and other operations and activities emit GHGs and require us to comply with GHG emissions legislation at the
provincial and federal levels. Climate change policy is evolving at regional, national and international levels, and political and economic events may significantly affect the scope and timing of climate change measures that are ultimately put
in place. As a signatory to the United Nations Framework Convention on Climate Change(the UNFCCC) and as a participant to the Copenhagen Agreement (a non-binding agreement created by the UNFCCC), the Government of Canada
announced on January 29, 2010 that it will seek a 17% reduction in GHG emissions from 2005 levels by 2020; however, these GHG emission reduction targets are not binding. Some of our significant facilities may ultimately be subject to future
regional, provincial and/or federal climate change regulations to manage GHG emissions. As a result of the UNFCCC adopting the Paris Agreement on December 12, 2015, to which Canada was a participant, the Government of Canada is expected to
announce a plan to further reduce its GHG emission reduction targets by March 11, 2016. The direct or indirect costs of compliance with these regulations may have a material adverse effect on our business, financial condition, results of
operations and prospects. In addition, concerns about climate change have resulted in a number of environmental activists and members of the public opposing the continued exploitation and development of fossil fuels. Given the evolving nature
of the debate related to climate change and the control of GHGs and resulting requirements, it is not possible to predict the impact on us and our operations and financial condition. See Industry Conditions  Climate Change
Regulation.

We are exposed to potential liabilities that may not be covered, in part or in whole, by insurance.

Our involvement in the exploration and development of oil and natural gas properties could subject us to liability for pollution, blowouts, leaks of sour
natural gas, property damage, personal injury or other hazards. Prior to commencing operations, we obtain insurance in accordance with industry standards to address certain of these risks. Such insurance has limitations on liability that
may not be sufficient to cover the full extent of such liabilities. In addition, such risks may not, in all circumstances, be insurable or, in certain circumstances, we may elect not to obtain insurance to deal with specific risks due to the
high premiums associated with such insurance or other reasons. The payment of such uninsured liabilities would reduce the funds available to us. The occurrence of a significant event that we are not fully insured against, or the insolvency
of the insurer of such event, could have a material adverse effect on our financial position, results of operations or prospects.



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Future acquisitions, financings or other transactions and the issuance of securities pursuant to our stock
option plan may result in Shareholder dilution.

We may make future acquisitions or enter into financings or other transactions involving the
issuance of our securities, which may be dilutive to Shareholders. Shareholder dilution may also result from the issuance of Common Shares pursuant to our stock option plan (Option Plan). For more information regarding
our Option Plan, see our most recent Information Circular and Proxy Statement, financial statements and related MD&A filed on SEDAR at www.sedar.com.

In certain circumstances we may be required under applicable accounting standards to write down the value of the goodwill recorded on our balance sheet
and incur a non-cash charge against income.

IFRS requires that goodwill balances be tested at least annually for impairment and that any
impairment be charged to income. A reduction in reserves, a decline in commodity prices, and/or a reduction in the Common Share price could indicate goodwill impairment. As at December 31, 2015, the Company had no remaining goodwill
after completion of its annual impairment test.

We do not operate all of our properties and facilities. Therefore, our results of operations
may be adversely affected by pipeline interruptions and apportionments, railway interruptions and/or the actions or inactions of third party operators, any of which could cause delays in receiving our revenues and cause us to incur additional
expenses, which could in turn adversely affect the market price of our Common Shares.

We deliver our products through gathering and processing
facilities, pipeline systems and by railway systems, some of which we do not own. The amount of oil and natural gas that we can produce and sell is subject to the accessibility, availability, proximity and capacity of these gathering and
processing facilities, pipeline systems and railway lines. The lack of availability of capacity in any of the gathering and processing facilities, pipeline systems or railway lines, could result in our inability to realize the full economic
potential of our production or in a reduction of the price offered for our production. The lack of firm pipeline capacity continues to affect the oil and natural gas industry and limit the ability to produce and to market oil and natural gas.
In addition, the pro-rationing of capacity on inter-provincial pipeline systems also continues to affect the ability to export oil and natural gas. Unexpected shut downs or curtailment of capacity of pipelines for maintenance or integrity work or
because of actions taken by regulators could also affect the Corporations production, operations and financial results. As a result, producers are increasingly turning to rail as an alternative means of transportation and competition for
contracting rail capacity is increasing. In recent years, the volume of crude oil shipped by rail in North America has increased dramatically. Any significant change in market factors or other conditions affecting these infrastructure systems
and facilities, as well as any delays in constructing new infrastructure systems and facilities, could harm our business and, in turn, our financial condition, results of operations and cash flows. For instance, the federal government has
signaled that it plans to review the National Energy Board approval process for large projects. This may cause the timeframe for project approvals to increase for current and future applications.

Following major accidents in Lac-Megantic, Quebec and North Dakota, the Transportation Safety Board of Canada and the U.S. National Transportation Board have
recommended additional regulations for railway tank cars carrying crude oil. In June 2015, as a result of these recommendations, the Government of Canada passed the Safe and Accountable Rail Act,which increased insurance
obligations on the shipment of crude oil by rail and imposed a per tonne levy of $1.65 on crude oil shipped by rail to compensate victims and for environmental cleanup in the event of a railway accident. In addition to this legislation, new
regulations have implemented the TC-117 standard for all rail tank cars carrying flammable liquids which formalized the commitment to retrofit, and eventually phase out, DOT-111 tank cars carrying crude oil. The increased regulation of rail
transportation may reduce the ability of railway lines to alleviate pipeline capacity issues and add additional costs to the transportation of crude oil by rail.

A portion of our production may, from time to time, be processed through facilities owned by third parties that we do not control. From time to time
these facilities may discontinue or decrease operations either as a result of normal servicing requirements or as a result of unexpected events. A discontinuation or decrease of operations could materially adversely affect our ability to
process our production and to deliver the same for sale.



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Lower oil and gas prices and higher costs increase the risk of write-downs of our oil and gas property
assets and goodwill.

Under IFRS, when indicators of impairment exist, the carrying value of our Property, Plant and Equipment
(PP&E), Exploration and Evaluation (E&E) assets and Goodwill is compared to its recoverable amount. The recoverable amount is defined as the higher of the fair value less cost to sell or value in use. A
decline in oil and gas prices may be an indicator of impairment and may result in a write-down of the value of our assets. While these write-downs would not affect cash flow from operations, the charge to earnings may be viewed unfavourably by
investors and could adversely impact the market price of our Common Shares and covenant calculations. PP&E or E&E asset write-downs may also be reversed to earnings in future periods should the conditions that caused impairment reverse.

We may not be able to maintain the confidentiality of sensitive information in business dealings with third parties, and our remedies for breaches
of confidentiality may not fully compensate us for our losses.

While discussing potential business relationships or other transactions with third
parties, we may disclose confidential information relating to our business, operations or affairs. Although confidentiality agreements are signed by third parties prior to the disclosure of any confidential information, a breach could put us at
competitive risk and may cause significant damage to our business. The harm to our business from a breach of confidentiality cannot presently be quantified, but may be material and may not be compensable in damages. There is no assurance that, in
the event of a breach of confidentiality, we will be able to obtain equitable remedies, such as injunctive relief, from a court of competent jurisdiction in a timely manner, if at all, in order to prevent or mitigate any damage to our business that
such a breach of confidentiality may cause.

Our inability to manage growth could adversely affect our business and our Shareholders.

We may be subject to growth related risks, including capacity constraints and pressures on our internal systems and controls. These constraints and
pressures could result from, among other things, the completion of large acquisitions. Our ability to manage growth effectively will require us to continue to implement and improve our operational and financial systems and to expand, train and
manage our employee base. Our inability to deal with this growth could have a material adverse impact on our business, operations and prospects.

An unforeseen defect in the chain of title to our oil and natural gas producing properties may arise to defeat our claim, which could have an adverse
effect on the market price of our Common Shares.

Although title reviews may be conducted prior to the purchase of oil and natural gas producing
properties or the commencement of drilling wells, such reviews do not guarantee or certify that an unforeseen defect in the chain of title will not arise. The actual interest of the Corporation in properties may accordingly vary from the
Corporations records. If a title defect does exist, it is possible that the Corporation may lose all or a portion of the properties to which the title defect relates, which may have a material adverse effect on the Corporations business,
financial condition, results of operations and prospects. There may be valid challenges to title or legislative changes, which affect the Corporations title to the oil and natural gas properties the Corporation controls that could impair
the Corporations activities on them and result in a reduction of the revenue received by the Corporation.

The ability of residents of the
United States to enforce civil remedies against us and our directors, officers and experts may be limited.

Penn West is organized under the laws
of Alberta, Canada and our principal places of business are in Canada. Most of our directors and officers and the experts named herein are residents of Canada, and a substantial portion of our assets and all or a substantial portion of the
assets of most of such persons are located outside the United States. As a result, it may be difficult for investors in the United States to effect service of process within the United States upon those directors, officers and experts who are
not residents of the United States or to enforce against them judgments of United States courts based upon civil liability under the United States federal securities laws or the securities laws of any state within the United States. There is
doubt as to the enforceability in Canada against us or against any of our directors, officers or experts who are not residents of the United States, in original actions or in actions for enforcement of judgments of United States courts of
liabilities based solely upon the United States federal securities laws or the securities laws of any state within the United States.



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The termination or expiration of licenses and leases through which we or our industry partners hold our
interests in petroleum and natural gas substances could adversely affect the market price of our Common Shares.

Our properties are held in the
form of licenses and leases and working interests in licenses and leases. If we or the holder of the license or lease fail to meet the specific requirement of a license or lease, the license or lease may terminate or expire. There can be
no assurance that all of the obligations required to maintain each license or lease will be met. The termination or expiration of a license or lease or the working interest relating to a license or lease may have a material adverse effect on
our results of operations and business.

Our directors and management may have conflicts of interest that may create incentives for them to act
contrary to or in competition with the interests of our Shareholders.

Certain directors and officers of Penn West are engaged in, and will
continue to engage in, other activities in the oil and natural gas industry and, as a result of these and other activities, the directors and officers of Penn West may become subject to conflicts of interest. The ABCA provides that in the event
that a director has an interest in a contract or proposed contract or agreement, the director must disclose his interest in such contract or agreement and must refrain from voting on any matter in respect of such contract or agreement unless
otherwise provided under the ABCA. To the extent that conflicts of interest arise, such conflicts will be resolved in accordance with the provisions of the ABCA and our Code of Business Conduct and Ethics. See Directors and
Executive Officers of Penn West  Conflicts of Interest.

A decrease in the fair market value of our hedging instruments could result
in a non-cash charge against our income under applicable accounting standards.

Under IFRS, accounting for financial instruments may result in
non-cash charges against income as a result of reductions in the fair market value of hedging instruments. A decrease in the fair market value of the hedging instruments as a result of fluctuations in commodity prices and/or foreign exchange
rates may result in a non-cash charge against income, which may be viewed unfavourably in the market.

We may in the future expand our operations
into new geographical regions where our existing management does not have experience. In addition, we may in the future acquire new types of energy related assets in respect of which our existing management does not have experience. Any
such expansion or acquisition could result in our exposure to new risks that if not properly managed could ultimately have an adverse effect on our business and the market price of our Common Shares.

The operations and expertise of our management are currently focused primarily on oil and gas production, exploration and development in the Western Canada
Sedimentary Basin. In the future, we may acquire or develop oil and gas properties outside of this geographic area. In addition, we could acquire other energy related assets, such as upgraders or pipelines. Expansion of our activities
into new areas may present new risks or alternatively, significantly increase our exposure to one or more existing risk factors, which may in turn result in our future operational and financial conditions being adversely affected.

Our information assets and critical infrastructure may be subject to destruction, theft, cyber-attacks or misuse by unauthorized parties.

We are subject to a variety of information technology and/or system risks as a part of our normal course operations. Although we have security measures in
place that are designed to mitigate these risks, a breach of our security measures and/or a loss of information could occur and result in a loss of material and/or confidential information and/or a disruption to our business activities. The
significance of any such event is difficult to quantify, but may in certain circumstances be material and adverse to our financial condition and results of operations and thus the market price of our Common Shares.

There might not always be an active trading market in the United States and/or Canada for the Common Shares.

While there is currently an active trading market for the Common Shares in both the United States and Canada, we cannot guarantee that an active trading
market will be sustained in either country. If an active trading market in the Common Shares is not sustained, the trading liquidity of the Common Shares will be limited and the market value of the Common Shares may be reduced.



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On January 4, 2016, we received notification from the NYSE that we no longer are in compliance with one of the
NYSEs continued listing standards applicable to us because the average closing price of our Common Shares was less than US$1.00 per share over a consecutive 30 trading day period. Under the NYSEs rules, we have a period of six
months from the date of the NYSE notification to regain compliance with the NYSEs price listing standard and avoid delisting. Penn West can regain compliance if, during the applicable cure period, on the last trading day of any calendar
month, Penn Wests Common Shares have a closing price and a 30 trading day average closing price of at least U.S.$1.00 per share. In the event that at the expiration of the applicable cure period Penn West has not regained compliance, the
NYSE will commence suspension and delisting procedures. Although Penn West has notified the NYSE that it intends to cure this price deficiency and return to compliance with the NYSEs price listing standard, there can be no assurance that
Penn West will cure the deficiency and avoid delisting.

The market price of our Common Shares has been and will likely continue to be volatile, and
may at times be less than our net asset value per Common Share.

The trading price of securities of oil and natural gas issuers is subject to
substantial volatility, and is often based on factors both related and unrelated to the financial performance or prospects of the issuers involved. Factors unrelated to our performance could include macroeconomic developments nationally, within
North America or globally, domestic and global commodity prices or current perceptions of the oil and gas market. Similarly, the market price of our Common Shares could be subject to significant fluctuations in response to variations in our
operating results, financial condition, liquidity, debt levels and other internal factors.

Our net asset value from time to time will vary depending upon
a number of factors beyond our control, including oil and gas prices. The trading price of the Common Shares from time to time is determined by a number of factors, some of which are beyond our control and such trading price may be greater or
less than our net asset value. The price at which our Common Shares will trade cannot be accurately predicted.

MATERIAL CONTRACTS

Except for contracts entered into in the ordinary course of business, the only contracts that are material to us and that were entered into by us or
one of our Subsidiaries within the most recently completed financial year or before the most recently completed financial year but which are still material and are still in effect, are the following:



| | (a) | the credit agreement dated May 6, 2014 (as amended on May 22, 2015) among Penn West and certain lenders and other parties in respect of Penn Wests $1.2billion syndicated credit facility, which agreement is
described under Capitalization of Penn West  Debt Capital  Credit Facility;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | the note purchase agreement dated May 31, 2007 (as amended on December 2, 2010, August 15, 2014 and May 22, 2015) among Penn West and the holders of our Series B, Series C and Series D Senior Notes,
which agreement is described under Capitalization of Penn West  Debt Capital  Senior Notes;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | the note purchase agreement dated May 29, 2008 (as amended on December 2, 2010, August 15, 2014 and May 22, 2015) among Penn West and the holders of our Series E, Series F, Series G and Series H
Senior Notes, which agreement is described under Capitalization of Penn West  Debt Capital  Senior Notes;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | the note purchase agreement dated July 31, 2008 (as amended on December 2, 2010, August 15, 2014 and May 22, 2015) among Penn West and the holders of our Series I Senior Notes, which agreement is
described under Capitalization of Penn West  Debt Capital  Senior Notes;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | the note purchase agreement dated May 5, 2009 (as amended on December 2, 2010, August 15, 2014 and May 22, 2015) among Penn West and the holders of our Series K, Series L, Series M, Series N and Series O
Senior Notes, which agreement is described under Capitalization of Penn West  Debt Capital  Senior Notes;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | the note purchase agreement dated March 16, 2010 (as amended on December 2, 2010, August 15, 2014 and May 22, 2015) among Penn West and the holders of our Series R, Series S, Series T and Series U
Senior Notes, which agreement is described under Capitalization of Penn West  Debt Capital  Senior Notes;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (g) | the note purchase agreement dated December 2, 2010 (as amended on December 2, 2010 , August 15, 2014 and May 22, 2015) among Penn West and the holders of our Series W, Series X, Series Y, Series Z
and Series BB Senior Notes, which agreement is described under Capitalization of Penn West  Debt Capital  Senior Notes; and
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (h) | the note purchase agreement dated November 30, 2011 (as amended on August 15, 2014 and May 22, 2015) among Penn West and the holders of our Series CC, Series DD, Series EE and Series FF Senior Notes,
which agreement is described under Capitalization of Penn West  Debt Capital  Senior Notes.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Copies of each of these
agreements have been filed on SEDAR at www.sedar.com.

Economic Dependence

We are not currently a party to any contract on which our business is substantially dependent, including any contract to sell the major part of our products or
to purchase the major part of our requirements for goods, services or raw materials, or any franchise or licence or other agreement to use a patent, formula, trade secret, process or trade name on which our business depends.

LEGAL PROCEEDINGS AND REGULATORY ACTIONS

Legal Proceedings

Except in relation to certain class
action lawsuits described under Risk Factors, there are no legal proceedings that Penn West is or was a party to, or that any of Penn Wests property is or was the subject of, during the most recently completed financial
year, that were or are material to Penn West, and there are no such material legal proceedings that Penn West knows to be contemplated. For the purposes of the foregoing, a legal proceeding is not considered to be material by us if
it involves a claim for damages and the amount involved, exclusive of interest and costs, does not exceed 10 percent of our current assets, provided that if any proceeding presents in large degree the same legal and factual issues as other
proceedings pending or known to be contemplated, we have included the amount involved in the other proceedings in computing the percentage.

Regulatory
Actions

There were no: (i) penalties or sanctions imposed against Penn West by a court relating to securities legislation or by a security
regulatory authority during our most recently completed financial year; (ii) any other penalties or sanctions imposed by a court or regulatory body against Penn West that would likely be considered important to a reasonable investor in making
an investment decision; or (iii) settlement agreements Penn West entered into before a court relating to securities legislation or with a securities regulatory authority during Penn Wests most recently completed financial year.

TRANSFER AGENTS AND REGISTRARS

The
transfer agent and registrar for the Common Shares in Canada is CST Trust Company at its principal offices in Calgary, Alberta and Toronto, Ontario. The co-transfer agent and registrar for the Common Shares in the United States is Computershare
Shareowner Services at its principal offices in Jersey City, New Jersey.

INTEREST OF MANAGEMENT AND OTHERS IN MATERIAL TRANSACTIONS

There were no material interests, direct or indirect, of any director or executive officer of Penn West, any person or company that beneficially
owns, or controls or directs, directly or indirectly, more than 10 percent of the outstanding Common Shares, or any known associate or affiliate of any such person, in any transaction within Penn Wests three most recently completed financial
years or during our current financial year that has materially affected or is reasonably expected to materially affect Penn West.



60



---

INTERESTS OF EXPERTS

There is no person or company whose profession or business gives authority to a report, valuation, statement or opinion made by such person or company and who
is named as having prepared or certified a report, valuation, statement or opinion described or included in a filing, or referred to in a filing, made under National Instrument 51-102 Continuous Disclosure Obligations by us during, or related to,
our most recently completed financial year, other than Sproule, the independent engineering evaluator retained by us in 2015 (the Expert), and Ernst & Young LLP (E&Y), our auditors.

There were no registered or beneficial interests, direct or indirect, in any securities or other property of Penn West or of one of our associates or
affiliates: (i) held by the Expert or by the designated professionals (as defined in Form 51-102F2  Annual Information Form) of the Expert, when the Expert prepared the relevant
report, valuation, statement or opinion; (ii) received by the Expert or by the designated professionals of the Expert, after the preparation of the relevant report, valuation, statement or opinion; or (iii) to be received by
the Expert or by the designated professionals of the Expert; except with respect to the ownership of our Common Shares, in which case the persons or companys interest in our Common Shares represents less than one percent of
our outstanding Common Shares. The foregoing does not include registered or beneficial interests, direct or indirect, held through mutual funds.

E&Y are the auditors of Penn West and have confirmed that they are independent with respect to Penn West within the meaning of the relevant rules and
related interpretations prescribed by the relevant professional bodies in Canada and any applicable legislation or regulations, and also that they are independent accountants with respect to Penn West under all relevant US professional and
regulatory standards.

No director, officer or employee of the Expert or E&Y is or is expected to be elected, appointed or employed as a director,
officer or employee of Penn West or of any associate or affiliate of Penn West.

ADDITIONAL INFORMATION

Additional information relating to Penn West may be found on SEDAR at www.sedar.com and on EDGAR at www.sec.gov. Additional information, including
directors and officers remuneration and indebtedness, principal holders of Penn Wests securities and securities authorized for issuance under equity compensation plans, is contained in Penn Wests Information Circular for its
most recent annual meeting of securityholders that involved the election of directors. Additional financial information is provided in Penn Wests financial statements and MD&A for its most recently completed financial year.

Any document referred to in this Annual Information Form and described as being filed on SEDAR at www.sedar.com and on EDGAR at www.sec.gov (including
those documents referred to as being incorporated by reference in this Annual Information Form) may be obtained free of charge from us by contacting our Investor Relations Department by telephone (toll free: 1-888-770-2633) or by email
(investor_relations@pennwest.com).



61



---

APPENDIX A-1

REPORT OF MANAGEMENT AND DIRECTORS ON RESERVES DATA AND OTHER INFORMATION

(Form 51-101F3)

Management of Penn West
Petroleum Ltd. (Penn West) is responsible for the preparation and disclosure of information with respect to Penn Wests oil and gas activities in accordance with securities regulatory requirements. This information
includes reserves data, which are estimates of proved reserves and probable reserves and related future net revenue as at December 31, 2015, estimated using forecast prices and costs.

An independent qualified reserves evaluator has evaluated Penn Wests reserves data. The report of the independent qualified reserves evaluator is
presented below.

The Reserves Committee of the Board of Directors of Penn West has:



| | (a) | reviewed Penn Wests procedures for providing information to the independent qualified reserves evaluator;
| | --- | ----------------------------------------------------------------------------------------------------------



| | (b) | met with the independent qualified reserves evaluator to determine whether any restrictions affected the ability of the independent qualified reserves evaluator to report without reservation, and, in the event of a
proposal to change the independent qualified reserves evaluator, to inquire whether there had been disputes between the previous independent qualified reserves evaluator and management; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | reviewed the reserves data with management and the independent qualified reserves evaluator.
| | --- | --------------------------------------------------------------------------------------------

The Reserves
Committee of the Board of Directors has reviewed Penn Wests procedures for assembling and reporting other information associated with oil and gas activities and has reviewed that information with management. The Board of Directors has, on
the recommendation of the Reserves Committee, approved:



| | (a) | the content and filing with securities regulatory authorities of Form 51-101F1 containing reserves data and other oil and gas information;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | the filing of Form 51-101F2 which is the report of the independent qualified reserves evaluator on the reserves data; and
| | --- | -------------------------------------------------------------------------------------------------------------------------



| | (c) | the content and filing of this report.
| | --- | --------------------------------------

Because the reserves data are based on judgments regarding future
events, actual results will vary and the variations may be material.



|                                                             |  |                                                             
|------------------------------------------------------------ |  | ------------------------------------------------------------
|(signed) David E. Roberts                                  |  | (signed) David A. Dyck                                    
|President and Chief Executive Officer                        |  | Senior Vice President and Chief Financial Officer           
|                                                             | 
|(signed) William Friley                                    |  | (signed)  Richard L. George                               
|Director and Chairof the Operations and Reserves Committee   |  | Director and Member of the Operations and Reserves Committee
|                                                             | 
|(signed) John Brydson                                      |  |                                                             
|Director and Member of the Operations and Reserves Committee |  |                                                             
|                                                             | 
|March 9, 2016                                                |  |                                                             



---

APPENDIX A-2

REPORT ON RESERVES DATA

(Form 51-101F2)

To the Board of
Directors of Penn West Petroleum Ltd. (Penn West):



| | 1. | We have evaluated Penn Wests reserves data as at December 31, 2015. The reserves data are estimates of proved reserves and probable reserves and related future net revenue as at December 31, 2015,
estimated using forecast prices and costs.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 2. | The reserves data are the responsibility of Penn Wests management. Our responsibility is to express an opinion on the reserves data based on our evaluation.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | We carried out our evaluation in accordance with standards set out in the Canadian Oil and Gas Evaluation Handbook as amended from time to time (the COGE Handbook), maintained by the Society of Petroleum
Evaluation Engineers (Calgary Chapter).
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 4. | Those standards require that we plan and perform an evaluation to obtain reasonable assurance as to whether the reserves data are free of material misstatement. An evaluation also includes assessing whether the
reserves data are in accordance with principles and definitions presented in the COGE Handbook.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 5. | The following table sets forth the estimated future net revenue (before deduction of income taxes) attributed to proved plus probable reserves, estimated using forecast prices and costs and calculated using a discount
rate of 10 percent, included in the reserves data of Penn West evaluated by us for the year ended December 31, 2015, and identifies the respective portions thereof that we have audited, evaluated and reviewed and reported on to Penn
Wests management and Board of Directors:
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|                                                    |  |                                                                                                         |         |                             |  |                                                                                          |     |  |          |   |       |       |  |  |     |  |  |   |       | 
|--------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------- | ------- | --------------------------- |  | ---------------------------------------------------------------------------------------- | --- |  | -------- | - | ----- | ----- |  |  | --- |  |  | - | ----- | 
|Independent Qualified Reserves Evaluator or Auditor |  | Description and PreparationDate of Evaluation
Report                                                    |         | LocationofReserves(Country) |  | Net Present Value of Future Net Revenue(millions before income taxes, 10% discount rate) |    
|                                                    |  |                                                                                                         | Audited |                             |  | Evaluated                                                                                |     |  | Reviewed |   |       | Total | 
|Sproule Associates Limited                          |  | Evaluation of the P&NG Reserves of Penn West Petroleum Ltd. (As of December 31, 2015)
 February 3, 2016 |         | Canada                      |  |                                                                                          | nil |  |          | $ | 3,397 |       |  |  | nil |  |  | $ | 3,397 | 



| | 6. | In our opinion, the reserves data respectively evaluated by us have, in all material respects, been determined and are in accordance with the COGE Handbook, consistently applied. We express no opinion on the
reserves data that we reviewed but did not audit or evaluate.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 7. | We have no responsibility to update our reports referred to in paragraph 5 for events and circumstances occurring after their respective preparation dates.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| | 8. | Because the reserves data are based on judgements regarding future events, actual results will vary and the variations may be material.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------

Executed as to our report referred to above:

(signed)
Sproule Associates Limited

Sproule Associates Limited

Calgary, Alberta, Canada

February 3, 2016



---

APPENDIX A-3

STATEMENT OF RESERVES DATA AND OTHER OIL AND GAS INFORMATION

Our statement of reserves data and other oil and gas information dated March 9, 2016 is set forth below (the Statement). The effective
date of the Statement is December 31, 2015 and the preparation date of the Statement is March 9, 2016. The Report of Management and Directors on Reserves Data and Other Information on Form 51-101F3 and the Report on Reserves Data by
Sproule on Form 51-101F2 are attached as Appendices A-1 and A-2, respectively, to this Annual Information Form.

Disclosure of Reserves Data

The reserves data set forth below is based upon an evaluation prepared by Sproule with an effective date of December 31, 2015 contained in the
Engineering Report. The reserves data summarizes our oil, natural gas liquids and natural gas reserves and the net present values of future net revenue from these reserves using forecast prices and costs, not including the impact of any hedging
activities. The reserves data conforms to the requirements of NI 51-101. We engaged Sproule to evaluate all of our proved and proved plus probable reserves. See also Notes to Reserves
Data Tables below.

The vast majority of our proved plus probable reserves are located in Canada in Alberta, British Columbia, and Saskatchewan.

It should not be assumed that the estimates of future net revenues presented in the tables below represent the fair market value of the
reserves. There is no assurance that the forecast price and cost assumptions will be attained and variances could be material. The recovery and reserves estimates of crude oil, natural gas liquids and natural gas reserves provided herein
are estimates only and there is no guarantee that the estimated reserves will be recovered. Actual crude oil, natural gas and natural gas liquid reserves may be greater than or less than the estimates provided herein.

BOEs may be misleading, particularly if used in isolation. A boe conversion ratio of 6 Mcf: 1 bbl is based on an energy equivalency conversion method
primarily applicable at the burner tip and does not represent a value equivalency at the wellhead. Given that the value ratio based on the current price of crude oil as compared to natural gas is significantly different from the energy
equivalency conversion ratio of 6:1, utilizing a conversion on a 6:1 basis is misleading as an indication of value.

For more information as to the
risks involved, see Risk Factors.



A3-2



---

SUMMARY OF OIL AND GAS RESERVES

AS OF DECEMBER 31, 2015

FORECAST PRICES AND COSTS



|                           |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|-------------------------- |  | -------------------- | --- |  | --------------------- |  | --- | ------------ |  |  | ---------- |  |  |  | -- | 
|                           |  | RESERVES             |    
|                           |  | LIGHT AND MEDIUM OIL |     |  | HEAVY OIL AND BITUMEN | 
|RESERVES CATEGORY          |  | Gross(MMbbl)         |     |  | Net(MMbbl)            |  |     | Gross(MMbbl) |  |  | Net(MMbbl) | 
|                           |  |                      |     | 
|PROVED                     |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|Developed Producing        |  |                      | 85  |  |                       |  | 77  |              |  |  | 30         |  |  |  | 28 | 
|Developed Non-Producing    |  |                      | 3   |  |                       |  | 3   |              |  |  |           |  |  |  |   | 
|Undeveloped                |  |                      | 16  |  |                       |  | 15  |              |  |  | 2          |  |  |  | 2  | 
|                           |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|TOTAL PROVED               |  |                      | 104 |  |                       |  | 94  |              |  |  | 33         |  |  |  | 30 | 
|                           |  |                      |     | 
|PROBABLE                   |  |                      | 36  |  |                       |  | 31  |              |  |  | 37         |  |  |  | 32 | 
|                           |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|TOTAL PROVED PLUS PROBABLE |  |                      | 141 |  |                       |  | 126 |              |  |  | 70         |  |  |  | 62 | 
|                           |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|                           | 
|                           |  | RESERVES             |    
|                           |  | NATURAL GAS          |     |  | NATURAL GAS LIQUIDS   | 
|RESERVES CATEGORY          |  | Gross(Bcf)           |     |  | Net(Bcf)              |  |     | Gross(MMbbl) |  |  | Net(MMbbl) | 
|                           |  |                      |     | 
|PROVED                     |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|Developed Producing        |  |                      | 306 |  |                       |  | 271 |              |  |  | 11         |  |  |  | 8  | 
|Developed Non-Producing    |  |                      | 16  |  |                       |  | 14  |              |  |  | 1          |  |  |  |   | 
|Undeveloped                |  |                      | 32  |  |                       |  | 29  |              |  |  | 1          |  |  |  | 1  | 
|                           |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|TOTAL PROVED               |  |                      | 353 |  |                       |  | 314 |              |  |  | 12         |  |  |  | 9  | 
|                           |  |                      |     | 
|PROBABLE                   |  |                      | 120 |  |                       |  | 107 |              |  |  | 4          |  |  |  | 3  | 
|                           |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 
|TOTAL PROVED PLUS PROBABLE |  |                      | 473 |  |                       |  | 421 |              |  |  | 16         |  |  |  | 12 | 
|                           |  |                      |     |  |                       |  |     |              |  |  |            |  |  |  |    | 



|                           |  |                      |     |  |            |  |     | 
|-------------------------- |  | -------------------- | --- |  | ---------- |  | --- | 
|                           |  | RESERVES             |    
|                           |  | TOTAL OIL EQUIVALENT |    
|RESERVES CATEGORY          |  | Gross(MMboe)         |     |  | Net(MMboe) | 
|                           |  |                     
|PROVED                     |  |                      |     |  |            |  |     | 
|Developed Producing        |  |                      | 177 |  |            |  | 158 | 
|Developed Non-Producing    |  |                      | 6   |  |            |  | 5   | 
|Undeveloped                |  |                      | 25  |  |            |  | 22  | 
|                           |  |                      |     |  |            |  |     | 
|TOTAL PROVED               |  |                      | 209 |  |            |  | 186 | 
|                           |  |                     
|PROBABLE                   |  |                      | 97  |  |            |  | 84  | 
|                           |  |                      |     |  |            |  |     | 
|TOTAL PROVED PLUS PROBABLE |  |                      | 306 |  |            |  | 270 | 
|                           |  |                      |     |  |            |  |     | 



A3-3



---

SUMMARY OF NET PRESENT VALUES OF FUTURE NET REVENUE AS OF DECEMBER 31, 2015

BEFORE INCOME TAXES DISCOUNTED AT (%/year)

FORECAST PRICES AND COSTS



|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |  |                                                      |  |       |         |  |  |       |  |  |  |      | 
|-------------------------- |  | ------- | ----- |  | ------- |  | ----- | -------- |  |  | -------- |  |  | -------- | ----- |  | ---------------------------------------------------- |  | ----- | ------- |  |  | ----- |  |  |  | ---- | 
|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |  | Unit Value Before IncomeTax Discounted at10%/year(1) | 
|RESERVES CATEGORY          |  | 0%(MM$) |       |  | 5%(MM$) |  |       | 10%(MM$) |  |  | 15%(MM$) |  |  | 20%(MM$) |       |  | ($/bbl)                                              |  |       | ($/Mcf) | 
|                           |  |         |       |  |         |  |      
|PROVED                     |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |  |                                                      |  |       |         |  |  |       |  |  |  |      | 
|Developed Producing        |  |         | 4,782 |  |         |  | 3,253 |          |  |  | 2,465    |  |  |          | 1,989 |  |                                                      |  | 1,671 |         |  |  | 15.56 |  |  |  | 2.59 | 
|Developed Non-Producing    |  |         | 134   |  |         |  | 98    |          |  |  | 76       |  |  |          | 61    |  |                                                      |  | 51    |         |  |  | 13.91 |  |  |  | 2.32 | 
|Undeveloped                |  |         | 514   |  |         |  | 223   |          |  |  | 83       |  |  |          | 10    |  |                                                      |  | (30   | )       |  |  | 3.74  |  |  |  | 0.62 | 
|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |  |                                                      |  |       |         |  |  |       |  |  |  |      | 
|TOTAL PROVED               |  |         | 5,430 |  |         |  | 3,574 |          |  |  | 2,624    |  |  |          | 2,060 |  |                                                      |  | 1,691 |         |  |  | 14.10 |  |  |  | 2.35 | 
|                           |  |         |       |  |         |  |      
|PROBABLE                   |  |         | 2,657 |  |         |  | 1,336 |          |  |  | 772      |  |  |          | 486   |  |                                                      |  | 323   |         |  |  | 9.18  |  |  |  | 1.53 | 
|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |  |                                                      |  |       |         |  |  |       |  |  |  |      | 
|                           |  |         |       |  |         |  |      
|TOTAL PROVED PLUS PROBABLE |  |         | 8,087 |  |         |  | 4,911 |          |  |  | 3,397    |  |  |          | 2,546 |  |                                                      |  | 2,014 |         |  |  | 12.57 |  |  |  | 2.09 | 
|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |  |                                                      |  |       |         |  |  |       |  |  |  |      | 

Note:



|(1) | The unit values are based on net reserve volumes.
|--- | -------------------------------------------------

SUMMARY OF NET PRESENT VALUES OF FUTURE NET
REVENUE AS OF DECEMBER 31, 2015

AFTER INCOME TAXES DISCOUNTED AT (%/year)

FORECAST PRICES AND COSTS



|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |   |  |  |       |  
|-------------------------- |  | ------- | ----- |  | ------- |  | ----- | -------- |  |  | -------- |  |  | -------- | ----- | - |  |  | ----- | -
|RESERVES CATEGORY          |  | 0%(MM$) |       |  | 5%(MM$) |  |       | 10%(MM$) |  |  | 15%(MM$) |  |  | 20%(MM$) |      
|                           |  |         |       |  |        
|PROVED                     |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |   |  |  |       |  
|Developed Producing        |  |         | 4,508 |  |         |  | 3,164 |          |  |  | 2,431    |  |  |          | 1,975 |   |  |  | 1,664 |  
|Developed Non-Producing    |  |         | 98    |  |         |  | 81    |          |  |  | 67       |  |  |          | 56    |   |  |  | 48    |  
|Undeveloped                |  |         | 369   |  |         |  | 157   |          |  |  | 50       |  |  |          | (7    | ) |  |  | (40   | )
|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |   |  |  |       |  
|TOTAL PROVED               |  |         | 4,975 |  |         |  | 3,402 |          |  |  | 2,549    |  |  |          | 2,024 |   |  |  | 1,673 |  
|                           |  |         |       |  |        
|PROBABLE                   |  |         | 1,928 |  |         |  | 986   |          |  |  | 580      |  |  |          | 372   |   |  |  | 252   |  
|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |   |  |  |       |  
|                           |  |         |       |  |        
|TOTAL PROVED PLUS PROBABLE |  |         | 6,903 |  |         |  | 4,388 |          |  |  | 3,129    |  |  |          | 2,396 |   |  |  | 1,924 |  
|                           |  |         |       |  |         |  |       |          |  |  |          |  |  |          |       |   |  |  |       |  



A3-4



---

TOTAL FUTURE NET REVENUE

(UNDISCOUNTED)

AS OF
DECEMBER 31, 2015

FORECAST PRICES AND COSTS



|                              |  |              |        |  |                |  |       |                     |  |  |                       |  |  |                                     |       |  |                                              |  |     |                        |  |  |                                             |  |  |  |       |  |  |  |       | 
|----------------------------- |  | ------------ | ------ |  | -------------- |  | ----- | ------------------- |  |  | --------------------- |  |  | ----------------------------------- | ----- |  | -------------------------------------------- |  | --- | ---------------------- |  |  | ------------------------------------------- |  |  |  | ----- |  |  |  | ----- | 
|RESERVES CATEGORY             |  | REVENUE(MM$) |        |  | ROYALTIES(MM$) |  |       | OPERATINGCOSTS(MM$) |  |  | DEVELOPMENTCOSTS(MM$) |  |  | ABANDONMENTANDRECLAMATIONCOSTS(MM$) |       |  | FUTURENETREVENUEBEFOREFUTUREINCOMETAXES(MM$) |  |     | FUTUREINCOMETAXES(MM$) |  |  | FUTURENETREVENUEAFTERFUTUREINCOMETAXES(MM$) | 
|                              |  |              |        |  |                |  |       |                    
|Proved Reserves               |  |              | 13,811 |  |                |  | 1,354 |                     |  |  | 5,780                 |  |  |                                     | 692   |  |                                              |  | 555 |                        |  |  | 5,430                                       |  |  |  | 455   |  |  |  | 4,975 | 
|                              |  |              |        |  |                |  |       |                    
|Proved Plus Probable Reserves |  |              | 20,971 |  |                |  | 2,312 |                     |  |  | 8,405                 |  |  |                                     | 1,528 |  |                                              |  | 640 |                        |  |  | 8,087                                       |  |  |  | 1,184 |  |  |  | 6,903 | 

FUTURE NET REVENUE

BY PRODUCTION GROUP

AS OF
DECEMBER 31, 2015

FORECAST PRICES AND COSTS



|                              |  |                                         |  |                                                  |       |  |               |  |       |         |  |  |      | 
|----------------------------- |  | --------------------------------------- |  | ------------------------------------------------ | ----- |  | ------------- |  | ----- | ------- |  |  | ---- | 
|                              |  |                                         |  | FUTURE NETREVENUEBEFOREINCOMETAXES(discounted at |       |  | UNIT VALUE(3) | 
|RESERVES CATEGORY             |  | PRODUCTION GROUP                        |  | 10%/year)(MM$)                                   |       |  | ($/bbl)       |  |       | ($/Mcf) | 
|                              |  |                                         |  |                                                 
|Proved Reserves               |  | Light and Medium Crude Oil(1)           |  |                                                  | 1,984 |  |               |  | 16.02 |         |  |  | 2.67 | 
|                              |  | Heavy Oil and Bitumen(1)                |  |                                                  | 478   |  |               |  | 15.28 |         |  |  | 2.55 | 
|                              |  | Natural Gas(2)                          |  |                                                  | 133   |  |               |  | 4.89  |         |  |  | 0.81 | 
|                              |  | Non-Conventional Oil and Gas Activities |  |                                                  | 29    |  |               |  | 7.63  |         |  |  | 1.27 | 
|                              |  |                                         |  |                                                  |       |  |               |  |       |         |  |  |      | 
|                              |  | TOTAL                                   |  |                                                  | 2,624 |  |               |  | 14.10 |         |  |  | 2.35 | 
|                              |  |                                         |  |                                                  |       |  |               |  |       |         |  |  |      | 
|                              |  |                                         |  |                                                 
|Proved Plus Probable Reserves |  | Light and Medium Crude Oil(1)           |  |                                                  | 2,510 |  |               |  | 15.06 |         |  |  | 2.51 | 
|                              |  | Heavy Oil and Bitumen(1)                |  |                                                  | 682   |  |               |  | 10.75 |         |  |  | 1.79 | 
|                              |  | Natural Gas(2)                          |  |                                                  | 169   |  |               |  | 4.82  |         |  |  | 0.80 | 
|                              |  | Non-Conventional Oil and Gas Activities |  |                                                  | 36    |  |               |  | 6.86  |         |  |  | 1.14 | 
|                              |  |                                         |  |                                                  |       |  |               |  |       |         |  |  |      | 
|                              |  | TOTAL                                   |  |                                                  | 3,397 |  |               |  | 12.57 |         |  |  | 2.09 | 
|                              |  |                                         |  |                                                  |       |  |               |  |       |         |  |  |      | 

Notes:



|(1) | Including solution gas and other by-products.
|--- | ---------------------------------------------

|(2) | Including by-products but excluding solution gas and by-products from oil wells.
|--- | --------------------------------------------------------------------------------

|(3) | The unit values are based on net reserve volumes.
|--- | -------------------------------------------------



A3-5



---

Notes to Reserves Data Tables



|1. | Columns may not add due to rounding.
|-- | ------------------------------------



|2. | The crude oil, natural gas liquids and natural gas reserves estimates presented in the Engineering Report are based on the definitions and guidelines contained in the Canadian Oil and Gas Evaluation Handbook (the
COGE Handbook). A summary of those definitions are set forth below:
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Reserves Categories

Reserves are estimated remaining quantities of oil and natural gas and related substances anticipated to be recoverable from known
accumulations, as of a given date, based on:



| | (a) | analysis of drilling, geological, geophysical and engineering data;
| | --- | -------------------------------------------------------------------



| | (b) | the use of established technology; and
| | --- | --------------------------------------



| | (c) | specified economic conditions, which are generally accepted as being reasonable, and shall be disclosed.
| | --- | --------------------------------------------------------------------------------------------------------

Reserves are classified according to the degree of certainty associated with the estimates.



| | (d) | Proved reservesare those reserves that can be estimated with a high degree of certainty to be recoverable.It is likely that the actual remaining quantities recovered will exceed the estimated proved
reserves.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | Probable reserves are those additional reserves that are less certain to be recovered than proved reserves. It is equally likely that the actual remaining quantities recovered will be greater or less than
the sum of the estimated proved plus probable reserves.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Other criteria that must also be met for the classification of
reserves are provided in the COGE Handbook.

Development and Production Status

Each of the reserves categories (proved and probable) may be divided into developed and undeveloped categories.



| | (a) | Developed reserves are those reserves that are expected to be recovered from existing wells and installed facilities or, if facilities have not been installed, that would involve a low expenditure (for example,
when compared to the cost of drilling a well) to put the reserves on production. The developed category may be subdivided into producing and non-producing.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | Developed producing reserves are those reserves that are expected to be recovered from completion intervals open at the time of the estimate. These reserves may be currently producing or, if shut-in, they
must have previously been on production, and the date of resumption of production must be known with reasonable certainty.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | Developed non-producing reserves are those reserves that either have not been on production, or have previously been on production, but are shut-in, and the date of resumption of production is unknown.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | Undeveloped reserves are those reserves expected to be recovered from known accumulations where a significant expenditure (for example, when compared to the cost of drilling a well) is required to render them
capable of production. They must fully meet the requirements of the reserves category (proved, probable) to which they are assigned.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In multi-well pools, it may be appropriate to allocate total pool reserves between the developed and undeveloped categories or to subdivide the
developed reserves for the pool between developed producing and developed



A3-6



---

non-producing. This allocation should be based on the estimators assessment as to the reserves that will be recovered from specific wells, facilities and completion intervals in the
pool and their respective development and production status.

Levels of Certainty for Reported Reserves

The qualitative certainty levels referred to in the definitions above are applicable to individual reserves entities, which refers
to the lowest level at which reserves calculations are performed, and to reported reserves, which refers to the highest level sum of individual entity estimates for which reserves estimates are presented. Reported reserves should
target the following levels of certainty under a specific set of economic conditions:



| | (a) | at least a 90 percent probability that the quantities actually recovered will equal or exceed the estimated proved reserves; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------



| | (b) | at least a 50 percent probability that the quantities actually recovered will equal or exceed the sum of the estimated proved plus probable reserves.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------

A quantitative measure of the certainty levels pertaining to estimates prepared for the various reserves categories is desirable to provide a
clearer understanding of the associated risks and uncertainties. However, the majority of reserves estimates are prepared using deterministic methods that do not provide a mathematically derived quantitative measure of probability. In
principle, there should be no difference between estimates prepared using probabilistic or deterministic methods.

Additional clarification
of certainty levels associated with reserves estimates and the effect of aggregation is provided in the COGE Handbook.



|3. | Forecast prices and costs
|-- | -------------------------

NI 51-101 defines forecast prices and costs as future
prices and costs that are: (i) generally acceptable as being a reasonable outlook of the future; and (ii) if, and only to the extent that, there are fixed or presently determinable future prices or costs to which we are legally bound by a
contractual or other obligation to supply a physical product, including those for an extension period of a contract that is likely to be extended, those prices or costs rather than the prices and costs referred to in subparagraph (i).

The forecast cost and price assumptions include increases in wellhead selling prices and take into account inflation with respect to future
operating and capital costs. The crude oil, natural gas and natural gas liquids benchmark reference pricing, inflation rates and exchange rates utilized in the Engineering Report are set forth below. The price assumptions set forth below
were provided by Sproule.



A3-7



---

SUMMARY OF PRICING AND INFLATION RATE ASSUMPTIONS

AS OF DECEMBER 31, 2015

FORECAST PRICES AND COSTS



|           |  |                             |       |   |                                          |  |       |                                       |  |  |                            |   |  |                             |       |   |                   |  |      |                  |  |  |                        |   |  |                                   |       |   |                                   |  |        |                           |  |  |     |  |  |  |     |  |  |  |      | 
|---------- |  | --------------------------- | ----- | - | ---------------------------------------- |  | ----- | ------------------------------------- |  |  | -------------------------- | - |  | --------------------------- | ----- | - | ----------------- |  | ---- | ---------------- |  |  | ---------------------- | - |  | --------------------------------- | ----- | - | --------------------------------- |  | ------ | ------------------------- |  |  | --- |  |  |  | --- |  |  |  | ---- | 
|           |  | OIL                         |       |   |                                          |  |       | EDMONTON LIQUIDS PRICES               |  |  |                            |   |  |                             |       |   |                   | 
|Year       |  | WTICushingOklahoma($US/bbl) |       |   | CanadianLight SweetCrude40oAPI($Cdn/bbl) |  |       | WesternCanadaSelect20.5oAPI($Cdn/bbl) |  |  | Cromer LSB35oAPI($Cdn/bbl) |   |  | NATURALGAS AECO($Cdn/MMbtu) |       |   | Propane($Cdn/bbl) |  |      | Butane($Cdn/bbl) |  |  | PentanesPlus($Cdn/bbl) |   |  | OPERATINGCOSTINFLATIONRATES%/year |       |   | CAPITALCOSTINFLATIONRATE(1)%/year |  |        | EXCHANGERATE(2)($US/$Cdn) | 
|           |  |                             |       |   |                                          |  |       |                                       |  |  |                           
|Forecast   |  |                             |       |   |                                          |  |       |                                       |  |  |                            |   |  |                             |       |   |                   |  |      |                  |  |  |                        |   |  |                                   |       |   |                                   |  |        |                           |  |  |     |  |  |  |     |  |  |  |      | 
|2016       |  |                             | 45.00 |   |                                          |  | 55.20 |                                       |  |  | 45.26                      |   |  |                             | 54.20 |   |                   |  | 2.25 |                  |  |  | 9.09                   |   |  |                                   | 39.09 |   |                                   |  | 59.10  |                           |  |  |    |  |  |  |    |  |  |  | 0.75 | 
|2017       |  |                             | 60.00 |   |                                          |  | 69.00 |                                       |  |  | 57.96                      |   |  |                             | 68.00 |   |                   |  | 2.95 |                  |  |  | 13.64                  |   |  |                                   | 51.43 |   |                                   |  | 73.88  |                           |  |  |    |  |  |  | 4.0 |  |  |  | 0.80 | 
|2018       |  |                             | 70.00 |   |                                          |  | 78.43 |                                       |  |  | 65.88                      |   |  |                             | 77.43 |   |                   |  | 3.42 |                  |  |  | 25.84                  |   |  |                                   | 58.46 |   |                                   |  | 83.98  |                           |  |  | 1.5 |  |  |  | 4.0 |  |  |  | 0.83 | 
|2019       |  |                             | 80.00 |   |                                          |  | 89.41 |                                       |  |  | 75.11                      |   |  |                             | 88.41 |   |                   |  | 3.91 |                  |  |  | 35.35                  |   |  |                                   | 66.64 |   |                                   |  | 95.73  |                           |  |  | 1.5 |  |  |  | 4.0 |  |  |  | 0.85 | 
|2020       |  |                             | 81.20 |   |                                          |  | 91.71 |                                       |  |  | 77.03                      |   |  |                             | 90.71 |   |                   |  | 4.20 |                  |  |  | 42.30                  |   |  |                                   | 68.35 |   |                                   |  | 98.19  |                           |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 0.85 | 
|2021       |  |                             | 82.42 |   |                                          |  | 93.08 |                                       |  |  | 78.19                      |   |  |                             | 92.08 |   |                   |  | 4.28 |                  |  |  | 42.94                  |   |  |                                   | 69.38 |   |                                   |  | 99.66  |                           |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 0.85 | 
|2022       |  |                             | 83.65 |   |                                          |  | 94.48 |                                       |  |  | 79.36                      |   |  |                             | 93.48 |   |                   |  | 4.35 |                  |  |  | 43.58                  |   |  |                                   | 70.42 |   |                                   |  | 101.16 |                           |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 0.85 | 
|2023       |  |                             | 84.91 |   |                                          |  | 95.90 |                                       |  |  | 80.55                      |   |  |                             | 94.90 |   |                   |  | 4.43 |                  |  |  | 44.24                  |   |  |                                   | 71.48 |   |                                   |  | 102.68 |                           |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 0.85 | 
|2024       |  |                             | 86.18 |   |                                          |  | 97.34 |                                       |  |  | 81.76                      |   |  |                             | 96.34 |   |                   |  | 4.51 |                  |  |  | 44.90                  |   |  |                                   | 72.55 |   |                                   |  | 104.22 |                           |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 0.85 | 
|2025       |  |                             | 87.48 |   |                                          |  | 98.80 |                                       |  |  | 82.99                      |   |  |                             | 97.80 |   |                   |  | 4.59 |                  |  |  | 45.57                  |   |  |                                   | 73.64 |   |                                   |  | 105.78 |                           |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 0.85 | 
|Thereafter |  |                             | 1.5   | % |                                          |  | 1.5   | %                                     |  |  | 1.5                        | % |  |                             | 1.5   | % |                   |  | 1.5  | %                |  |  | 1.5                    | % |  |                                   | 1.5   | % |                                   |  | 1.5    | %                         |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 0.85 | 

Notes:



|(1) | Capital Cost Inflation based on IHS Upstream Capital Cost Index.
|--- | ----------------------------------------------------------------

|(2) | Exchange rates used to generate the benchmark reference prices in this table.
|--- | -----------------------------------------------------------------------------

Weighted average
actual prices realized, including hedging activities, for the year ended December 31, 2015 were $3.26/Mcf for natural gas, $58.31/bbl for light and medium crude oil, $33.26/bbl for heavy oil and $18.14/bbl for natural gas liquids.



|4. | Future Development Costs
|-- | ------------------------

The following table sets forth development costs deducted in the
estimation of our future net revenue attributable to the reserve categories noted below.



|                                  |  |                           |     |  |                                    |  |       | 
|--------------------------------- |  | ------------------------- | --- |  | ---------------------------------- |  | ----- | 
|                                  |  | Forecast Prices and Costs |    
|Year                              |  | Proved Reserves(MM$)      |     |  | Proved Plus ProbableReserves (MM$) | 
|2016                              |  |                           | 47  |  |                                    |  | 64    | 
|2017                              |  |                           | 77  |  |                                    |  | 118   | 
|2018                              |  |                           | 210 |  |                                    |  | 403   | 
|2019                              |  |                           | 237 |  |                                    |  | 429   | 
|2020                              |  |                           | 104 |  |                                    |  | 368   | 
|2021 and subsequent               |  |                           | 17  |  |                                    |  | 146   | 
|Total: Undiscounted for all years |  |                           | 692 |  |                                    |  | 1,528 | 

We currently expect to fund the development costs of our reserves primarily through internally-generated funds
flow. There can be no guarantee that funds will be available to develop all of our reserves or that we will allocate funding to develop all of the reserves attributed in the Engineering Report. Failure to develop those reserves would have
a negative impact on future production and cash flowand could result in negative revisions to our reserves.



A3-8



---

The interest and other costs of any external funding are not included in our reserves and future net revenue estimates and would reduce reserves and future net revenue to some degree depending
upon the funding sources utilized. We do not currently expect that interest or other funding costs could make development of any of our properties uneconomic.



|5. | Estimated future well abandonment and reclamation costs related to reserve wells have been taken into account by Sproule in determining the aggregate future net revenue therefrom.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|6. | The forecast price and cost assumptions assume the continuance of current laws and regulations.
|-- | -----------------------------------------------------------------------------------------------



|7. | All factual data supplied to Sproule was accepted as represented. No field inspection was conducted.
|-- | ----------------------------------------------------------------------------------------------------



|8. | The estimates of future net revenue presented in the tables above do not represent fair market value.
|-- | -----------------------------------------------------------------------------------------------------

Reconciliations of Changes in Reserves

The following
table sets forth the reconciliation of our gross reserves as at December 31, 2015, using forecast price and cost estimates derived from the Engineering Report.

RECONCILIATION OF

COMPANY GROSS
RESERVES

BY PRODUCT TYPE

FORECAST PRICES AND COSTS



|                       |  |                         |     |   |                          |  |     |                                |  |  |                    |   |  |                      |    |   |                                |  |    |                  |  |  |                    |   |  |                              |      |   |  |  |      |   |  |  |      |  
|---------------------- |  | ----------------------- | --- | - | ------------------------ |  | --- | ------------------------------ |  |  | ------------------ | - |  | -------------------- | -- | - | ------------------------------ |  | -- | ---------------- |  |  | ------------------ | - |  | ---------------------------- | ---- | - |  |  | ---- | - |  |  | ---- | -
|                       |  | LIGHT AND MEDIUM OIL(1) |     |   | HEAVY OIL AND BITUMEN(1) |  |     | NATURAL GAS(1)                 | 
|FACTORS                |  | GrossProved(MMbbl)      |     |   | GrossProbable(MMbbl)     |  |     | GrossProvedPlusProbable(MMbbl) |  |  | GrossProved(MMbbl) |   |  | GrossProbable(MMbbl) |    |   | GrossProvedPlusProbable(MMbbl) |  |    | GrossProved(Bcf) |  |  | GrossProbable(Bcf) |   |  | GrossProvedPlusProbable(Bcf) |     
|                       |  |                         |     |   |                          |  |     |                                | 
|December 31, 2014      |  |                         | 202 |   |                          |  | 96  |                                |  |  | 298                |   |  |                      | 39 |   |                                |  | 38 |                  |  |  | 77                 |   |  |                              | 602  |   |  |  | 289  |   |  |  | 891  |  
|                       |  |                         |     |   |                          |  |     |                                | 
|Extensions             |  |                         |    |   |                          |  |    |                                |  |  |                   |   |  |                      |   |   |                                |  |   |                  |  |  | 1                  |   |  |                              | 1    |   |  |  |     |   |  |  | 1    |  
|Infill drilling        |  |                         |    |   |                          |  |    |                                |  |  |                   |   |  |                      | 2  |   |                                |  | 1  |                  |  |  | 2                  |   |  |                              |     |   |  |  |     |   |  |  |     |  
|Improved Recovery      |  |                         |    |   |                          |  |    |                                |  |  |                   |   |  |                      |   |   |                                |  |   |                  |  |  |                   |   |  |                              |     |   |  |  |     |   |  |  |     |  
|Technical Revisions(2) |  |                         | (44 | ) |                          |  | (41 | )                              |  |  | (85                | ) |  |                      | (2 | ) |                                |  | (1 | )                |  |  | (3                 | ) |  |                              | (108 | ) |  |  | (145 | ) |  |  | (252 | )
|Acquisitions           |  |                         |    |   |                          |  |    |                                |  |  |                   |   |  |                      |   |   |                                |  |   |                  |  |  |                   |   |  |                              |     |   |  |  |     |   |  |  |     |  
|Dispositions           |  |                         | (33 | ) |                          |  | (16 | )                              |  |  | (48                | ) |  |                      |   |   |                                |  |   |                  |  |  |                   |   |  |                              | (34  | ) |  |  | (10  | ) |  |  | (43  | )
|Economic Factors       |  |                         | (7  | ) |                          |  | (4  | )                              |  |  | (10                | ) |  |                      | (2 | ) |                                |  | (1 | )                |  |  | (3                 | ) |  |                              | (49  | ) |  |  | (15  | ) |  |  | (64  | )
|Production             |  |                         | (15 | ) |                          |  |    |                                |  |  | (15                | ) |  |                      | (4 | ) |                                |  |   |                  |  |  | (4                 | ) |  |                              | (60  | ) |  |  |     |   |  |  | (60  | )
|                       |  |                         |     |   |                          |  |     |                                | 
|December 31, 2015      |  |                         | 104 |   |                          |  | 36  |                                |  |  | 141                |   |  |                      | 33 |   |                                |  | 37 |                  |  |  | 70                 |   |  |                              | 353  |   |  |  | 120  |   |  |  | 473  |  



A3-9



---

|                       |  |                        |    |   |                         |  |    |                                |  |  |                    |   |  |                      |     |   |                                |  |     |   |  |  |      |  
|---------------------- |  | ---------------------- | -- | - | ----------------------- |  | -- | ------------------------------ |  |  | ------------------ | - |  | -------------------- | --- | - | ------------------------------ |  | --- | - |  |  | ---- | -
|                       |  | NATURAL GAS LIQUIDS(1) |    |   | TOTAL OIL EQUIVALENT(1) | 
|FACTORS                |  | GrossProved(MMbbl)     |    |   | GrossProbable(MMbbl)    |  |    | GrossProvedPlusProbable(MMbbl) |  |  | GrossProved(MMboe) |   |  | GrossProbable(MMboe) |     |   | GrossProvedPlusProbable(MMboe) | 
|                       |  |                        |    |   |                         | 
|December 31, 2014      |  |                        | 27 |   |                         |  | 12 |                                |  |  | 38                 |   |  |                      | 368 |   |                                |  | 194 |   |  |  | 561  |  
|                       |  |                        |    |   |                         | 
|Extensions             |  |                        |   |   |                         |  |   |                                |  |  |                   |   |  |                      | 1   |   |                                |  |    |   |  |  | 1    |  
|Infill drilling        |  |                        |   |   |                         |  |   |                                |  |  |                   |   |  |                      | 2   |   |                                |  | 1   |   |  |  | 2    |  
|Improved Recovery      |  |                        |   |   |                         |  |   |                                |  |  |                   |   |  |                      |    |   |                                |  |    |   |  |  |     |  
|Technical Revisions(2) |  |                        | (7 | ) |                         |  | (5 | )                              |  |  | (13                | ) |  |                      | (71 | ) |                                |  | (72 | ) |  |  | (142 | )
|Acquisitions           |  |                        |   |   |                         |  |   |                                |  |  |                   |   |  |                      |    |   |                                |  |    |   |  |  |     |  
|Dispositions           |  |                        | (3 | ) |                         |  | (1 | )                              |  |  | (5                 | ) |  |                      | (42 | ) |                                |  | (18 | ) |  |  | (60  | )
|Economic Factors       |  |                        | (2 | ) |                         |  | (1 | )                              |  |  | (2                 | ) |  |                      | (18 | ) |                                |  | (8  | ) |  |  | (26  | )
|Production             |  |                        | (2 | ) |                         |  |   |                                |  |  | (2                 | ) |  |                      | (31 | ) |                                |  |    |   |  |  | (31  | )
|                       |  |                        |    |   |                         | 
|December 31, 2015      |  |                        | 12 |   |                         |  | 4  |                                |  |  | 16                 |   |  |                      | 208 |   |                                |  | 97  |   |  |  | 306  |  

Notes:



|(1) | Columns may not add due to rounding.
|--- | ------------------------------------

|(2) | Technical Revisions include undeveloped locations removed due to changes in future development capital.
|--- | -------------------------------------------------------------------------------------------------------

Additional Information Relating to Reserves Data

Undeveloped Reserves

Undeveloped reserves are
attributed by Sproule in accordance with standards and procedures contained in the COGE Handbook. Undeveloped reserves are those reserves expected to be recovered from known accumulations where a significant expenditure (for example, when
compared to the cost of drilling a well) is required to render them capable of production. Undeveloped reserves must fully meet the requirements of the reserves category (proved or probable) to which they are assigned.

In some cases, it will take longer than two years to develop Penn Wests undeveloped reserves. Penn West plans to develop approximately one-fifth of
the proved undeveloped reserves in the Engineering Report over the next two years and the significant majority of the proved undeveloped reserves over the next five years. Penn West plans to develop approximately 10 percent of the probable
undeveloped reserves in the Engineering Report over the next two years and the significant majority of the probable undeveloped reserves over the next five years. There are a number of factors that could result in delayed or cancelled
development, including the following: (i) changing economic conditions (due to pricing and/or operating and capital expenditure fluctuations); (ii) changing technical conditions (including production anomalies, such as water breakthrough or
accelerated depletion); (iii) multi-zone developments (for instance, a prospective formation completion may be delayed until the initial completion is no longer economic); (iv) a larger development program may need to be spread out over several
years to optimize capital allocation and facility utilization; and (v) surface access issues (including those relating to land owners, weather conditions and regulatory approvals).



A3-10



---

Proved Undeveloped Reserves

The following table discloses, for each product type, the gross volumes of proved undeveloped reserves that were first attributed in each of the most recent
four financial years.



|     |      |  |                             |  |    |                              |  |  |                  |  |  |                       |   |  |                 |  |   |                      |  |  |                 |  |  |                       |     |  |  |  |   |  |  |  |   | 
|---- | ---- |  | --------------------------- |  | -- | ---------------------------- |  |  | ---------------- |  |  | --------------------- | - |  | --------------- |  | - | -------------------- |  |  | --------------- |  |  | --------------------- | --- |  |  |  | - |  |  |  | - | 
|Year |      |  | Light and Medium Oil(MMbbl) |  |    | Heavy Oil and Bitumen(MMbbl) |  |  | Natural Gas(Bcf) |  |  | NGLs(MMbbl)           |  
|     |      |  | FirstAttributed             |  |    | Cumulativeat Year End        |  |  | FirstAttributed  |  |  | Cumulativeat Year End |   |  | FirstAttributed |  |   | Cumulativeat YearEnd |  |  | FirstAttributed |  |  | Cumulativeat Year End |    
|     |      |  |                             |  |    |                              |  | 
|     | 2012 |  |                             |  | 24 |                              |  |  | 76               |  |  |                       | 1 |  |                 |  | 2 |                      |  |  | 24              |  |  |                       | 100 |  |  |  | 2 |  |  |  | 5 | 
|     | 2013 |  |                             |  | 13 |                              |  |  | 72               |  |  |                       | 1 |  |                 |  | 4 |                      |  |  | 25              |  |  |                       | 142 |  |  |  | 1 |  |  |  | 7 | 
|     | 2014 |  |                             |  | 20 |                              |  |  | 67               |  |  |                       |  |  |                 |  | 3 |                      |  |  | 48              |  |  |                       | 162 |  |  |  | 3 |  |  |  | 8 | 
|     | 2015 |  |                             |  |   |                              |  |  | 16               |  |  |                       | 2 |  |                 |  | 2 |                      |  |  |                |  |  |                       | 32  |  |  |  |  |  |  |  | 1 | 

Sproule has assigned 25 MMboe of proved undeveloped reserves in the Engineering Report under forecast prices and costs,
together with $659 million of associated undiscounted future capital expenditures. Proved undeveloped capital spending in the first two forecast years of the Engineering Report accounts for $118 million, or 18 percent, of the total forecast
undiscounted capital expenditures for proved undeveloped reserves. These figures increase to $657 million, or nearly 100 percent, during the first five years of the Engineering Report. The majority of our proved undeveloped reserves evaluated
in the Engineering Report are attributable to future oil development from known pools and enhanced oil recovery projects.

Probable
Undeveloped Reserves

The following table discloses, for each product type, the gross volumes of probable undeveloped reserves that were first
attributed in each of the most recent four financial years.



|     |      |  |                             |  |    |                              |  |  |                  |  |  |                       |    |  |                 |  |    |                       |  |  |                 |  |  |                       |     |  |  |  |   |  |  |  |   | 
|---- | ---- |  | --------------------------- |  | -- | ---------------------------- |  |  | ---------------- |  |  | --------------------- | -- |  | --------------- |  | -- | --------------------- |  |  | --------------- |  |  | --------------------- | --- |  |  |  | - |  |  |  | - | 
|Year |      |  | Light and Medium Oil(MMbbl) |  |    | Heavy Oil and Bitumen(MMbbl) |  |  | Natural Gas(Bcf) |  |  | NGLs(MMbbl)           |   
|     |      |  | FirstAttributed             |  |    | Cumulativeat Year End        |  |  | FirstAttributed  |  |  | Cumulativeat Year End |    |  | FirstAttributed |  |    | Cumulativeat Year End |  |  | FirstAttributed |  |  | Cumulativeat Year End |    
|     |      |  |                             |  |    |                              |  | 
|     | 2012 |  |                             |  | 27 |                              |  |  | 58               |  |  |                       | 24 |  |                 |  | 34 |                       |  |  | 53              |  |  |                       | 184 |  |  |  | 1 |  |  |  | 4 | 
|     | 2013 |  |                             |  | 12 |                              |  |  | 49               |  |  |                       |   |  |                 |  | 31 |                       |  |  | 33              |  |  |                       | 146 |  |  |  | 1 |  |  |  | 4 | 
|     | 2014 |  |                             |  | 18 |                              |  |  | 59               |  |  |                       |   |  |                 |  | 30 |                       |  |  | 32              |  |  |                       | 156 |  |  |  | 2 |  |  |  | 6 | 
|     | 2015 |  |                             |  |   |                              |  |  | 15               |  |  |                       | 1  |  |                 |  | 29 |                       |  |  |                |  |  |                       | 30  |  |  |  |  |  |  |  | 1 | 

Sproule has assigned 50 MMboe of probable undeveloped reserves in the Engineering Report under forecast prices and costs,
together with $833 million of associated undiscounted future capital expenditures. Probable undeveloped capital spending in the first two forecast years of the Engineering Report accounts for $58 million, or 7 percent, of the total forecast
undiscounted future capital expenditures for probable undeveloped reserves. These figures increase to $710 million, or 85 percent, during the first five years of the Engineering Report. The probable undeveloped reserves evaluated in the
Engineering Report are primarily associated with proved undeveloped reserve assignments but have a less likely probability of being recovered than such associated proved undeveloped reserve assignments.

Significant Factors or Uncertainties Affecting Reserves Data

The development schedule for our undeveloped reserves is based on forecast price assumptions for the determination of economic projects. The actual market
prices for oil and natural gas may be significantly lower or higher resulting in some projects being delayed or accelerated, as the case may be. See Risk Factors.

We do not anticipate that any significant economic factors or other significant uncertainties will affect any particular components of our reserves data.
However, our reserves can be affected significantly by fluctuations in product pricing, capital expenditures, operating costs, royalty regimes and well performance that are beyond our control.



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Additional Information Concerning Abandonment and Reclamation Costs

Abandonment and reclamation costs in respect of surface leases, wells, facilities and pipelines (collectively, A&R Costs) are primarily
comprised of abandonment, decommissioning, remediation and reclamation costs. A&R Costs are estimated using our experience conducting annual abandonment and reclamation programs over the past several years, the use of external consultants,
and the use of comparisons to A&R Cost estimates obtained from the Alberta regulatory authorities.

Penn West reviews its suspended or standing well
bores for reactivation, recompletion or sale opportunities. Wellbores that do not meet this criterion become part of our overall wellbore abandonment program. A portion of our A&R Costs are retired every year and facilities are generally
decommissioned subsequent to the time when all the wells producing to them have been abandoned. All of our liability reduction programs take into account seasonal access, high priority and stakeholder issues, and where possible, opportunities
for multi-location programs and continuous operations to reduce costs.

As of December 31, 2015, we expect to incur future A&R Costs in respect of
approximately 13,278 net well bores, 1,745 facilities and 18,673 kilometres of pipelines. On an undiscounted, inflated basis, approximately 59% percent of A&R Costs relate to well bores, 34% percent to facilities and 7% percent to pipelines. The
total amount of A&R Costs, net of estimated salvage values, we expect to incur, including wells that extend beyond the 50-year limit in the Engineering Report, are summarized in the following table:



|                                                    |  |                                                                    |       |  |                                                                         |  |     | 
|--------------------------------------------------- |  | ------------------------------------------------------------------ | ----- |  | ----------------------------------------------------------------------- |  | --- | 
|Period                                              |  | Abandonment and ReclamationCosts Escalated at 2%Undiscounted (MM$) |       |  | Abandonment and ReclamationCosts Escalated at 2%Discounted at 10% (MM$) | 
|Total liability as at December 31, 2015             |  |                                                                    | 3,425 |  |                                                                         |  | 133 | 
|Anticipated to be paid in 2016                      |  |                                                                    | 21    |  |                                                                         |  | 21  | 
|Anticipated to be paid in 2017                      |  |                                                                    | 22    |  |                                                                         |  | 20  | 
|Anticipated to be paid in 2018                      |  |                                                                    | 23    |  |                                                                         |  | 19  | 
|Total anticipated to be paid in 2016, 2017 and 2018 |  |                                                                    | 66    |  |                                                                         |  | 60  | 

The above table includes certain A&R Costs, net of estimated salvage values, not included in the Engineering Report and
not deducted in estimating future net revenue as disclosed above. Escalated at two percent and undiscounted, the A&R Costs deducted were $547 million, and escalated at two percent and discounted at 10 percent, these A&R Costs were
$15 million.

OTHER OIL AND GAS INFORMATION

Description of Our Properties, Operations and Activities in Our Major Operating Regions

Introduction

Penn West participates in the
exploration for, and the development and production of, oil and natural gas principally in western Canada. Our portfolio of properties as at December 31, 2015 includes both unitized and non-unitized oil and natural gas production. In
general, the properties contain long-life, low-decline-rate reserves and include interests in several major oil and gas fields. The majority of our proved plus probable reserves are located in Canada in Alberta, British Columbia, Saskatchewan.

Major Operating Regions

Our production and
reserves are attributed to approximately 110 producing properties. No single property accounts for more than 13 percent of our proved plus probable reserves. Penn Wests operations are currently focused on light-oil development.



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The following map illustrates Penn Wests major operating regions as at December 31, 2015.



LOGO

The following is a description of our principal oil and natural gas properties and related operations and activities as at
December 31, 2015. Information in respect of gross and net acres and well counts are as of December 31, 2015 and information in respect of production is for the year ended December 31, 2015, except where indicated
otherwise. The estimates of reserves and future net revenue for individual properties may not reflect the same confidence level as estimates of reserves and future net revenue for all properties, due to the effects of aggregation.

Cardium Resource Play

The Cardium resource play is
located in west central Alberta and extends over 300 kilometers from Calgary to Grande Prairie, Alberta. At December 31, 2015, Penn West had approximately 675,000 net acres of developed and undeveloped land in this resource play. Penn
Wests holdings in the Cardium include significant interests within the core of the play, particularly in the Willesden Green and Pembina areas. In 2015, development activity was focused in both these areas, with approximately $225 million of
development capital spending resulting in a total of 56 net operated wells being drilled. In 2016, the Cardiumcapital budget is expected to be minimal, in response to the weak commodity price environment as the Company targets it capital
expenditures to be within funds flow from operations.

Viking Resource Play

The Viking resource play is comprised of two distinct areas, with those being the Viking oil play in western Saskatchewan and the combined oil and natural gas
resource directly across the border in eastern Alberta. At December 31, 2015, Penn West has a significant land position within the play totaling approximately 530,000 net acres of developed and undeveloped land. In 2015, Penn West invested
approximately $115 million of development capital in the area resulting in 105 net operated wells drilled, all of which were in the Dodsland area. Penn Wests 2016 total capital budget is minimal in response to the weak commodity price
environment with the majority of activity being attributed to finalizing the completion and tie-in operations of wells drilled in late 2015.



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Slave Point Resource Play

The Slave Point resource play is a tight, light-oil play situated north and northwest of Edmonton that extends through north-central Alberta. At
December 31, 2015, Penn West had approximately 190,000 net acres of developed and undeveloped land in this resource play. In 2015, Penn West completed technical assessments and further appraisal in the area with one well drilled in each of Sawn
Lake and Otter. For 2016, in response to the low commodity price environment, the Company has no development capital activity planned in the area, however, it will continue to assess and monitor production results.

Enhanced Oil Recovery

Enhanced oil recovery remains an
important cornerstone of long-term resource development and value creation for Penn West. In 2015, Penn West continued to review integrated EOR strategies in each of its core areas, which is expected to lead to further recovery improvements and
mitigate declines. Additionally, ongoing optimization of existing waterfloods is expected to extract additional low cost production volumes and reserves. In 2016, as the Companys capital budget is limited it plans to complete additional
technical analysis on potential water flood technologies and schemes.

Additional Information

None of our important properties, plants, facilities or installations are subject to any material statutory or other mandatory relinquishments, surrenders,
back-ins or changes in ownership.

We do not have any important properties to which reserves have been attributed and which are capable of producing but
which are not producing.

2016 Capital Budget

In January 2016, the Company announced its 2016 capital budget of $50 million. This capital budget was consistent with the strategy announced on
September 1, 2015, which limits our total expenditures to funds flow from operations, in response to the current weak commodity price environment. The Companys average production guidance for 2016 was also set at 60,000 to 64,000 boe per
day.

The primary components of our programs are described above under the heading Major Operating Regions. See also Description of our
Business  General Development of the Business  2016 Developments  2016 Capital Expenditure Budget and Production.

Oil And Gas
Wells

The following table sets forth the number and status of wells in which we had a working interest as at December 31, 2015.



|                      |  |           |       |  |               |  |       |       |  |  |       |  |  |       |       |  |     |  |       |       |  |  |       |  |  |  |        |  |  |  |        | 
|--------------------- |  | --------- | ----- |  | ------------- |  | ----- | ----- |  |  | ----- |  |  | ----- | ----- |  | --- |  | ----- | ----- |  |  | ----- |  |  |  | ------ |  |  |  | ------ | 
|                      |  | Producing |       |  | Non-Producing |  |       | Total | 
|                      |  | Oil       |       |  | Gas           |  |       |       |  |  |       | 
|                      |  | Gross     |       |  | Net           |  |       | Gross |  |  | Net   |  |  | Gross |       |  | Net |  |       | Gross |  |  | Net   | 
|                      |  |           |       |  |               |  |       |      
|Alberta               |  |           | 5,401 |  |               |  | 3,565 |       |  |  | 2,178 |  |  |       | 1,417 |  |     |  | 5,582 |       |  |  | 3,743 |  |  |  | 13,161 |  |  |  | 8,725  | 
|British Columbia      |  |           | 125   |  |               |  | 49    |       |  |  | 671   |  |  |       | 277   |  |     |  | 585   |       |  |  | 260   |  |  |  | 1,381  |  |  |  | 586    | 
|Saskatchewan          |  |           | 2,515 |  |               |  | 2,365 |       |  |  | 309   |  |  |       | 240   |  |     |  | 1,395 |       |  |  | 1,267 |  |  |  | 4,219  |  |  |  | 3,872  | 
|Northwest Territories |  |           | 11    |  |               |  | 2     |       |  |  |      |  |  |       |      |  |     |  | 31    |       |  |  | 5     |  |  |  | 42     |  |  |  | 7      | 
|Wyoming               |  |           | 95    |  |               |  | 32    |       |  |  |      |  |  |       |      |  |     |  | 175   |       |  |  | 56    |  |  |  | 270    |  |  |  | 88     | 
|                      |  |           |       |  |               |  |       |       |  |  |       |  |  |       |       |  |     |  |       |       |  |  |       |  |  |  |        |  |  |  |        | 
|Total                 |  |           | 8,147 |  |               |  | 6,013 |       |  |  | 3,158 |  |  |       | 1,934 |  |     |  | 7,768 |       |  |  | 5,331 |  |  |  | 19,073 |  |  |  | 13,278 | 
|                      |  |           |       |  |               |  |       |       |  |  |       |  |  |       |       |  |     |  |       |       |  |  |       |  |  |  |        |  |  |  |        | 



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Properties with no Attributed Reserves

The following table sets out the unproved properties in which we had an interest as at December 31, 2015.



|                      |  |                                         |       |  |     |  |       | 
|--------------------- |  | --------------------------------------- | ----- |  | --- |  | ----- | 
|                      |  | Unproved Properties(thousands of acres) |      
|                      |  | Gross                                   |       |  | Net | 
|                      |  |                                        
|Alberta               |  |                                         | 1,184 |  |     |  | 860   | 
|British Columbia      |  |                                         | 521   |  |     |  | 244   | 
|Manitoba              |  |                                         | 82    |  |     |  | 82    | 
|Saskatchewan          |  |                                         | 84    |  |     |  | 76    | 
|Northwest Territories |  |                                         | 85    |  |     |  | 18    | 
|Wyoming               |  |                                         | 4     |  |     |  | 1     | 
|                      |  |                                         |       |  |     |  |       | 
|Total                 |  |                                         | 1,960 |  |     |  | 1,281 | 

We currently have no material work commitments on these lands. The primary lease or extension term on approximately
38,000 net acres of unproved property is scheduled to expire by December 31, 2016. The right to explore, develop and exploit these leases will be surrendered unless we qualify them for continuation based on production, drilling or
technical mapping.

Significant Factors or Uncertainties Relevant to Properties With No Attributed Reserves

The development of properties with no attributed reserves can be affected by a number of factors including, but not limited to, project economics, forecasted
price assumptions, cost estimates, well type expectations and access to infrastructure. These and other factors could lead to the delay or the acceleration of projects related to these properties.

Tax Horizon

The most important variables that will
determine the level of cash taxes incurred by us in a given year will be the price of crude oil and natural gas, our capital spending levels, the nature and extent of acquisition and disposition activities and the amount of tax pools available to
us. We currently estimate that we will not be required to pay income taxes for the foreseeable future. However, if crude oil and natural gas prices were to strengthen beyond the levels anticipated by the current forward market, our tax
pools would be utilized more quickly and we may experience higher than expected cash taxes or payment of such taxes in an earlier time period. However, we emphasize that it is difficult to give guidance on future taxability as we operate within an
industry where various factors constantly change our outlook, including factors such as acquisitions, divestments, capital spending levels, operating cost levels and commodity price changes.



A3-15



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Capital Expenditures

The following table summarizes capital expenditures related to our activities for the year ended December 31, 2015, irrespective of whether such costs
were capitalized or charged to expense when incurred.



|                               |  |         |      |  
|------------------------------ |  | ------- | ---- | -
|                               |  | 2015MM$ |     
|                               | 
|Property Acquisition Costs(1)  |  |         |      |  
|Proved Properties              |  |         | (800 | )
|Unproved Properties            |  |         | 2    |  
|Exploration Costs(1)           |  |         | 12   |  
|Development Costs(1)           |  |         | 482  |  
|Corporate Costs                |  |         | 5    |  
|Joint venture, carried capital |  |         | (31  | )
|                               |  |         |      |  
|Total Capital Expenditures     |  |         | (330 | )
|Corporate Acquisitions         |  |         |     |  
|                               |  |         |      |  
|Total Expenditures             |  |         | (330 | )
|                               |  |         |      |  

Note:



|(1) | Property Acquisition Costs, Proved Properties, Unproved Properties, Exploration Costs and Development Costs have the meanings ascribed thereto in the COGE
Handbook.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Exploration and Development Activities

The following table sets forth the gross and net exploratory and development wells that we participated in during the year ended December 31, 2015.



|                   |  |                   |    |  |                   |  |   |       |  |  |     |  |  |  |     | 
|------------------ |  | ----------------- | -- |  | ----------------- |  | - | ----- |  |  | --- |  |  |  | --- | 
|                   |  | Exploratory Wells |    |  | Development Wells | 
|                   |  | Gross             |    |  | Net               |  |   | Gross |  |  | Net | 
|Oil                |  |                   | 10 |  |                   |  | 3 |       |  |  | 201 |  |  |  | 174 | 
|Natural Gas        |  |                   |   |  |                   |  |  |       |  |  |    |  |  |  |    | 
|Service            |  |                   |   |  |                   |  |  |       |  |  |    |  |  |  |    | 
|Stratigraphic test |  |                   | 1  |  |                   |  | 1 |       |  |  |    |  |  |  |    | 
|                   |  |                   |    |  |                   |  |   |       |  |  |     |  |  |  |     | 
|Total              |  |                   | 11 |  |                   |  | 4 |       |  |  | 201 |  |  |  | 174 | 
|                   |  |                   |    |  |                   |  |   |       |  |  |     |  |  |  |     | 



A3-16



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Production Estimates

The following table sets out the volume of our production estimated for the year ended December 31, 2016 which is reflected in the estimates of gross
proved reserves and gross probable reserves disclosed in the tables contained under Disclosure of Reserves Data above.



|                               |  |                     |        |  |                      |  |        |             |  |  |                    |  |  |                      |        |  |     |  |         |       |  |  |         |  |  |       |       |  |     |  |       |  |  |  |        |  |  |  |        | 
|------------------------------ |  | ------------------- | ------ |  | -------------------- |  | ------ | ----------- |  |  | ------------------ |  |  | -------------------- | ------ |  | --- |  | ------- | ----- |  |  | ------- |  |  | ----- | ----- |  | --- |  | ----- |  |  |  | ------ |  |  |  | ------ | 
|                               |  | Light and MediumOil |        |  | Heavy Oil andBitumen |  |        | Natural Gas |  |  | Natural GasLiquids |  |  | Total Oil Equivalent |       
|                               |  | (bbl/d)             |        |  | (bbl/d)              |  |        | (Mcf/d)     |  |  | (bbl/d)            |  |  | (boe/d)              |       
|                               |  | Gross               |        |  | Net                  |  |        | Gross       |  |  | Net                |  |  | Gross                |        |  | Net |  |         | Gross |  |  | Net     |  |  | Gross |       |  | Net | 
|Proved Developed Producing     |  |                     | 26,990 |  |                      |  | 24,990 |             |  |  | 11,132             |  |  |                      | 10,221 |  |     |  | 103,784 |       |  |  | 92,975  |  |  |       | 3,630 |  |     |  | 2,772 |  |  |  | 59,050 |  |  |  | 53,479 | 
|Proved Developed Non-Producing |  |                     | 652    |  |                      |  | 557    |             |  |  | 6                  |  |  |                      | 5      |  |     |  | 2,503   |       |  |  | 2,246   |  |  |       | 114   |  |     |  | 86    |  |  |  | 1,189  |  |  |  | 1,022  | 
|Proved Undeveloped             |  |                     | 513    |  |                      |  | 457    |             |  |  | 793                |  |  |                      | 785    |  |     |  | 579     |       |  |  | 546     |  |  |       | 12    |  |     |  | 11    |  |  |  | 1,415  |  |  |  | 1,344  | 
|                               |  |                     |        |  |                      |  |        |             |  |  |                    |  |  |                      |        |  |     |  |         |       |  |  |         |  |  |       |       |  |     |  |       |  |  |  |        |  |  |  |        | 
|Total Proved                   |  |                     | 28,155 |  |                      |  | 26,004 |             |  |  | 11,931             |  |  |                      | 11,011 |  |     |  | 106,861 |       |  |  | 95,765  |  |  |       | 3,757 |  |     |  | 2,869 |  |  |  | 61,653 |  |  |  | 55,845 | 
|Total Probable                 |  |                     | 2,051  |  |                      |  | 1,811  |             |  |  | 1,088              |  |  |                      | 1,036  |  |     |  | 6,410   |       |  |  | 5,822   |  |  |       | 202   |  |     |  | 161   |  |  |  | 4,409  |  |  |  | 3,979  | 
|                               |  |                     |        |  |                      |  |        |             |  |  |                    |  |  |                      |        |  |     |  |         |       |  |  |         |  |  |       |       |  |     |  |       |  |  |  |        |  |  |  |        | 
|Total Proved Plus Probable     |  |                     | 30,206 |  |                      |  | 27,815 |             |  |  | 13,019             |  |  |                      | 12,048 |  |     |  | 113,270 |       |  |  | 101,587 |  |  |       | 3,959 |  |     |  | 3,030 |  |  |  | 66,062 |  |  |  | 59,824 | 
|                               |  |                     |        |  |                      |  |        |             |  |  |                    |  |  |                      |        |  |     |  |         |       |  |  |         |  |  |       |       |  |     |  |       |  |  |  |        |  |  |  |        | 

No one field (being a defined geographical area consisting of one or more pools) accounts for more than 13percent of
the estimated production on a proved plus probable basis disclosed above. For more information, see Other Oil and Gas Information Description of Our Properties, Operations and Activities in Our Major Operating
Regions.



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Production History

The following table summarizes certain information in respect of our share of average gross daily production volumes, average net product prices received,
royalties paid, production costs, transportation costs, risk management contracts loss (gain), and resulting netbacks for the periods indicated below:



|                                        |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|--------------------------------------- |  | ------------------ | ------ | - | -------------------------- |  | ------ | ------------ |  |  | ----------- | - |  |  | ------ | - |  |  | ------ | -
|                                        |  | Quarter Ended 2015 |        |   | Year EndedDecember 31,2015 | 
|                                        |  | March 31           |        |   | June 30                    |  |        | September 30 |  |  | December 31 |   | 
|Share of Average Gross Daily Production |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|Light and Medium Crude Oil (bbl/d)      |  |                    | 45,855 |   |                            |  | 44,195 |              |  |  | 39,052      |   |  |  | 37,063 |   |  |  | 41,510 |  
|Heavy Oil (bbl/d)                       |  |                    | 12,895 |   |                            |  | 11,947 |              |  |  | 11,153      |   |  |  | 11,962 |   |  |  | 11,984 |  
|Gas (MMcf/d)                            |  |                    | 177    |   |                            |  | 168    |              |  |  | 161         |   |  |  | 144    |   |  |  | 163    |  
|NGLs (bbl/d)                            |  |                    | 6,593  |   |                            |  | 7,080  |              |  |  | 5,118       |   |  |  | 4,314  |   |  |  | 5,769  |  
|Combined (boe/d)                        |  |                    | 94,905 |   |                            |  | 91,164 |              |  |  | 82,198      |   |  |  | 77,398 |   |  |  | 86,357 |  
|                                        |  |                    |        |   |                           
|Average Net Production Prices Received  |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|Light and Medium Crude Oil ($/bbl)      |  |                    | 49.82  |   |                            |  | 64.56  |              |  |  | 52.60       |   |  |  | 50.20  |   |  |  | 54.48  |  
|Heavy Oil ($/bbl)                       |  |                    | 30.20  |   |                            |  | 46.44  |              |  |  | 31.20       |   |  |  | 25.40  |   |  |  | 33.26  |  
|Gas ($/Mcf)                             |  |                    | 3.08   |   |                            |  | 2.78   |              |  |  | 2.99        |   |  |  | 2.54   |   |  |  | 2.86   |  
|NGLs ($/bbl)                            |  |                    | 20.31  |   |                            |  | 17.40  |              |  |  | 15.24       |   |  |  | 19.53  |   |  |  | 18.14  |  
|Combined ($/boe)                        |  |                    | 35.34  |   |                            |  | 43.84  |              |  |  | 36.05       |   |  |  | 33.80  |   |  |  | 37.40  |  
|                                        |  |                    |        |   |                           
|Royalties Paid                          |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|Light and Medium Crude Oil ($/bbl)      |  |                    | 6.32   |   |                            |  | 4.82   |              |  |  | 4.28        |   |  |  | 6.90   |   |  |  | 5.57   |  
|Heavy Oil ($/bbl)                       |  |                    | 4.18   |   |                            |  | 4.15   |              |  |  | 2.16        |   |  |  | 3.57   |   |  |  | 3.55   |  
|Gas ($/Mcf)                             |  |                    | (0.02  | ) |                            |  | 0.81   |              |  |  |            |   |  |  | 0.06   |   |  |  | 0.22   |  
|NGLs ($/bbl)                            |  |                    | 10.22  |   |                            |  | 4.60   |              |  |  | 6.16        |   |  |  | 7.32   |   |  |  | 7.05   |  
|Combined ($/boe)                        |  |                    | 4.30   |   |                            |  | 4.72   |              |  |  | 2.72        |   |  |  | 4.39   |   |  |  | 4.05   |  
|                                        |  |                    |        |   |                           
|Production Costs(1)(2)                  |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|Light and Medium Crude Oil ($/bbl)      |  |                    | 25.77  |   |                            |  | 26.38  |              |  |  | 28.02       |   |  |  | 22.28  |   |  |  | 25.68  |  
|Heavy Oil ($/bbl)                       |  |                    | 21.21  |   |                            |  | 18.06  |              |  |  | 23.32       |   |  |  | 15.72  |   |  |  | 19.54  |  
|Gas ($/Mcf)                             |  |                    | 1.95   |   |                            |  | 1.82   |              |  |  | 2.25        |   |  |  | 2.32   |   |  |  | 2.07   |  
|NGLs ($/bbl)                            |  |                    |       |   |                            |  |       |              |  |  |            |   |  |  |       |   |  |  |       |  
|Combined ($/boe)                        |  |                    | 18.97  |   |                            |  | 18.51  |              |  |  | 20.89       |   |  |  | 17.43  |   |  |  | 18.96  |  
|                                        |  |                    |        |   |                           
|Transportation                          |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|Light and Medium Crude Oil ($/bbl)      |  |                    | 1.06   |   |                            |  | 1.20   |              |  |  | 1.19        |   |  |  | 1.09   |   |  |  | 1.13   |  
|Heavy Oil ($/bbl)                       |  |                    | 1.39   |   |                            |  | 2.05   |              |  |  | 2.28        |   |  |  | 2.20   |   |  |  | 1.96   |  
|Gas ($/Mcf)                             |  |                    | 0.35   |   |                            |  | 0.30   |              |  |  | 0.35        |   |  |  | 0.37   |   |  |  | 0.34   |  
|NGLs ($/bbl)                            |  |                    |       |   |                            |  |       |              |  |  |            |   |  |  |       |   |  |  |       |  
|Combined ($/boe)                        |  |                    | 1.35   |   |                            |  | 1.40   |              |  |  | 1.55        |   |  |  | 1.55   |   |  |  | 1.46   |  
|                                        |  |                    |        |   |                           
|Risk Management Contracts Loss (Gain)   |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|Light and Medium Crude Oil ($/bbl)      |  |                    | (2.15  | ) |                            |  | 1.31   |              |  |  | (5.82       | ) |  |  | (9.82  | ) |  |  | (3.83  | )
|Heavy Oil ($/bbl)                       |  |                    |       |   |                            |  |       |              |  |  |            |   |  |  |       |   |  |  |       |  
|Gas ($/Mcf)                             |  |                    | (1.28  | ) |                            |  | (0.08  | )            |  |  | (0.03       | ) |  |  | (0.10  | ) |  |  | (0.40  | )
|NGLs ($/bbl)                            |  |                    |       |   |                            |  |       |              |  |  |            |   |  |  |       |   |  |  |       |  
|Combined ($/boe)                        |  |                    | (3.44  | ) |                            |  | 0.49   |              |  |  | (2.83       | ) |  |  | (4.89  | ) |  |  | (2.59  | )
|                                        |  |                    |        |   |                           
|Netback Received(3)                     |  |                    |        |   |                            |  |        |              |  |  |             |   |  |  |        |   |  |  |        |  
|Light and Medium Crude Oil ($/bbl)      |  |                    | 18.82  |   |                            |  | 30.84  |              |  |  | 24.93       |   |  |  | 29.75  |   |  |  | 25.92  |  
|Heavy Oil ($/bbl)                       |  |                    | 3.42   |   |                            |  | 22.18  |              |  |  | 3.44        |   |  |  | 3.91   |   |  |  | 8.21   |  
|Gas ($/Mcf)                             |  |                    | 2.08   |   |                            |  | (0.07  | )            |  |  | 0.42        |   |  |  | (0.11  | ) |  |  | 0.63   |  
|NGLs ($/bbl)                            |  |                    | 10.09  |   |                            |  | 12.80  |              |  |  | 9.08        |   |  |  | 12.22  |   |  |  | 11.09  |  
|Combined ($/boe)                        |  |                    | 14.16  |   |                            |  | 18.72  |              |  |  | 13.72       |   |  |  | 15.32  |   |  |  | 15.52  |  

Notes:



|(1) | Operating expenses are comprised of direct costs incurred to operate both oil and gas wells. A number of assumptions are required to allocate these costs between oil, natural gas and natural gas liquids production.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



A3-18



---

|(2) | Operating overhead recoveries associated with operated properties are charged to operating costs and accounted for as a reduction to general and administrative costs.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Netbacks are calculated by subtracting royalties, operating costs, transportation costs and losses/gains on commodity and foreign exchange contracts from revenues.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

During the year ended December 31, 2015, Penn West produced 32 MMboe, comprised of 15 MMbbl of light and medium oil, 4 MMbbl of heavy oil, 60 Bcf of
natural gas and 2 MMbbl of natural gas liquids.

Marketing Arrangements

Our marketing approach incorporates the following primary objectives:



| |  |  | Ensure security of market and avoid production shut-ins due to marketing constraints by dealing with end-users or regionally strategic counterparties wherever possible.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Ensure competitive pricing by managing pricing exposures through a portfolio of various terms and geographic basis.
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | Ensure optimization of netbacks through careful management of transportation obligations, facility utilization levels, blending opportunities and emulsion handling.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Ensure protection of our receivables by, whenever possible, dealing only with credit worthy counterparties who have been subjected to regular credit reviews.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------

Oil and Liquids Marketing

Of our liquids
production in 2015, approximately 70% percent was light and medium oil, 20% percent was conventional heavy oil and 10% percent was NGLs. In regard specifically to crude oil, our average quality was 32 degrees API, which was comprised of an average
quality for our light and medium oil of 38 degrees API and an average quality for our conventional heavy oil of 11 degrees API.

To reduce risk, we market
the majority of our production to large credit-worthy counterparties or end-users on varying term contracts. Where possible we aggregate our oil on pipelines and sell on a stream basis to maximize flexibility and reduce incremental costs. We
actively manage our heavy oil sales by finding opportunities to optimize netbacks through ongoing evaluation of both pipeline and rail sales opportunities based on market conditions.

The following table summarizes the net product price received for our production of conventional light and medium oil (including NGLs) and our conventional
heavy oil, before adjustments for hedging activities, for the periods indicated:



|              |  |                                    |       |  |                  |  |       |                                    |  |  |                  |  |  |                                    |       |  |                  |  |       |  |  |  |       | 
|------------- |  | ---------------------------------- | ----- |  | ---------------- |  | ----- | ---------------------------------- |  |  | ---------------- |  |  | ---------------------------------- | ----- |  | ---------------- |  | ----- |  |  |  | ----- | 
|              |  | 2015                               |       |  | 2014             |  |       | 2013                               | 
|Quarter Ended |  | Light andMedium Oiland NGLs($/bbl) |       |  | Heavy Oil($/bbl) |  |       | Light andMedium Oiland NGLs($/bbl) |  |  | Heavy Oil($/bbl) |  |  | Light andMedium Oiland NGLs($/bbl) |       |  | Heavy Oil($/bbl) | 
|              |  |                                    |       |  |                  | 
|March 31      |  |                                    | 46.11 |  |                  |  | 30.20 |                                    |  |  | 92.69            |  |  |                                    | 69.38 |  |                  |  | 81.26 |  |  |  | 50.86 | 
|June 30       |  |                                    | 58.05 |  |                  |  | 46.44 |                                    |  |  | 95.22            |  |  |                                    | 79.56 |  |                  |  | 83.68 |  |  |  | 67.22 | 
|September 30  |  |                                    | 48.28 |  |                  |  | 31.20 |                                    |  |  | 88.46            |  |  |                                    | 72.59 |  |                  |  | 93.38 |  |  |  | 84.13 | 
|December 31   |  |                                    | 47.00 |  |                  |  | 25.40 |                                    |  |  | 68.18            |  |  |                                    | 54.35 |  |                  |  | 78.46 |  |  |  | 58.78 | 



A3-19



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Natural Gas Marketing

In 2015, we received an average price from the sale of natural gas, before adjustments for hedging activities, of $2.86 per mcf compared to $4.78 per mcf
realized in 2014. Approximately 95 percent of our natural gas sales are marketed directly, with the balance of natural gas sales sold either at the plantgate or in aggregator pools. We continue to maintain a significant weighting to the
Alberta market which is one of the largest and most liquid market hubs in North America, but have also diversified with 28% of our gas portfolio sold into the US Midwest market.

We continue to conservatively manage our transportation costs. Transportation on all pipelines is closely balanced to supply, and market commitments.

Forward Contracts

We are exposed to market
risks resulting from fluctuations in commodity prices, foreign exchange rates and interest rates in the normal course of operations. In accordance with policies approved by our Board of Directors, we may, from time to time, manage these risks
through the use of swaps, collars or other financial instruments. Commodity price risk may be hedged up to a maximum of50 percent of forecast sales volumes, net of royalties, for the balance of any current year and one year following
and up to 25 percent of forecast sales volumes, net of royalties, for one additional year thereafter. Subject to the Boards approval, our hedging limits may be increased above the maximum limits. This policy is reviewed by management and our
Board of Directors from time to time and amended as necessary.

We are also exposed to losses in the event of default by the counterparties to these
derivative instruments. We manage this risk by diversifying our hedging portfolio among a number of counterparties, primarily parties within our banking syndicate, whom we consider to be financially sound.

As at December 31, 2015, we were not bound by any agreement (including a transportation agreement), directly or through an aggregator, under which we may
be precluded from fully realizing, or may be protected from the full effect of, future market prices for oil or natural gas, except for agreements disclosed by us in Notes 11 and 19 to our audited consolidated financial statements as at and for the
year ended December 31, 2015, which have been filed on SEDAR at www.sedar.com.

Our transportation obligations and commitments for future
physical deliveries of crude oil and natural gas do not exceed our expected related future production from our proved reserves, estimated using forecast prices and costs, as disclosed herein.



A3-20



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APPENDIX B

MANDATE OF THE AUDIT COMMITTEE



|1. | PURPOSE
|-- | -------

The purpose of the Audit Committee (the Committee) of the board of directors
(the Board) of Penn West Petroleum Ltd. (Penn West or the Company) is to assist the Board in fulfilling its responsibility for oversight of the integrity of Penn Wests consolidated
financial statements, Penn Wests compliance with legal and regulatory requirements, the qualifications and independence of Penn Wests independent auditors, and the performance of Penn Wests internal audit function, if any.

The objectives of the Committee are as follows:



|(a) | To assist the Board in meeting its responsibilities (especially for accountability) in respect of the preparation and disclosure of the consolidated financial statements of Penn West and related matters;
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(b) | To provide better communication between directors and independent auditors;
|--- | ---------------------------------------------------------------------------



|(c) | To assist the Board in meeting its responsibilities regarding the oversight of the independent auditors qualifications and independence;
|--- | -----------------------------------------------------------------------------------------------------------------------------------------



|(d) | To assist the Board in meeting its responsibilities regarding the oversight of the credibility, integrity and objectivity of financial reports;
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------



|(e) | To strengthen the role of the non-management directors by facilitating discussions between directors on the Committee, management and independent auditors;
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



|(f) | To assist the Board in meeting its responsibilities regarding the oversight of the performance of Penn Wests independent auditors and internal audit function (if any); and
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(g) | To assist the Board in meeting its responsibilities regarding the oversight of Penn Wests compliance with legal and regulatory requirements.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------



|2. | SPECIFIC DUTIES AND RESPONSIBILITIES
|-- | ------------------------------------

Subject to the powers and duties of the Board, the Committee will
perform the following duties:



|(a) | Satisfy itself on behalf of the Board that the Companys internal control systems are sufficient to reasonably ensure that:
|--- | ---------------------------------------------------------------------------------------------------------------------------



| | (i) | controllable, material business risks are identified, monitored and mitigated where it is determined cost effective to do so;
| | --- | -----------------------------------------------------------------------------------------------------------------------------



| | (ii) | internal controls over financial reporting are sufficient to meet the requirements under National Instrument 52-109 Certification of Disclosure in Issuers Annual and Interim Filings and the United
States Securities Exchange Act of 1934, as amended, and
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | there is compliance with legal, ethical and regulatory requirements.
| | ----- | --------------------------------------------------------------------



|(b) | Review the annual and interim financial statements of the Company prior to their submission to the Board for approval. The process should include, but not be limited to:
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | review of changes in accounting principles, or in their application, which may have a material impact on the current or future years financial statements;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | review of significant accruals, reserves or other estimates such as the ceiling test calculation;
| | ---- | -------------------------------------------------------------------------------------------------



| | (iii) | review of accounting treatment of unusual or non-recurring transactions;
| | ----- | ------------------------------------------------------------------------



| | (iv) | review of compliance with covenants under loan agreements;
| | ---- | ----------------------------------------------------------



| | (v) | review of asset retirement obligations recommended by the Health, Safety, Environment and Regulatory Committee;
| | --- | ---------------------------------------------------------------------------------------------------------------



---

| | (vi) | review of disclosure requirements for commitments and contingencies;
| | ---- | --------------------------------------------------------------------



| | (vii) | review of adjustments raised by the independent auditors, whether or not included in the financial statements;
| | ----- | --------------------------------------------------------------------------------------------------------------



| | (viii) | review of unresolved differences between management and the independent auditors, if any;
| | ------ | -----------------------------------------------------------------------------------------



| | (ix) | review of reasonable explanations of significant variances with comparative reporting periods; and
| | ---- | --------------------------------------------------------------------------------------------------



| | (x) | determination through inquiry if there are any related party transactions and ensure the nature and extent of such transactions are properly disclosed.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------



|(c) | Review, discuss and recommend for approval by the Board the annual and interim financial statements and related information included in prospectuses, management discussion and analysis, information circular-proxy
statements and annual information forms, prior to recommending Board approval.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(d) | Discuss Penn Wests interim results press releases, as well as financial information and earnings guidance provided to analysts and rating agencies (provided that the Committee is not required to review and discuss
investor presentations that do not contain financial information or earnings guidance that has not previously been generally disclosed to the public).
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(e) | With respect to the appointment of independent auditors by the Board, the Committee shall:
|--- | ------------------------------------------------------------------------------------------



| | (i) | on an annual basis, review and discuss with the auditors all relationships the auditors have with Penn West to determine the auditors independence, ensure the rotation of partners on the audit engagement team in
accordance with applicable law and, in order to ensure continuing auditor independence, consider the rotation of the audit firm itself;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | be directly responsible for overseeing the work of the independent auditors engaged for the purpose of issuing an auditors report or performing other audit, review or attest services for Penn West, including the
resolution of disagreements between management and the independent auditor regarding financial reporting, and the independent auditors shall report directly to the Committee;
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | review and evaluate the performance of the lead partner of the independent auditors;
| | ----- | ------------------------------------------------------------------------------------



| | (iv) | review the basis of managements recommendation for the appointment of independent auditors and recommend to the Board appointment of independent auditors and their compensation;
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (v) | review the terms of engagement and the overall audit plan (including the materiality levels to be applied) of the independent auditors, including the appropriateness and reasonableness of the auditors fees;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vi) | when there is to be a change in auditors, review the issues related to the change and the information to be included in the required notice to securities regulators of such change; and
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vii) | review and pre-approve any audit and permitted non-audit services to be provided by the independent auditors firm and consider the impact on the independence of the auditors.
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(f) | The Committee may delegate to one or more members of the Committee authority to pre-approve non-audit services in satisfaction of 2(e)(vii) above and if such delegation occurs, the pre-approval of non-audit services by
the Committee member to whom authority has been delegated must be presented to the Committee at its first scheduled meeting following such pre-approval. The Committee shall be entitled to adopt specific policies and procedures for the
engagement of non-audit services if:
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | the pre-approval policies and procedures are detailed as to the particular service;
| | --- | -----------------------------------------------------------------------------------



| | (ii) | the Committee is informed of each non-audit service so approved; and
| | ---- | --------------------------------------------------------------------



| | (iii) | the procedures do not include delegation of the Committees responsibilities to management;
| | ----- | -------------------------------------------------------------------------------------------

provided that in order for the pre-approval requirements to be satisfied for any non-audit services that are not pre-approved in accordance
with the procedures set forth above:



| | (iv) | the aggregate amount of all non-audit services that were not pre-approved (if any) must be reasonably expected to constitute no more than 5% of the total amount of fees paid by Penn West and its subsidiary entities to
the auditors during the fiscal year in which the services are provided;
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



B-2



---

| | (v) | Penn West or the subsidiary entity, as the case may be, must not have recognized the services as non-audit services at the time of the engagement; and
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vi) | the services must have been promptly brought to the attention of the Committee and approved, prior to completion of the audit, by the Committee or by one or more of its members to whom authority to grant such approvals
has been delegated by the Committee.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(g) | At least annually, obtain and review the report by the independent auditors describing the independent auditors internal quality control procedures, any material issues raised by the most recent interim
quality-control review, or peer review, of the independent auditors, or by any inquiry or investigation by governmental or professional authorities, within the preceding five years, respecting one or more independent audits carried out by the
independent auditors, and any steps taken to deal with any such issues.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(h) | Review with the independent auditors (and internal auditors, if any) their assessment of the internal controls of the Company, their written reports containing recommendations for improvement, and managements
response and follow-up to any identified weaknesses. The Committee shall also review annually with the independent auditors their plan for their audit and, upon completion of the audit, their reports upon the financial statements of Penn West
and its subsidiaries.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(i) | At least annually, obtain and review a report by the independent auditors describing (i) all critical accounting policies and practices used by Penn West, (ii) all alternative accounting treatments of financial
information within generally accepted accounting principles related to material items that have been discussed with management, including the ramifications of the use of such alternative treatments and disclosures and the treatment preferred by the
accounting firm, and (iii) other material written communications between the accounting firm and management of Penn West.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(j) | Obtain assurance from the independent auditors that disclosure to the Committee is not required pursuant to the provisions of the United States Securities Exchange Act of 1934, as amended, regarding the discovery
by the independent auditors of illegal acts.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(k) | Review, set and approve hiring policies relating to current and former staff of current and former independent auditors.
|--- | ------------------------------------------------------------------------------------------------------------------------



|(l) | Review all public disclosure containing financial information before release (provided that the Committee is not required to review investor presentations that do not contain financial information or earnings guidance
that has not previously been generally disclosed to the public).
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(m) | Review all pending significant litigation to ensure disclosures are sufficient and appropriate.
|--- | -----------------------------------------------------------------------------------------------



|(n) | Satisfy itself that adequate procedures are in place for the review of Penn Wests public disclosure of financial information from Penn Wests financial statements and periodically assess the adequacy of those
procedures.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(o) | Review and discuss major financial risk exposures and the steps management has taken to monitor and control such exposures.
|--- | ---------------------------------------------------------------------------------------------------------------------------



|(p) | Establish procedures independent of management for:
|--- | ---------------------------------------------------



| | (i) | the receipt, retention and treatment of complaints received by Penn West regarding accounting, internal accounting controls, or auditing matters; and
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | the confidential, anonymous submission by employees of Penn West of concerns regarding questionable accounting or auditing matters.
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------



|(q) | Review any other matters required by law, regulation or stock exchange requirement, or that the Committee feels are important to its mandate or that the Board chooses to delegate to it.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(r) | Establish, review and update periodically a Code of Business Conduct and Ethics and a Code of Conduct for Senior Officers and Senior Financial Management and ensure that management has established systems to enforce
these codes.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(s) | Review managements monitoring of Penn Wests compliance with the organizations Code of Business Conduct and Ethics and Code of Conduct for Senior Officers and Senior Financial Management.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(t) | Review and discuss with the Chief Executive Officer, the Chief Financial Officer and the independent auditors, the matters required to be reviewed with those persons in connection with any certificates required by
applicable laws, regulations or stock exchange requirements to be provided by the Chief Executive Officer and the Chief Financial Officer.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



B-3



---

|(u) | Review and discuss major issues regarding accounting principles and financial statement presentations, including any significant changes in Penn Wests selection or application of accounting principles.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(v) | Review and discuss major issues as to the adequacy of Penn Wests internal controls and any special audit steps adopted in light of material control deficiencies.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(w) | Review and discuss analyses prepared by management and/or the independent auditors setting forth significant financial reporting issues and judgments made in connection with the preparation of the financial statements,
including analyses of the effects of alternative generally accepted accounting principles methods on the financial statements.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(x) | Review and discuss the effect of regulatory and accounting initiatives, as well as off-balance sheet structures, on Penn Wests financial statements.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------



|(y) | Review and discuss the type and presentation of information to be included in earnings press releases, paying particular attention to any use of pro forma or adjusted non-GAAP information.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(z) | Annually review the Committees Mandate and the Committee Chairs Terms of Reference and recommend any proposed changes to the Board for consideration.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------



|(aa) | Review and/or approve any other matters specifically delegated to the Committee by the Board.
|---- | ---------------------------------------------------------------------------------------------



|3. | KNOWLEDGE & EDUCATION
|-- | ---------------------

Committee members shall be financially literate
within the meaning of National Instrument 52-110 Audit Committees(NI 52-110), and should have or obtain sufficient knowledge of Penn Wests financial and audit policies and procedures to assist in providing advice and
counsel on related matters. Members shall be encouraged as appropriate to attend relevant educational opportunities at the expense of Penn West.



|4. | COMPOSITION
|-- | -----------



|(a) | Committee members shall be appointed and removed by the Board and the Committee shall be composed of three directors of Penn West or such greater number as the Board may from time to time determine.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(b) | Provided the Board Chair is an independent director as contemplated in subparagraph 4(c) below and financially literate as contemplated in subparagraph (d) below, the Board Chair shall be a
non-voting ex officio member of the Committee, subject to subparagraph 5(e) below.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(c) | Each member of the Committee shall be an independent director in accordance with the definition of independent in (a) NI 52-110 and (b) Section 303A.02 and 303A.07 of the New York Stock Exchange
Listed Company Manual, and in accordance with all other applicable securities laws or rules of any stock exchange on which Penn Wests securities are listed for trading.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(d) | All of the members must be financially literate within the meaning of NI 52-110 and Section 303A.07 (a) of the New York Stock Exchange Listed Company Manual unless the Board has determined to rely on an
exemption in NI 52-110. Being financially literate means members have the ability to read and understand a set of financial statements that present a breadth and level of complexity of accounting issues that are generally comparable
to the breadth and complexity of issues that can reasonably be expected to be raised by Penn Wests financial statements. In addition, at least one member of the Committee must have accounting or related financial management expertise, as
the Board interprets such qualification in its business judgment.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(e) | In connection with the appointment of the members of the Committee, the Board will determine whether any proposed nominee for the Committee serves on the audit committees of more than three public companies. To the
extent that any proposed nominee for membership on the Committee serves on the audit committees of more than three public companies, the Board will make a determination as to whether such simultaneous services would impair the ability of such member
to effectively serve on the Companys Audit Committee and will disclose such determination in Penn Wests annual management proxy circular and annual report on Form 40-F filed with the United States Securities and Exchange Commission.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(f) | The Board shall appoint the Chair of the Committee from among the Committee members.
|--- | ------------------------------------------------------------------------------------



B-4



---

|5. | MEETINGS
|-- | --------



|(a) | The Committee shall meet at least four times per year at the call of the Committee Chair. The Committee Chair may call additional meetings as required. In addition, a meeting may be called by the Board Chair,
the Chief Executive Officer, the Chief Financial Officer or any member of the Committee.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(b) | As part of its job to foster open communication, the Committee should meet at least annually with management, internal auditors (if any) and the independent auditors in separate executive sessions to discuss any matters
that the Committee or each of these groups believe should be discussed privately. In addition, the Committee shall meet with the independent auditors and management quarterly to review Penn Wests interim financials. The Committee
shall also meet with management and independent auditors on an annual basis to review and discuss Penn Wests annual financial statements and the managements discussion and analysis of financial conditions and results of operations.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(c) | Notice of the time and place of every meeting may be given orally, in writing, by facsimile or by other electronic means of communication to each member of the Committee at least 48 hours prior to the time fixed for
such meeting. A member may, in any manner, waive notice of the meeting. Attendance of a member at a meeting shall constitute waiver of notice.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(d) | Agendas, with input from management and the Committee Chair, shall be circulated by the Committee Secretary to Committee members and relevant members of management along with appropriate meeting materials and background
reading on a timely basis prior to Committee meetings.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(e) | A quorum shall be a majority of the members of the Committee present in person or by telephone or video conference or by other electronic or communication medium or by a combination thereof. If an independent ex
officio non-voting members presence is required to attain a quorum, then such member shall be a voting member of the Committee for such meeting.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(f) | The Committee Chair shall be a full voting member of the Committee. If the Committee Chair is unavailable or unable to attend a meeting of the Committee, the Committee Chair shall ask another member to chair the
meeting, failing which a member of the Committee present at the meeting shall be chosen to preside over the meeting by a majority of the members of the Committee present at such meeting. The Chair of any Committee meeting shall have a casting vote
in the event of a tie on any matter upon which the Committee votes during such meeting.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(g) | Members of the Companys management and such other Company staff as are appropriate to provide information to the Committee shall be available to attend meetings upon invitation by the Committee. The Committee
shall have the right to determine who shall and who shall not be present at any time during a meeting of the Committee; however, independent directors, including the Board Chair, shall always have the right to be present. As part of each
Committee meeting the Committee members will also meet in-camera without any members of management present, and in the Committees discretion, without any other members of the Board who are not Committee members present.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(h) | The secretary to the Committee (the Committee Secretary) will be either the Corporate Secretary of Penn West or his/her designate. The Committee Secretary shall record minutes of the meetings of
the Committee, which shall be reviewed and approved by the Committee and maintained with Penn Wests records by the Committee Secretary. The Committee shall report its activities and proceedings to the Board by oral or written report at
the next Board meeting and by distributing the minutes of its meetings. Supporting schedules and information reviewed by the Committee shall be available for examination by any Director.
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|6. | RESOURCES
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|(a) | The Committee may retain special legal, accounting, financial or other consultants or advisors to advise the Committee at the Companys expense and shall have sole authority to retain and terminate any such
consultants or advisors and to approve any such consultants or advisors fees and retention terms, subject to review by the Board, and at the expense of the Company.
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|(b) | The Committee shall have access to Penn Wests senior management and documents as required to fulfill its responsibilities and shall be provided with the resources necessary to carry out its responsibilities.
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|(c) | The Committee shall have the authority to investigate any financial activity of Penn West and to communicate directly with the internal auditors (if any) and independent auditors. All employees are to cooperate as
requested by the Committee.
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|7. | DELEGATION
|-- | ----------

The Committee may delegate from to time to any person or committee of
persons any of the Audit Committees responsibilities that are permitted to be delegated to such person or committee in accordance with applicable laws, regulations and stock exchange requirements.



|8. | STANDARDS OF LIABILITY
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|(a) | Nothing contained in this Mandate is intended to expand applicable standards of liability under statutory, regulatory or other legal requirements for the Board or members of the Committee. The purposes and
responsibilities outlined in this Mandate are meant to serve as guidelines rather than inflexible rules and the Committee may adopt such additional procedures and standards as it deems necessary from time to time to fulfill its responsibilities,
subject to applicable statutory, regulatory and other legal requirements.
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|(b) | The duties and responsibilities of a member of the Committee are in addition to those duties set out for a member of the Board.
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