Exhibit 10.22.5.9





SECOND AMENDED AND RESTATED CREDIT AGREEMENT

AMONG

PRIMEENERGY CORPORATION

THE GUARANTORS PARTY HERETO

COMPASS BANK

(successor in interest to Guaranty Bank, FSB)

AS ADMINISTRATIVE AGENT

AND LETTER OF CREDIT ISSUER

BBVA COMPASS,

AS SOLE LEAD ARRANGER AND

SOLE BOOKRUNNER

BNP PARIBAS,

AS DOCUMENTATION AGENT

AND

THE LENDERS SIGNATORY HERETO

July 30, 2010





REVOLVING LINE OF CREDIT AND
LETTER OF CREDIT FACILITY

OF UP TO $250,000,000







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TABLE OF CONTENTS



|                                          |  |      |  |                                                        |  |   
|----------------------------------------- |  | ---- |  | ------------------------------------------------------ |  | --
|ARTICLE I DEFINITIONS AND INTERPRETATION  |  | 2   
|                                          |  | 1.1  |  | Terms Defined Above                                    |  | 2 
|                                          |  | 1.2  |  | Additional Defined Terms                               |  | 2 
|                                          |  | 1.3  |  | Undefined Financial Accounting Terms                   |  | 21
|                                          |  | 1.4  |  | References                                             |  | 21
|                                          |  | 1.5  |  | Articles and Sections                                  |  | 22
|                                          |  | 1.6  |  | Number and Gender                                      |  | 22
|                                          |  | 1.7  |  | Incorporation of Schedules and Exhibits                |  | 22
|                                          |  | 1.8  |  | Negotiated Transaction                                 |  | 22
|                                          | 
|ARTICLE II TERMS OF FACILITY              |  | 22  
|                                          |  | 2.1  |  | Revolving Line of Credit and Letter of Credit Facility |  | 22
|                                          |  | 2.2  |  | Limitations on Interest Periods                        |  | 26
|                                          |  | 2.3  |  | Limitation on Types of Loans                           |  | 26
|                                          |  | 2.4  |  | Use of Loan Proceeds and Letters of Credit             |  | 26
|                                          |  | 2.5  |  | Interest                                               |  | 27
|                                          |  | 2.6  |  | Repayment of Loans and Interest                        |  | 27
|                                          |  | 2.7  |  | Outstanding Amounts                                    |  | 28
|                                          |  | 2.8  |  | Taxes and Time, Place, and Method of Payments          |  | 28
|                                          |  | 2.9  |  | Pro Rata Treatment; Adjustments                        |  | 31
|                                          |  | 2.10 |  | Borrowing Base and Monthly Reduction Amount            |  | 32
|                                          |  | 2.11 |  | Mandatory Prepayments                                  |  | 33
|                                          |  | 2.12 |  | Voluntary Prepayments and Conversions of Loans         |  | 34
|                                          |  | 2.13 |  | Commitment Fees                                        |  | 34
|                                          |  | 2.14 |  | Letter of Credit Fronting Fees                         |  | 34
|                                          |  | 2.15 |  | Additional Fees                                        |  | 34
|                                          |  | 2.16 |  | Loans to Satisfy Obligations                           |  | 34
|                                          |  | 2.17 |  | General Provisions Relating to Interest                |  | 35
|                                          |  | 2.18 |  | Yield Protection                                       |  | 36
|                                          |  | 2.19 |  | Illegality                                             |  | 38
|                                          |  | 2.20 |  | Replacement Lenders                                    |  | 38
|                                          |  | 2.21 |  | Regulatory Change                                      |  | 39
|                                          |  | 2.22 |  | Letters in Lieu of Transfer Orders or Division Orders  |  | 39
|                                          |  | 2.23 |  | Power of Attorney                                      |  | 39
|                                          |  | 2.24 |  | Security Interest in Accounts; Right of Offset         |  | 40
|                                          |  | 2.25 |  | Defaulting Lenders                                     |  | 40
|                                          | 
|ARTICLE III CONDITIONS                    |  | 42  
|                                          |  | 3.1  |  | Receipt of Loan Documents and Other Items              |  | 42
|                                          |  | 3.2  |  | Each Loan                                              |  | 45
|                                          |  | 3.3  |  | Issuance of Letters of Credit                          |  | 46
|                                          | 
|ARTICLE IV REPRESENTATIONS AND WARRANTIES |  | 47  
|                                          |  | 4.1  |  | Due Authorization                                      |  | 47
|                                          |  | 4.2  |  | Existence                                              |  | 47



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|                                |  |      |  |                                                             |  |   
|------------------------------- |  | ---- |  | ----------------------------------------------------------- |  | --
|                                |  | 4.3  |  | Valid and Binding Obligations                               |  | 48
|                                |  | 4.4  |  | Security Documents                                          |  | 48
|                                |  | 4.5  |  | Title to Oil and Gas Properties                             |  | 48
|                                |  | 4.6  |  | Scope and Accuracy of Financial Statements                  |  | 48
|                                |  | 4.7  |  | No Material Misstatements                                   |  | 48
|                                |  | 4.8  |  | Liabilities and Litigation                                  |  | 48
|                                |  | 4.9  |  | Authorizations; Consents                                    |  | 49
|                                |  | 4.10 |  | Compliance with Laws                                        |  | 49
|                                |  | 4.11 |  | ERISA                                                       |  | 49
|                                |  | 4.12 |  | Environmental Laws                                          |  | 49
|                                |  | 4.13 |  | Compliance with Federal Reserve Regulations                 |  | 49
|                                |  | 4.14 |  | Investment Company Act Compliance                           |  | 50
|                                |  | 4.15 |  | Proper Filing of Tax Returns; Payment of Taxes Due          |  | 50
|                                |  | 4.16 |  | Refunds                                                     |  | 50
|                                |  | 4.17 |  | Gas Contracts                                               |  | 50
|                                |  | 4.18 |  | Intellectual Property                                       |  | 50
|                                |  | 4.19 |  | Casualties or Taking of Property                            |  | 50
|                                |  | 4.20 |  | Principal Location                                          |  | 51
|                                |  | 4.21 |  | Subsidiaries, Partnerships and Certain Investments          |  | 51
|                                |  | 4.22 |  | Compliance with Anti-Terrorism Laws                         |  | 51
|                                |  | 4.23 |  | Identification Numbers                                      |  | 52
|                                |  | 4.24 |  | Solvency                                                    |  | 52
|                                | 
|ARTICLE V AFFIRMATIVE COVENANTS |  | 52  
|                                |  | 5.1  |  | Maintenance and Access to Records                           |  | 52
|                                |  | 5.2  |  | Quarterly Financial Statements and Compliance Certificates  |  | 53
|                                |  | 5.3  |  | Annual Financial Statements and Compliance Certificate      |  | 53
|                                |  | 5.4  |  | Oil and Gas Reserve Reports and Production Reports          |  | 54
|                                |  | 5.5  |  | Title Opinions; Title Defects; Collateral                   |  | 55
|                                |  | 5.6  |  | Notices of Certain Events                                   |  | 55
|                                |  | 5.7  |  | Letters in Lieu of Transfer Orders or Division Orders       |  | 56
|                                |  | 5.8  |  | Hedging Reports                                             |  | 56
|                                |  | 5.9  |  | Additional Guaranties and Security Documents                |  | 56
|                                |  | 5.10 |  | Additional Information                                      |  | 56
|                                |  | 5.11 |  | Compliance with Laws                                        |  | 57
|                                |  | 5.12 |  | Payment of Assessments and Charges                          |  | 57
|                                |  | 5.13 |  | Maintenance of Existence or Qualification and Good Standing |  | 57
|                                |  | 5.14 |  | Payment of Notes; Performance of Obligations                |  | 57
|                                |  | 5.15 |  | Further Assurances                                          |  | 57
|                                |  | 5.16 |  | Initial Expenses of Agent                                   |  | 57
|                                |  | 5.17 |  | Subsequent Expenses of Agent and Lenders                    |  | 58
|                                |  | 5.18 |  | Operation of Oil and Gas Properties                         |  | 58
|                                |  | 5.19 |  | Maintenance and Inspection of Properties                    |  | 58
|                                |  | 5.20 |  | Maintenance of Insurance                                    |  | 58
|                                |  | 5.21 |  | Environmental Indemnification                               |  | 59
|                                |  | 5.22 |  | General Indemnification                                     |  | 60
|                                |  | 5.23 |  | Evidence of Compliance with Anti-Terrorism Laws             |  | 60



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|                              |  |      |  |                                                        |  |   
|----------------------------- |  | ---- |  | ------------------------------------------------------ |  | --
|ARTICLE VI NEGATIVE COVENANTS |  | 60  
|                              |  | 6.1  |  | Indebtedness                                           |  | 60
|                              |  | 6.2  |  | Contingent Obligations                                 |  | 61
|                              |  | 6.3  |  | Liens; Restrictive Agreements                          |  | 62
|                              |  | 6.4  |  | Sales of Assets                                        |  | 62
|                              |  | 6.5  |  | Leasebacks                                             |  | 62
|                              |  | 6.6  |  | Sale or Discount of Receivables                        |  | 62
|                              |  | 6.7  |  | Loans or Advances                                      |  | 62
|                              |  | 6.8  |  | Investments                                            |  | 63
|                              |  | 6.9  |  | Restricted Payments                                    |  | 63
|                              |  | 6.10 |  | Issuance of Equity; Changes in Corporate Structure     |  | 64
|                              |  | 6.11 |  | Transactions with Affiliates                           |  | 64
|                              |  | 6.12 |  | Lines of Business                                      |  | 64
|                              |  | 6.13 |  | Plan Obligation                                        |  | 64
|                              |  | 6.14 |  | Current Ratio                                          |  | 64
|                              |  | 6.15 |  | Total Indebtedness to EBITDAX Ratio                    |  | 64
|                              |  | 6.16 |  | Interest Coverage Ratio                                |  | 65
|                              |  | 6.17 |  | Anti-Terrorism Laws                                    |  | 65
|                              |  | 6.18 |  | Commodity Hedge Agreements                             |  | 65
|                              |  | 6.19 |  | Use of Proceeds and Letters of Credit                  |  | 65
|                              |  | 6.20 |  | Certain Gas Contracts                                  |  | 65
|                              | 
|ARTICLE VII EVENTS OF DEFAULT |  | 65  
|                              |  | 7.1  |  | Enumeration of Events of Default                       |  | 65
|                              |  | 7.2  |  | Remedies                                               |  | 67
|                              | 
|ARTICLE VIII THE AGENT        |  | 69  
|                              |  | 8.1  |  | Appointment                                            |  | 69
|                              |  | 8.2  |  | Delegation of Duties                                   |  | 69
|                              |  | 8.3  |  | Exculpatory Provisions                                 |  | 69
|                              |  | 8.4  |  | Reliance by Agent                                      |  | 69
|                              |  | 8.5  |  | Notice of Default                                      |  | 70
|                              |  | 8.6  |  | Non-Reliance on Agent and Other Lenders                |  | 70
|                              |  | 8.7  |  | Indemnification                                        |  | 71
|                              |  | 8.8  |  | Restitution                                            |  | 71
|                              |  | 8.9  |  | Agent in Its Individual Capacity                       |  | 72
|                              |  | 8.10 |  | Successor Agent                                        |  | 72
|                              |  | 8.11 |  | Applicable Parties                                     |  | 72
|                              |  | 8.12 |  | Releases                                               |  | 73
|                              | 
|ARTICLE IX MISCELLANEOUS      |  | 73  
|                              |  | 9.1  |  | Assignments; Participations                            |  | 73
|                              |  | 9.2  |  | Survival of Representations, Warranties, and Covenants |  | 74
|                              |  | 9.3  |  | Notices and Other Communications                       |  | 75
|                              |  | 9.4  |  | Parties in Interest                                    |  | 75
|                              |  | 9.5  |  | Renewals; Extensions                                   |  | 75
|                              |  | 9.6  |  | Rights of Third Parties                                |  | 75



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| |  |      |  |                                                             |  |   
| |  | ---- |  | ----------------------------------------------------------- |  | --
| |  | 9.7  |  | No Waiver; Rights Cumulative                                |  | 75
| |  | 9.8  |  | Survival Upon Unenforceability                              |  | 76
| |  | 9.9  |  | Amendments; Waivers                                         |  | 76
| |  | 9.10 |  | Controlling Agreement                                       |  | 76
| |  | 9.11 |  | Disposition of Collateral                                   |  | 76
| |  | 9.12 |  | Governing Law                                               |  | 77
| |  | 9.13 |  | Waiver of Right to Jury Trial                               |  | 77
| |  | 9.14 |  | Waiver of Class Action                                      |  | 77
| |  | 9.15 |  | Jurisdiction and Venue                                      |  | 77
| |  | 9.16 |  | Integration                                                 |  | 77
| |  | 9.17 |  | Waiver of Punitive and Consequential Damages                |  | 78
| |  | 9.18 |  | Counterparts                                                |  | 78
| |  | 9.19 |  | USA Patriot Act Notice                                      |  | 78
| |  | 9.20 |  | Tax Shelter Regulations                                     |  | 78
| |  | 9.21 |  | Contribution and Indemnification                            |  | 78
| |  | 9.22 |  | Confidentiality                                             |  | 79
| |  | 9.23 |  | Automatic Debits of Fees                                    |  | 80
| |  | 9.24 |  | Electronic Communications                                   |  | 80
| |  | 9.25 |  | Effectiveness of Facsimile and PDF Documents and Signatures |  | 80

LIST OF SCHEDULES



|              |  |   |  |                                                   
|------------- |  | - |  | --------------------------------------------------
|Schedule 1.2  |  | - |  | Certain Permitted Liens                           
|Schedule 4.8  |  | - |  | Liabilities and Litigation                        
|Schedule 4.12 |  | - |  | Environmental Matters                             
|Schedule 4.16 |  | - |  | Refunds                                           
|Schedule 4.17 |  | - |  | Gas Contracts                                     
|Schedule 4.19 |  | - |  | Casualties                                        
|Schedule 4.21 |  | - |  | Subsidiaries, Partnerships and Certain Investments
|Schedule 4.23 |  | - |  | Taxpayer Identification and Organization Numbers  

LIST
OF EXHIBITS



|            |  |   |  |                                    
|----------- |  | - |  | -----------------------------------
|Exhibit I   |  | - |  | Form of Note                       
|Exhibit I-A |  | - |  | Form of Additional Compass Note    
|Exhibit II  |  | - |  | Form of Borrowing Request          
|Exhibit III |  | - |  | Form of Compliance Certificate     
|Exhibit IV  |  | - |  | Facility Amounts                   
|Exhibit V   |  | - |  | Form of Assignment Agreement       
|Exhibit VI  |  | - |  | Form of Security Agreement (Pledge)
|Exhibit VII |  | - |  | Form of Guaranty                   



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SECOND AMENDED AND RESTATED CREDIT AGREEMENT

This SECOND AMENDED AND RESTATED CREDIT AGREEMENT is made and entered into effective the 30th day of July, 2010, by and among PRIMEENERGY
CORPORATION, a Delaware corporation (the Borrower), PRIMEENERGY MANAGEMENT CORPORATION, a New York corporation (PrimeEnergy Management), PRIME OPERATING COMPANY, a Texas corporation (Prime
Operating), EASTERN OIL WELL SERVICE COMPANY, a West Virginia corporation (Eastern Oil Well Service), SOUTHWEST OILFIELD CONSTRUCTION COMPANY, an Oklahoma corporation (Southwest Oilfield Construction),
E O W S MIDLAND COMPANY, a Texas corporation (E O W S Midland), each lender that is a party hereto or becomes a party hereto as provided in Section 9.1 (individually, together with its
successors and assigns, a Lender and collectively, together with their respective successors and assigns, the Lenders), and COMPASS BANK, an Alabama national banking association (BBVA Compass)
and the successor in interest to Guaranty Bank, FSB, as administrative agent for the Lenders, the issuing bank for letters of credit issued hereunder and as collateral agent for the Lenders and any other Lender Hedge Counterparties (as defined
hereinafter) under certain circumstances hereunder (in such capacities, together with its successors in such capacities pursuant to the terms hereof, the Agent).

W I T N E S S E T H:

WHEREAS, the Borrower and each of the Initial Guarantors (as defined in Section 1.2) are affiliated entities; and

WHEREAS, the directors of each of the Initial Guarantors have determined that the relevant Initial Guarantor will receive substantial
direct and/or indirect benefits from extensions of credit to the Borrower hereunder;

WHEREAS, the Borrower, the Initial
Guarantors, the Agent and the Lenders party hereto as of the Closing Date (as defined hereinafter) are parties to that certain Amended and Restated Credit Agreement dated December 28, 2006, as amended by that certain First Amendment to Amended
and Restated Credit Agreement dated July 17, 2007, that certain Second Amendment to Amended and Restated Credit Agreement dated October 9, 2007, that certain Third Amendment to Amended and Restated Credit Agreement dated January 22,
2008, that certain Fourth Amendment to Amended and Restated Credit Agreement dated February 8, 2008, that certain Fifth Amendment to Amended and Restated Credit Agreement dated October 30, 2008, that certain Sixth Amendment to Amended and
Restated Credit Agreement dated June 19, 2009 and that certain Seventh Amendment to Amended and Restated Credit Agreement dated March 1, 2010 (as so amended, the Existing Credit Agreement); and

WHEREAS, the Borrower, the Initial Guarantors, the Agent and the Lenders party to the Existing Credit Agreement desire to amend and
restate in its entirety the Existing Credit Agreement by entering into this Second Amended and Restated Credit Agreement;



- 1 -



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NOW, THEREFORE, in consideration of the premises and the mutual covenants and agreements
herein contained, the parties hereto hereby agree as follows, restating in its entirety the Existing Credit Agreement:

ARTICLE
I

DEFINITIONS AND INTERPRETATION

1.1 Terms Defined Above. As used in this Second Amended and Restated Credit Agreement, each of the terms Agent,
BBVA Compass, Borrower, Eastern Oil Well Service, E O W S Midland, Existing Credit Agreement, Lender,
Lenders, PrimeEnergy Management, Prime Operating and Southwest Oilfield Construction shall have the meaning assigned to such term hereinabove.

1.2 Additional Defined Terms. As used in this Credit Agreement, each of the following terms shall have the meaning assigned
thereto in this Section 1.2 or in Sections referred to in this Section 1.2, unless the context otherwise requires:

Additional Amount shall have the meaning assigned to such term in Section 2.8.

Additional Compass Note shall mean the promissory note of the Borrower payable to BBVA Compass in the
form attached hereto as Exhibit I-A with all blanks completed appropriately.

Additional
Costs shall mean costs which are attributable to the obligation of the Agent or any Lender to make or its making or maintaining any Loan, or any reduction in any amount receivable by the Agent or such Lender in respect of any such
obligation or any LIBO Rate Loan, resulting from any Regulatory Change which (a) changes the basis of taxation of any amounts payable to the Agent or such Lender under this Agreement or any Note in respect of any LIBO Rate Loan (other than
taxes imposed on the overall net income of the Agent or such Lender or its Applicable Lending Office (including franchise or similar taxes) for any such LIBO Rate Loan), (b) imposes or modifies any reserve, special deposit, minimum capital,
capital ratio, or similar requirements (other than the Reserve Requirement utilized in the determination of the Adjusted LIBO Rate for such Loan) relating to any extensions of credit or other assets of, or any deposits with or other liabilities of,
the Agent or such Lender (including LIBO Rate Loans and Dollar deposits in the London interbank market in connection with LIBO Rate Loans), or the Commitment of the Agent or such Lender, or the London interbank market, or (c) imposes any other
condition affecting this Agreement or any Note or any of such extensions of credit, liabilities, or Commitments.

Adjusted Base Rate shall mean, for any Base Rate Loan, an interest rate per annum (rounded upwards, if
necessary, to the nearest 1/100 of 1%) determined by the Agent to be the greater of (a) the Base Rate, (b) the sum of the Federal Funds Rate plus one half of one percent (0.50%), (c) the Adjusted LIBO Rate for an Interest Period of
one month plus one percent (1.00%) and (d) three percent (3.00%).



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Adjusted LIBO Rate shall mean, for any Interest Period
for any LIBO Rate Loan, the greater of (a) an interest rate per annum (rounded upwards, if necessary, to the nearest 1/100 of 1%) determined by the Agent to be equal to the quotient of (i) the LIBO Rate for such Interest Period for such
Loan divided by (ii) the remainder of 1.00 minus the Reserve Requirement for such Loan for such Interest Period or (b) two percent (2.00%) per annum.

Affiliate shall mean, as to any Person, any other Person directly or indirectly, controlling, or under
common control with, such Person, and includes any affiliate of such Person within the meaning of Rule 12b2 promulgated by the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, with control,
as used in this definition, meaning possession, directly or indirectly, of the power to direct or cause the direction of management, policies or action through ownership of voting securities, contract, voting trust, or membership in management or in
the group appointing or electing management or otherwise through formal or informal arrangements or business relationships.

Agreement shall mean this Second Amended and Restated Credit Agreement, as it may be amended,
supplemented, restated or otherwise modified from time to time.

Anti-Terrorism Laws shall
mean any laws relating to terrorism or money laundering, including Executive Order No. 13224 and the USA Patriot Act.

Applicable Lending Office shall mean, for each Lender and type of Loan, the lending office of such
Lender (or an affiliate of such Lender) designated for such type of Loan on the signature pages hereof or in an Assignment Agreement or such other office of such Lender (or an affiliate of such Lender) as such Lender may from time to time specify to
the Agent and the Borrower as the office by which its Loans of such type are to be made and maintained.



- 3 -



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Applicable Margin shall mean (a) on any day and as
to each LIBO Rate Loan or Base Rate Loan under the Facility, as the case may be, outstanding on such day the amount determined by reference to the following table:



|                           |                 |                   |   |                 |      |  
|-------------------------- | --------------- | ----------------- | - | --------------- | ---- | -
|Borrowing Base Utilization |                 | Applicable Margin |  
|                           | LIBO Rate Loans |                   |   | Base Rate Loans |     
|>90%                       |                 | 3.25              | % |                 | 2.25 | %
|>75% but <90%              |                 | 3.00              | % |                 | 2.00 | %
|>50% but <75%              |                 | 2.75              | % |                 | 1.75 | %
|>25% but <50%              |                 | 2.50              | % |                 | 1.50 | %
|<25%                       |                 | 2.25              | % |                 | 1.25 | %

provided,
however, during any period while there exists any Deficiency, the relevant amount above shall be increased by two percent (2.00%) and, during any period while delivery of a required Reserve Report is delinquent, the Applicable Margin shall be
that shown in the table above when the Borrowing Base Utilization is equal to or greater than ninety percent (90%).

Approved Fund shall mean any (a) investment company, fund, trust, securitization vehicle or
conduit that is (or will be) engaged in making, purchasing, holding or otherwise investing in commercial loans and similar extensions of credit in the ordinary course of its business or (b) any Person (other than a natural person) which
temporarily warehouses loans for any Lender or any entity described in the preceding clause (a) and that, with respect to each of the preceding clauses (a) and (b), is administered or managed by (i) a Lender, (ii) an Affiliate of
a Lender or (iii) a Person (other than a natural person) or an Affiliate of a Person (other than a natural person) that administers or manages a Lender.

Approved Hedge Counterparty shall mean (a) any Lender or any Affiliate of a Lender and
(b) any other Person whose long term senior unsecured debt rating is A- by Standard & Poors Corporation and A3 by Moodys Investor Service, Inc. (or their equivalent) or higher at the time a Commodity Hedge Agreement or an
Interest Rate Hedge Agreement is entered into.

Artic shall mean Artic Management
Corporation, a corporation incorporated under the laws of Panama.

Artic Loan shall mean the
loan in the amount of up to $50,000,000 made by Artic to Prime Offshore L.L.C. and evidenced by that certain Subordinated Promissory Note dated March 31, 2008 in the face principal amount of up to $50,000,000 executed by Prime Offshore L.L.C.
and payable to the order of Artic.



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Assignment Agreement shall mean each Assignment
Agreement, substantially in the form of Exhibit VIII, with appropriate insertions.

Available
Commitment shall mean, at any time, an amount equal to the remainder, if any, of (a) the Commitment Amount in effect at such time minus (b) the sum of the Loan Balance at such time plus the L/C Exposure at such time.

Base Rate shall mean the interest rate announced by BBVA Compass from time to time as its
prime rate or its general reference rate of interest, which Base Rate shall change upon any change in such announced or published general reference interest rate and which Base Rate may not be the lowest interest rate charged by BBVA Compass.

Base Rate Loan shall mean any Loan and any portion of the Loan Balance which the Borrower
has requested, in the initial Borrowing Request for such Loan or a subsequent Borrowing Request for such portion of the Loan Balance, bear interest on the basis of the Adjusted Base Rate, or which pursuant to the terms hereof is otherwise required
to bear interest on the basis of the Adjusted Base Rate.

Benefited Lender shall have the
meaning assigned to such term in Section 2.9(c).

Blocked Person shall have the meaning
assigned to such term in Section 4.22.

Borrowing Base shall mean, at any time,
the amount stated in Section 2.10(a) and each other amount established and in effect from time to time in accordance with the provisions of Section 2.10.

Borrowing Base Utilization shall mean (a) the sum of (i) the Loan Balance plus (ii) the
L/C Exposure divided by (b) the Borrowing Base then in effect.

Borrowing Request shall
mean each written request, substantially in the form attached hereto as Exhibit II, by the Borrower to the Agent for a borrowing or conversion pursuant to Section 2.1 or Section 2.12, each of which shall:

(a) be signed by a Responsible Officer of the Borrower;

(b) specify the amount and type of the Loan requested or to be converted and the date of the borrowing or conversion
(which shall be a Business Day);

(c) when requesting a Base Rate Loan, be delivered to the Agent no later than
11:00 a.m., Central Standard or Central Daylight Savings Time, as the case may be, on the Business Day preceding the requested borrowing or conversion; and



- 5 -



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(d) when requesting a LIBO Rate Loan, be delivered to the Agent no later
than 11:00 a.m., Central Standard or Central Daylight Savings Time, as the case may be, the third Business Day preceding the requested borrowing or conversion and designate the Interest Period requested with respect to such Loan.

Business Day shall mean a day other than a Saturday, Sunday, legal holiday for commercial banks under
the laws of the State of Texas, or any other day when banking is suspended in the State of Texas and, with respect to all requests, notices, and determinations in connection with, and payments of principal and interest on, LIBO Rate Loans, which is
also a day for trading by and between banks in Dollar deposits in the London interbank market.

Business Entity shall mean a corporation, partnership, joint venture, limited liability company, joint
stock association, business trust, or other business entity.

Change in Control means
(a) the acquisition of ownership, directly or indirectly, beneficially or of record, by any Person or group (within the meaning of the Securities Exchange Act of 1934 and the rules of the SEC thereunder as in effect on the date hereof) of
equity interests representing more than fifty one percent (51%) of the aggregate ordinary voting power represented by the issued and outstanding equity interests of the Borrower or (b) occupation of a majority of the seats (other than
vacant seats) on the board of directors of the Borrower by Persons who were neither (i) nominated by the board of directors of the Borrower nor (ii) appointed by directors so nominated.

Closing shall mean the establishment of the Facility.

Closing Date shall mean the date of this Agreement.

Collateral shall mean the Mortgaged Properties and any other Property now or at any time used or
intended as security for the payment or performance of all or any portion of the Obligations, including interests of the Borrower in limited partnerships and any other Property that was considered in determining or redetermining the Borrowing Base
and expressly including as extracted collateral as defined in the UCC or the Uniform Commercial Code of any other applicable state.

Commitment Amount shall mean, subject to the applicable provisions of this Agreement and the right of
the Borrower to reduce such amount on an irrevocable basis by written notice to the Agent at any time (provided, however, the Borrower shall not be entitled to any reduction to an amount less than the sum of the then existing Loan
Balance and L/C Exposure), the lesser of (a) the sum of the Facility Amounts of the Lenders or (b) the Borrowing Base in effect at such time.

Commitment Fees shall mean the fees payable to the Agent by the Borrower pursuant to the provisions of
Section 2.13.



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Commitment Period shall mean the period from and
including the Closing Date to, but not including, the Commitment Termination Date.

Commitments shall mean the several obligations of the Lenders to make Loans to or for the benefit of
the Borrower and the obligation of the Agent to issue and the Lenders to participate in Letters of Credit, all pursuant to Section 2.1.

Commitment Termination Date shall mean the earlier of (a) July 30, 2014 and (b) the date
the Commitments are terminated pursuant to the provisions of Section 7.2.

Commodity Hedge
Agreements shall mean crude oil, natural gas or other hydrocarbon floor, collar, cap, price protection or hedge agreements.

Commonly Controlled Entity shall mean any Person which is under common control with the Borrower or any
of the Guarantors within the meaning of Section 4001 of ERISA.

Compliance Certificate
shall mean each certificate, substantially in the form attached hereto as Exhibit III, executed by a Responsible Officer of the Borrower and furnished to the Agent from time to time in accordance with the provisions of Section 5.2
or Section 5.3, as the case may be.

Contingent Obligation shall mean, as to any
Person, any obligation of such Person guaranteeing or in effect guaranteeing any Indebtedness, leases, dividends, or other obligations of any other Person (for purposes of this definition, a primary obligation) in any manner,
whether directly or indirectly, including any obligation of such Person, regardless of whether such obligation is contingent, (a) to purchase any primary obligation or any Property constituting direct or indirect security therefor, (b) to
advance or supply funds (i) for the purchase or payment of any primary obligation, or (ii) to maintain working or equity capital of any other Person in respect of any primary obligation, or otherwise to maintain the net worth or solvency
of any other Person, (c) to purchase Property, securities or services primarily for the purpose of assuring the owner of any primary obligation of the ability of the Person primarily liable for such primary obligation to make payment thereof,
or (d) otherwise to assure or hold harmless the owner of any such primary obligation against loss in respect thereof, with the amount of any Contingent Obligation being deemed to be equal to the stated or determinable amount of the primary
obligation in respect of which such Contingent Obligation is made or, if not stated or determinable, the maximum reasonably anticipated liability in respect thereof as determined by such Person in good faith.

Contribution Percentage shall mean, for each party obligated to make a payment due pursuant to the
provisions of Section 9.20, the percentage obtained by dividing such partys Obtained Benefit by the aggregate Obtained Benefits of all of the Guarantors.



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Current Assets shall mean all assets which would, in
accordance with GAAP, be included as current assets on a consolidated balance sheet of the Borrower and its consolidated Subsidiaries as of the date of calculation, after deducting adequate reserves in each case in which a reserve is proper in
accordance with GAAP, plus the then current Available Commitment, but excluding non-cash derivative current assets arising from Commodity Hedge Agreements.

Current Liabilities shall mean all liabilities which would, in accordance with GAAP, be included as
current liabilities on a consolidated balance sheet of the Borrower and its consolidated Subsidiaries, but excluding current maturities in respect of the Obligations, both principal and interest, and non-cash derivative current liabilities arising
from Commodity Hedge Agreements and current maturities of the Indebtedness of the Parent listed on Schedule 6.1.

Default shall mean any event or occurrence which with the lapse of time or the giving of notice or both
would become an Event of Default.

Defaulting Lender shall mean any Lender, as reasonably
determined by the Agent, that has (a) failed to fund any portion of its Loans or participations in Letters of Credit within three Business Days of the date required to be funded by it hereunder, (b) notified the Borrower, the Agent or any
Lender in writing that it does not intend to comply with any of its funding obligations under this Agreement or has made a public statement to the effect that it does not intend to comply with its funding obligations under this Agreement,
(c) failed, within five Business Days after request by the Agent, to confirm that it will comply with the terms of this Agreement relating to its obligations to fund prospective Loans and participations in then outstanding Letters of Credit,
(d) otherwise failed to pay over to the Agent or any other Lender any other amount required to be paid by it hereunder within three Business Days of the date when due, unless the subject of a good faith dispute or (e) (i) become or is
insolvent or has a parent company that has become or is insolvent or (ii) become the subject of an Insolvency Proceeding, or has had a receiver, conservator, trustee or custodian appointed for it, acquiescence in any such Insolvency Proceeding
or appointment or has a parent company that has become the subject of an Insolvency Proceeding, or has had a receiver, conservator, trustee or custodian appointed for it; provided that a Lender shall not become a Defaulting Lender solely as the
result of the acquisition or maintenance of an ownership interest in such Lender or Person controlling such Lender or the exercise of control over a Lender or Person controlling such Lender by a Governmental Authority or an instrumentality thereof.

Default Rate shall mean a daily interest rate equal to the per annum interest rate equal to
the Adjusted Base Rate for each relevant day plus two percent (2%) converted to a daily rate on the basis of a year of 365 or 366 days, as



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the case may be, and the rate so determined for each relevant day being applied on the basis of actual days elapsed (including the first day, but excluding the last day) during the period for
which interest is payable at the Default Rate, but in no event shall the Default Rate exceed the Highest Lawful Rate.

Deficiency shall have the meaning assigned to such term in Section 2.11(a).

Dollars and $ shall mean dollars in lawful currency of the United States of America.

Domestic Subsidiary shall mean any Subsidiary of the Borrower that is organized under the
laws of the United States of America or any state thereof or the District of Columbia.

EBITDAX shall mean, for any reporting period, Net Income for such period; plus, without duplication and
to the extent deducted in the calculation of Net Income for such period, the sum of (a) income or franchise Taxes paid or accrued; (b) Interest Expense; (c) amortization, depletion and depreciation expense, and any non-cash, ceiling
test writedowns; (d) exploration expenses and other similar non-cash charges and expenses, (e) any non-cash losses, charges or gains under Interest Rate Hedge Agreements or Commodity Hedge Agreements resulting from the requirements of FASB
Statement 133 or with respect to retirement obligations resulting from the requirements of FASB Statement 143 for that period (provided that, for the avoidance of doubt, any losses or charges in respect of the termination of any Interest Rate
Hedge Agreements or Commodity Hedge Agreements shall not be added to Net Income and gains will not be subtracted); (f) losses from sales or other dispositions of assets (other than hydrocarbons produced in the ordinary course of business) and
other extraordinary or non-recurring losses; and (g) other non-cash charges (excluding accruals for cash expenses made in the ordinary course of business); minus, to the extent included in the calculation of Net Income for such period, the sum
of (i) any non-cash gains on any Interest Rate Hedge Agreements or Commodity Hedge Agreements resulting from the requirements of FASB Statement 133 or with respect to retirement obligations resulting from the requirements of FASB Statement 143
for such period; (ii) extraordinary or non-recurring gains attributable to such period; and (iii) gains from sales or other dispositions of assets (other than hydrocarbons produced in the ordinary course of business) attributable to such
period.

Environmental Complaint shall mean any written or oral complaint, order, directive,
claim, citation, notice of environmental report or investigation, or other notice by any Governmental Authority or any other Person with respect to (a) air emissions, (b) spills, releases, or discharges to soils, any improvements located
thereon, surface water, groundwater, or the sewer, septic, waste treatment, storage, or disposal systems servicing any Property of the Borrower or any of the Guarantors, (c) solid or liquid waste disposal, (d) the use, generation, storage,
transportation, or disposal of any Hazardous Substance, or (e) other environmental, health or safety matters affecting any Property of the Borrower or any of the Guarantors or the business conducted thereon.



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Environmental Laws shall mean (a) the following
federal laws as they may be cited, referenced, and amended from time to time: the Clean Air Act, the Clean Water Act, the Safe Drinking Water Act, the Comprehensive Environmental Response, Compensation and Liability Act, the Endangered Species Act,
the Resource Conservation and Recovery Act, the Hazardous Materials Transportation Act, the Occupational Safety and Health Act, the Oil Pollution Act, the Resource Conservation and Recovery Act, the Superfund Amendments and Reauthorization Act, and
the Toxic Substances Control Act; (b) any and all equivalent environmental statutes of any state in which Property of the Borrower or any of the Guarantors is situated, as they may be cited, referenced and amended from time to time;
(c) any rules or regulations promulgated under or adopted pursuant to the above federal and state laws; and (d) any other equivalent federal, state, or local statute or any requirement, rule, regulation, code, ordinance, or order adopted
pursuant thereto, including those relating to the generation, transportation, treatment, storage, recycling, disposal, handling, or release of Hazardous Substances.

ERISA shall mean the Employee Retirement Income Security Act of 1974, and the regulations thereunder
and interpretations thereof.

Event of Default shall mean any of the events specified in
Section 7.1.

Excess Payments shall have the meaning assigned to such term in
Section 9.21.

Excluded Taxes shall mean, with respect to any and all payments
to the Agent, any Lender or any other recipient of any payment to be made by or on account of any Obligation, net income taxes, branch profits taxes, franchise and excise taxes (to the extent imposed in lieu of net income taxes), and all interest,
penalties and liabilities with respect thereto, imposed on the Agent or any Lender.

Executive Order
No. 13224 shall mean Executive Order No. 13224 on Terrorist Financing, effective September 24, 2001, as the same has been, or shall hereafter be, renewed, extended, amended or replaced.

Facility shall mean the credit facility extended to the Borrower pursuant to this Agreement.

Facility Amount shall mean, for each Lender and at any point in time, the amount set forth
opposite the name of such Lender on Exhibit IV under the caption Facility Amounts, as modified from time to time to reflect assignments permitted by Section 9.1 or otherwise pursuant to the terms hereof.



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Federal Funds Rate shall mean, for any day, the rate per
annum (rounded upwards, if necessary, to the nearest 1/100 of 1%) equal to the weighted average of the rates on overnight federal funds transactions with members of the Federal Reserve System arranged by federal funds brokers on such day, as
published by the Federal Reserve Bank of Dallas, Texas, on the Business Day next succeeding such day, provided that (a) if the day for which such rate is to be determined is not a Business Day, the Federal Funds Rate for such day shall be such
rate on such transactions on the next preceding Business Day as so published on the next succeeding Business Day, and (b) if such rate is not so published for any day, the Federal Funds Rate for such day shall be the average rate charged to
BBVA Compass on such day on such transactions as determined by the Agent.

Fee Letter shall
mean that certain letter agreement dated May 17, 2010 between BBVA Compass and the Borrower relating to certain fees to be paid by the Borrower to BBVA Compass in connection with the Facility.

Financial Statements shall mean consolidated financial statements of the Borrower and its consolidated
Subsidiaries as at the point in time and for the period indicated, including all notes thereto, and consisting of at least a balance sheet and related statements of operations, shareholders equity, and cash flows and, when required by
applicable provisions of this Agreement to be audited, accompanied by the unqualified certification of a nationally-recognized or regionally-recognized firm of independent certified public accountants or other independent certified public
accountants acceptable to the Agent and footnotes to any of the foregoing, all of which, unless otherwise indicated, shall be prepared in accordance with GAAP consistently applied and in comparative form with respect to the corresponding period of
the preceding fiscal year.

Foreign Lender shall have the meaning assigned to such term in
Section 2.8.

GAAP shall mean generally accepted accounting principles
established by the Financial Accounting Standards Board or the American Institute of Certified Public Accountants and in effect in the United States from time to time.

Governmental Authority shall mean any nation, country, commonwealth, territory, government, state,
county, parish, municipality, or other political subdivision and any entity exercising executive, legislative, judicial, regulatory, or administrative functions of or pertaining to government.

Guaranties shall mean, collectively, the Guaranty dated the Closing Date by the Initial Guarantors in
favor of the Agent, in substantially the form attached hereto as Exhibit VII, and those certain agreements, each styled Guaranty, entered into after the Closing Date by newly formed Domestic Subsidiaries of the Borrower or any of
its Subsidiaries, but expressly excluding Prime Offshore LLC, in favor of the Agent for the benefit of the Lenders in substantially the form of the Guaranty executed by the Initial Guarantors or in such other form as shall be reasonably satisfactory
to the Agent.



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Guarantors shall mean the Initial Guarantors and any and
all current or future Domestic Subsidiaries of the Borrower or any of its Subsidiaries, but expressly excluding Prime Offshore LLC.

Hazardous Substances shall mean flammables, explosives, radioactive materials, hazardous wastes,
asbestos, or any material containing asbestos, polychlorinated biphenyls (PCBs), toxic substances or related materials, petroleum, petroleum products, associated oil or natural gas exploration, production, and development wastes, or any substances
defined as hazardous substances, hazardous materials, hazardous wastes, or toxic substances under the Comprehensive Environmental Response, Compensation and Liability Act, the Superfund Amendments and
Reauthorization Act, the Hazardous Materials Transportation Act, the Resource Conservation and Recovery Act, the Toxic Substances Control Act, or any other Requirement of Law.

Highest Lawful Rate shall mean, as to any Lender, the maximum non-usurious interest rate, if any (or,
if the context so requires, an amount calculated at such rate), that at any time or from time to time may be contracted for, taken, reserved, charged, or received under laws applicable to such Lender, as such laws are presently in effect or, to the
extent allowed by applicable law, as such laws may hereafter be in effect and which allow a higher maximum non-usurious interest rate than such laws now allow.

Indebtedness shall mean, as to any Person, without duplication, (a) all liabilities (excluding
capital, surplus, reserves for deferred income taxes, deferred compensation liabilities, other deferred liabilities and credits and asset retirement obligations) which in accordance with GAAP would be included in determining total liabilities as
shown on the liability side of a balance sheet, (b) all obligations of such Person evidenced by bonds, debentures, promissory notes, or similar evidences of indebtedness, (c) all other indebtedness of such Person for borrowed money, and
(d) all obligations of others, to the extent any such obligation is secured by a Lien on the assets of such Person (whether or not such Person has assumed or become liable for the obligation secured by such Lien), (e) all direct or
contingent obligations of such Person under letters of credit, bankers acceptances and similar instruments and (f) net obligations of such Person under any Commodity Hedge Agreements or Interest Rate Hedge Agreements.

Indemnified Taxes shall mean Taxes other than Excluded Taxes.

Indemnitee shall have the meaning assigned to such term in Section 5.21.



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Information shall mean all information received by the
Agent or any of the Lenders from the Borrower or any of its Subsidiaries relating to the Borrower or any of its Subsidiaries or any of their respective businesses, other than any such information that is available to the Agent or the Lenders on a
nonconfidential basis prior to disclosure by the Borrower or any of its Subsidiaries; provided that, in the case of information received from the Borrower or any of its Subsidiaries after the date hereof, such information is clearly identified at
the time of delivery as confidential.

Initial Guarantors shall mean, collectively,
PrimeEnergy Management, Prime Operating, Eastern Oil Well Service, Southwest Oilfield Construction and E O W S Midland.

Insolvency Proceeding shall mean application (whether voluntary or instituted by another Person) for or
the consent to the appointment of a receiver, trustee, conservator, custodian, or liquidator of any Person or of all or a substantial part of the Property of such Person, or the filing of a petition (whether voluntary or instituted by another
Person) commencing a case under Title 11 of the United States Code, seeking liquidation, reorganization, or rearrangement or taking advantage of any bankruptcy, insolvency, debtors relief, or other similar law of the United States, the State
of Texas, or any other jurisdiction.

Intellectual Property shall mean patents, patent
applications, trademarks, tradenames, copyrights, technology, know-how, and processes.

Interest
Expense shall mean, for any period for which the amount thereof is to be determined, any and all expenses relating to the accrual of interest on Indebtedness of the Borrower on a consolidated basis with its consolidated Subsidiaries, and
including interest expense attributable to capitalized leases.

Interest Period shall mean,
subject to the limitations set forth in Section 2.2, with respect to any LIBO Rate Loan, a period commencing on the date such Loan is made or converted from a Loan of another type pursuant to this Agreement or the last day of the next
preceding Interest Period with respect to such Loan and ending on the numerically corresponding day in the calendar month that is one, two, three or six months thereafter, as the Borrower may request in the Borrowing Request for such Loan.

Interest Rate Hedge Agreements shall mean interest rate floor, collar, cap, rate protection
or hedge agreements.

Investment in any Person shall mean any stock, bond, note, or other
evidence of Indebtedness, or any other security (other than current trade and customer accounts) of, investment or partnership interest in or loan to, such Person.

Joinder Agreement shall mean each agreement, in form and substance reasonably acceptable to the Agent,
pursuant to which a Domestic Subsidiary of the Borrower or any of its Subsidiaries, but expressly excluding Prime Offshore LLC, makes certain representations and warranties to the Agent and the Lenders and agrees to be bound by the covenants in
Article V and Article VI as if such were stated to be applicable to it and which agreement shall constitute a Loan Document.



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L/C Exposure shall mean, at any time, the then aggregate
maximum amount available to be drawn under outstanding Letters of Credit plus, prior to the making of any related Letter of Credit Payments in respect of Letters of Credit, the aggregate of all unpaid reimbursement obligations in respect of Letters
of Credit.

L/C Sublimit shall mean $15,000,000.

Lender Hedge Counterparty shall mean any Person which is a Lender or an Affiliate of any Lender at the
time when any Commodity Hedge Agreement or Interest Rate Hedge Agreement between the Borrower and such Person is entered into.

Letter of Credit shall mean any standby letter of credit issued for the account of the Borrower
pursuant to Section 2.1(e).

Letter of Credit Application shall mean the
standard letter of credit application employed by BBVA Compass, as the issuer of the Letters of Credit, from time to time in connection with its issuance of letters of credit.

Letter of Credit Payment shall mean any payment made by the Agent on behalf of the Lenders under a
Letter of Credit, to the extent that such payment has not been repaid by the Borrower.

LIBO Rate shall mean, with respect to any Interest Period for any LIBO Rate Loan, a
per annum rate of interest (rounded upwards, if necessary, to the nearest
1/100th%) appearing on Reuters Screen LIBOR01 Page (or any
successor substitute page of such service, or any successor to or substitute for such service, providing rate quotations comparable to those currently provided on such page of such service, as determined by the Agent from time to time for purposes
of providing quotations of interest rates applicable to dollar deposits in the London interbank market) at approximately 11:00 a.m. (London time) on the date that is two Business Days prior to the commencement of such Interest Period; provided that,
to the extent that an interest rate is not ascertainable pursuant to the foregoing provisions of this definition, LIBO Rate shall be the interest rate per annum determined by the Agent to be the average of the rates per annum at which
deposits in dollars are offered for such relevant Interest Period to major banks in the London interbank market in London, England by the Agent at approximately 11:00 a.m. (London time) on the date that is two Business Days prior to the beginning of
such Interest Period. The determination and calculation of the LIBO Rate and each component thereof by the Agent shall be conclusive and binding, absent manifest error.



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LIBO Rate Loan shall mean any Loan and any portion of the
Loan Balance which the Borrower has requested, in the initial Borrowing Request for such Loan or a subsequent Borrowing Request for such portion of the Loan Balance, bear interest on the basis of the Adjusted LIBO Rate and which are permitted by the
terms hereof to bear interest on the basis of the Adjusted LIBO Rate.

Lien shall mean any
interest in Property securing an obligation owed to, or a claim by, a Person other than the owner of such Property, whether such interest is based on common law, statute, or contract, and including, but not limited to, the lien or security interest
arising from a mortgage, ship mortgage, encumbrance, pledge, security agreement, conditional sale or trust receipt, or a lease, consignment, or bailment for security purposes (other than true leases or true consignments), liens of mechanics,
materialmen, and artisans, maritime liens and reservations, exceptions, encroachments, easements, rights of way, covenants, conditions, restrictions, leases, and other title exceptions and encumbrances affecting Property which secure an obligation
owed to, or a claim by, a Person other than the owner of such Property (for the purpose of this Agreement, the Borrower and each of the Guarantors shall be deemed to be the owner of any Property which it has acquired or holds subject to a
conditional sale agreement, financing lease, or other arrangement pursuant to which title to the Property has been retained by or vested in some other Person for security purposes).

Limitation Period shall mean, with respect to any Lender, any period while any amount remains owing on
the Note payable to such Lender and interest on such amount, calculated at the applicable interest rate, plus any fees or other sums payable to such Lender under any Loan Document and deemed to be interest under applicable law, would exceed the
amount of interest which would accrue at the Highest Lawful Rate.

Loan shall mean any loan
made by any Lender to or for the benefit of the Borrower pursuant to this Agreement and any payment made by the Agent, on behalf of any Lender, under a Letter of Credit.

Loan Balance shall mean, at any point in time, the aggregate outstanding principal balance of the Notes
at such time.

Loan Documents shall mean this Agreement, the Notes, the Letter of Credit
Applications, the Letters of Credit, the Security Documents, any Joinder Agreements, the Guaranties, the Fee Letter and all other documents and instruments now or hereafter delivered pursuant to the terms of or in connection with this Agreement, the
Notes, the Letter of Credit Applications, the Letters of Credit, the Security Documents, any Joinder Agreements or the Guaranties, and all renewals and extensions of, amendments and supplements to, and restatements of, any or all of the foregoing
from time to time in effect.



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Material Adverse Effect shall mean (a) any adverse
effect on the business, operations, assets, properties, liabilities (actual or contingent) or financial condition of the Borrower on a consolidated basis with its consolidated Subsidiaries which increases, in any material respect, the risk that any
of the Obligations will not be repaid as and when due, (b) any material and adverse effect upon the Collateral, (c) any material adverse effect on the validity or enforceability of any Loan Document or (d) any material adverse effect
on the rights or remedies of the Agent or the Lenders under any Loan Document or any Commodity Hedge Agreement or Interest Rate Hedge Agreement.

Monthly Reduction Amount shall mean, at any time, the amount determined as such by the Agent (with the
approval of the Lenders as required by the provisions of Section 9.9) and then in effect in accordance with the provisions of Section 2.10.

Mortgaged Properties shall mean all Oil and Gas Properties of the Borrower or PrimeEnergy Management
subject to a perfected first priority Lien (subject only to Permitted Liens) in favor of the Agent, as security for the Obligations.

Net Income shall mean, for any relevant period, the net income of the Borrower, on a consolidated basis
with its consolidated Subsidiaries during such period, determined in accordance with GAAP.

Notes shall mean, collectively, the promissory notes of the Borrower each payable to a Lender in the
face amount of up to the Facility Amount of the relevant Lender and in the form attached hereto as Exhibit I and the Additional Compass Note with all blanks completed appropriately, together with all renewals, extensions for any period,
increases, and rearrangements thereof.

Notice of Termination shall have the meaning
assigned to such term in Section 2.20.

Obligations shall mean, without
duplication of the same amount in more than one category, (a) all Indebtedness of the Borrower evidenced by the Notes, (b) the obligation of the Borrower to provide to or reimburse the Agent, as the issuer of the Letters of Credit, as the
case may be, for amounts payable, paid or incurred with respect to Letters of Credit, (c) the undrawn, unexpired amount of all outstanding Letters of Credit, (d) Indebtedness of the Borrower in respect of Commodity Hedge Agreements or
Interest Rate Hedge Agreements with Lender Hedge Counterparties, so long as in compliance with the provisions of Section 6.1 (which it is agreed shall rank pari passu with all other items listed in this definition), (e) the
obligation of the Borrower for the payment of Commitment Fees and other fees pursuant to the provisions of this Agreement or the Fee Letter,and (f) all other obligations and liabilities of the Borrower to the Agent, the Lenders and all
other Lender Hedge Counterparties, now existing or hereafter incurred, under, arising out of or in connection with any Loan Document or any



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Commodity Hedge Agreement or Interest Rate Hedge Agreement with a Lender Hedge Counterparty and in compliance with the provisions of Section 6.1, and to the extent that any of the
foregoing includes or refers to the payment of amounts deemed or constituting interest, only so much thereof as shall have accrued, been earned and which remains unpaid at each relevant time of determination.

Obtained Benefit shall mean the aggregate amount of benefits, both direct and indirect, obtained by any
of the Borrower, and the Guarantors from the extension of credit to the Borrower under this Agreement and not repaid by the Borrower or one of the Guarantors.

OFAC shall mean the Office of Foreign Assets Control of the United States Department of the Treasury or
any successor Governmental Authority.

Oil and Gas Properties shall mean fee, leasehold, or
other interests in or under mineral estates or oil, gas, and other liquid or gaseous hydrocarbon leases, including undivided interests in any such property rights owned jointly with others, with respect to Properties situated in the United States or
offshore from any State of the United States, including overriding royalty and royalty interests, leasehold estate interests, net profits interests, production payment interests, and mineral fee interests, together with contracts executed in
connection therewith and all tenements, hereditaments, appurtenances, and Properties appertaining, belonging, affixed, or incidental thereto.

Other Taxes shall mean any and all present or future stamp or documentary taxes or any other excise or
property taxes, charges or similar levies arising from any payment made under any Loan Document or from the execution, delivery or enforcement of, or otherwise with respect to, any Loan Document.

Percentage Share shall mean, as to each Lender, the percentage which such Lenders Facility Amount
constitutes of the sum of the Facility Amounts of all Lenders.

Permitted Liens shall mean
(a) Liens for taxes, assessments, or other governmental charges or levies not yet due or which (if foreclosure, distraint, sale, or other similar proceedings shall not have been initiated) are being contested in good faith by appropriate
proceedings, and such reserve as may be required by GAAP shall have been made therefor, (b) Liens in connection with workers compensation, unemployment insurance or other social security (other than Liens created by Section 4068 of
ERISA), old age pension, employee benefits, or public liability obligations which are not yet due or which are being contested in good faith by appropriate proceedings, if such reserve as may be required by GAAP shall have been made therefor,
(c) Liens in favor of vendors, carriers, warehousemen, repairmen, mechanics, workmen, materialmen, constructors, laborers, landlords or similar Liens arising by operation of law in the ordinary course of business in respect of obligations that
are not yet due or which are being contested in good faith by appropriate proceedings, if such reserve as may be



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required by GAAP shall have been made therefor, (d) Liens in favor of operators and non-operators under joint operating agreements or similar contractual arrangements arising in the ordinary
course of the business of the Borrower to secure amounts owing, which amounts are not yet due or are being contested in good faith by appropriate proceedings, if such reserve as may be required by GAAP shall have been made therefor, (e) Liens
under production sales agreements, division orders, operating agreements, and other agreements customary in the oil and gas business for processing, producing, and selling hydrocarbons securing obligations not constituting Indebtedness and provided
that such Liens do not secure obligations to deliver hydrocarbons at some future date without receiving full payment therefor within 90 days of delivery, (f) covenants, liens, rights, easements, rights of way, restrictions, and other similar
encumbrances, and minor defects in the chain of title which are customarily accepted in the oil and gas financing industry, none of which interfere with the ordinary conduct of the business of the Borrower or materially detract from the value or use
of the Property to which they apply, (g) Liens securing the purchase price of Property, including vehicles and equipment, acquired by the Borrower in the ordinary course of business (including Liens existing under conditional sale or title
retention contracts), provided that such Liens cover only the acquired Property and the aggregate unpaid purchase price secured by such Liens does not exceed $500,000, (h) Liens securing leases of equipment, provided that, as to any
particular lease, the Lien covers only the relevant leased equipment and secures only amounts which are not yet due and payable under the relevant lease or are being contested in good faith by appropriate proceedings and such reserve as required by
GAAP shall have been made therefor and the aggregate rental payable under all such leases does not exceed $1,500,000, (i) Liens listed on Schedule 1.2, and (j) Liens in favor of the Agent and other Liens expressly permitted
hereunder or in the Security Documents.

Person shall mean an individual, corporation,
partnership, limited liability company, trust, unincorporated organization, government, any agency or political subdivision of any government, or any other form of entity.

Plan shall mean, at any time, any employee benefit plan which is covered by Title IV of ERISA and in
respect of which the Borrower, any of the Guarantors or any Commonly Controlled Entity of any is (or, if such plan were terminated at such time, would under Section 4069 of ERISA be deemed to be) an employer as defined in
Section 3(5) of ERISA.

Principal Office shall mean the office of BBVA Compass in
Houston, Texas located at 24 Greenway Plaza, Suite 1400A, Houston, Texas 77046 or such other office as the Agent may designate in writing to the Borrower and/or the Lenders from time to time, the wiring instructions to such currently designated
office being as follows:

Compass Bank

ABA No. 113010547

Account No. 90124099

Reference: PrimeEnergy



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Projected Production shall mean, at any time, the volumes
of proved developed producing reserves of each commodity category reasonably projected, in the most recent Reserve Report provided pursuant to the provisions of Section 5.4, to be produced from the Oil and Gas Properties of the Borrower
or PrimeEnergy Management during the terms of existing or proposed Commodity Hedge Agreements between the Borrower and Approved Hedge Counterparties, as such projection may be adjusted by the Agent.

Property shall mean any interest in any kind of property or asset, whether real, personal or mixed,
tangible or intangible.

Regulation D shall mean Regulation D of the Board of Governors of
the Federal Reserve System (or any successor).

Regulatory Change shall mean, with respect
to any Lender, the passage, adoption, institution, or amendment of any federal, state, local, or foreign Requirement of Law (including Regulation D), or any interpretation, directive, or request (whether or not having the force of law) of any
Governmental Authority or monetary authority charged with the enforcement, interpretation, or administration thereof, occurring after the Closing Date and applying to a class of lenders including such Lender or its Applicable Lending Office.

Release of Hazardous Substances shall mean any emission, spill, release, disposal, or
discharge, except in accordance with a valid permit, license, certificate, or approval of the relevant Governmental Authority, of any Hazardous Substance into or upon (a) the air, (b) soils or any improvements located thereon,
(c) surface water or groundwater, or (d) the sewer or septic system, or the waste treatment, storage, or disposal system servicing any Property of the Borrower or any of the Guarantors.

Replacement Lenders shall have the meaning assigned to such term in Section 2.20.

Required Lenders shall mean, at any time when no Loans or Letters of Credit are outstanding, two or
more Lenders holding in the aggregate Percentage Shares at least equal to seventy five percent (75%) of the Commitment Amount and, at any time when any Loans or Letters of Credit are outstanding, two or more Lenders which in the aggregate hold
at least equal to seventy five percent (75%) of the sum of the Loan Balance (without regard to any sale of a participation in any Loan) and the L/C Exposure.

Required Payment shall have the meaning assigned to such term in Section 2.7.



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Requirement of Law shall mean, as to any Person, the
certificate or articles of incorporation and by-laws, the certificate or articles of organization and regulations, operating agreement or limited liability company agreement, the agreement of limited partnership or other organizational or governing
documents of such Person, and any applicable law, treaty, ordinance, order, judgment, rule, decree, regulation, or determination of an arbitrator, court, or other Governmental Authority, including rules, regulations, orders, and requirements for
permits, licenses, registrations, approvals, or authorizations, in each case as such now exist or may be hereafter amended and are applicable to or binding upon such Person or any of its Property or to which such Person or any of its Property is
subject.

Reserve Report shall mean each report delivered to the Agent pursuant to the
provisions of Section 5.4.

Reserve Requirement shall mean, for any Interest
Period for any LIBO Rate Loan, the average maximum rate at which reserves (including any marginal, supplemental, or emergency reserves) are required to be maintained during such Interest Period under Regulation D by member banks of the Federal
Reserve System in Dallas, Texas, with deposits exceeding one billion Dollars against Eurocurrency liabilities (as such term is used in Regulation D) and any other reserves required by reason of any Regulatory Change to be maintained by
such member banks against (a) any category of liabilities which includes deposits by reference to which the LIBO Rate is to be determined as provided herein in the definition of the term LIBO Rate or (b) any category of
extensions of credit or other assets which include a LIBO Rate Loan.

Responsible Officer
shall mean, as to any Business Entity, its President, its Chief Financial Officer, any Vice President or any other Person duly authorized in accordance with the applicable organizational documents, bylaws, regulations or resolutions to act on behalf
of such Business Entity.

Security Documents shall mean, collectively, the security
documents in effect under the Existing Credit Agreement, the security documents, if any, executed and delivered in satisfaction of the condition set forth in Section 3.1(f), any existing security document, if any, amended by any of such
documents set forth in Section 3.1(f), and all other documents and instruments at any time executed as security for all or any portion of the Obligations, as such instruments may be amended, supplemented, restated, or otherwise modified
from time to time.

Subsidiary shall mean, as to any Person, any Business Entity of which
shares of stock or other equity interests having ordinary voting power (other than stock or other equity interests having such power only by reason of the happening of a contingency) to elect a majority of the board of directors or other governing
body or other managers of such Business Entity are at the time owned, or the management of which is otherwise controlled, directly or indirectly through one or more intermediaries, or both, by such Person.



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Subsidiary Guarantors shall mean the Domestic
Subsidiaries of the Borrower or any Subsidiary of any such Subsidiary, but expressly excluding Prime Offshore LLC, which are Guarantors.

Superfund Site shall mean those sites listed on the Environmental Protection Agency National Priority
List and eligible for remedial action or any comparable state registries or list in any state of the United States.

Taxes shall mean any and all present or future taxes, levies, imposts, duties, fees, deductions,
charges or withholdings imposed by any Governmental Authority.

Terminated Lender shall have
the meaning assigned to such term in Section 2.20.

Termination Date shall have
the meaning assigned to such term in Section 2.20.

Transferee shall mean any
Person to which any Lender has sold, assigned, transferred, or granted a participation in any of the Obligations, as authorized pursuant to the provisions of Section 9.1, and any Person acquiring, by purchase, assignment, transfer, or
participation, from any such purchaser, assignee, transferee, or participant, any part of such Obligations.

UCC shall mean the Uniform Commercial Code as from time to time in effect in the State of Texas.

USA Patriot Act shall mean the Uniting and Strengthening America by Providing Appropriate
Tools required to Intercept and Obstruct Terrorism Act of 2001, Pub. L. No. 107 56, 115 Stat. 272 (2001), as the same has been, or shall hereafter be, renewed, extended, amended or replaced.

1.3 Undefined Financial Accounting Terms. Financial accounting terms used in this Agreement without definition are used herein
with the respective meanings assigned thereto in accordance with GAAP at the time in effect.

1.4 References.
References in this Agreement to Schedules, Exhibits, Articles or Section numbers shall be to Schedules, Exhibits, Articles or Sections of this Agreement, unless expressly stated to the contrary. References in this Agreement to hereby,
herein, hereinafter, hereinabove, hereinbelow, hereof, hereunder and words of similar import shall be to this Agreement in its entirety and not only to the particular Schedule,
Exhibit, Article, or Section in which such reference appears. Specific enumeration herein shall not exclude the general and, in such regard, the terms includes and including used herein shall mean includes, without
limitation, or including, without limitation, as the case may be, where appropriate. Except as otherwise indicated, references in this Agreement to statutes, sections, or regulations are to be construed as including all statutory
or regulatory provisions consolidating, amending, replacing, succeeding, or supplementing the statute, section, or regulation referred to. References in this Agreement to writing include printing, typing, lithography, facsimile



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reproduction, and other means of reproducing words in a tangible visible form. References in this Agreement to agreements and other contractual instruments shall be deemed to include all exhibits
and appendices attached thereto and all subsequent amendments and other modifications to such instruments, but only to the extent such amendments and other modifications are not prohibited by the terms of this Agreement. References in this Agreement
to Persons include their respective successors and permitted assigns.

1.5 Articles and Sections. This Agreement, for
convenience only, has been divided into Articles and Sections; and it is understood that the rights and other legal relations of the parties hereto shall be determined from this instrument as an entirety and without regard to the aforesaid division
into Articles and Sections and without regard to headings prefixed to such Articles or Sections.

1.6 Number and
Gender. Whenever the context requires, reference herein made to the single number shall be understood to include the plural; and likewise, the plural shall be understood to include the singular. Definitions of terms defined in the singular or
plural shall be equally applicable to the plural or singular, as the case may be, unless otherwise indicated. Words denoting sex shall be construed to include the masculine, feminine and neuter, when such construction is appropriate; and specific
enumeration shall not exclude the general but shall be construed as cumulative.

1.7 Incorporation of Schedules and
Exhibits. The Schedules and Exhibits attached to this Agreement are incorporated herein and shall be considered a part of this Agreement for all purposes.

1.8 Negotiated Transaction. Each party to this Agreement affirms to the others that it has had the opportunity to consult, and
discuss the provisions of this Agreement with, independent counsel and fully understands the legal effect of each provision.

ARTICLE II

TERMS OF FACILITY

2.1 Revolving Line of Credit and Letter of Credit Facility. (a) Upon the terms and conditions (including the right of the
Lenders to decline to make any Loan, other than a Letter of Credit Payment, so long as any condition to the making of such Loan set forth in Section 3.2 has not been satisfied) and relying on the representations and warranties contained
in this Agreement, each Lender severally agrees to make Loans during the Commitment Period to or for the benefit of the Borrower in an aggregate outstanding principal amount not to exceed at any time the Percentage Share of such Lender of the
Commitment Amount then in effect (but such product not to exceed, at any time, the Facility Amount of the relevant Lender then in effect), minus the Percentage Share of such Lender of the then existing L/C Exposure. Loans shall be made from time to
time on any Business Day designated in a Borrowing Request.

(b) Subject to the provisions of this Agreement,
during the Commitment Period, the Borrower may borrow, repay and reborrow and convert Loans of one type or with one Interest Period into Loans of another type or with a different Interest Period. Each



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borrowing or conversion of principal of (i) Base Rate Loans shall be in an amount at least equal to $1,000,000 and a whole multiple of $10,000 and (ii) LIBO Rate Loans shall be in an
amount at least equal to $1,000,000 and a whole multiple of $100,000 and, if any LIBO Rate Loan would otherwise be in a lesser principal amount for any period, such Loan shall be a Base Rate Loan during such period. Except for prepayments made
pursuant to the provisions of Section 2.11, each prepayment of principal shall be in an amount at least equal to $100,000 and a whole multiple of $100,000. Each borrowing, prepayment, or conversion of or into a Loan of a different type
or, in the case of a LIBO Rate Loan, having a different Interest Period, shall be deemed a separate borrowing, conversion, and prepayment for purposes of the foregoing, one for each type of Loan or Interest Period.

(c) The Agent shall notify each Lender of its receipt of a Borrowing Request as soon as practicable following its receipt
thereof, including in such notice the amount of the requested Loan and the requested date for the making of the requested Loan. Not later than 11:00 a.m., Central Standard or Central Daylight Savings Time, as the case may be, on the date specified
for each borrowing, each Lender shall make available to the Agent, at an account designated by the Agent, an amount equal to the Percentage Share of such Lender of the borrowing to be made on such date. The amount so received by the Agent shall,
subject to the terms and conditions hereof, be made available to the Borrower in immediately available funds at the Principal Office. All Loans by each Lender shall be maintained at the Applicable Lending Office of such Lender and shall be evidenced
by the Note of such Lender.

(d) The failure of any Lender to make any Loan required to be made by it hereunder
shall not relieve any other Lender of its obligation to make any Loan required to be made by it, and no Lender shall be responsible for the failure of any other Lender to make any Loan.

(e) Upon the terms and conditions (including the right of the Agent to decline to issue renew or extend any Letter of
Credit so long as any condition to the issuance, renewal or extension of such Letter of Credit set forth in Section 3.3 has not been satisfied) and relying on the representations and warranties contained in this Agreement, the Agent, as
issuing bank for the Lenders, agrees, from the date of this Agreement until the date which is 30 days prior to the Commitment Termination Date, to issue, on behalf of the Lenders in their respective Percentage Shares, Letters of Credit for the
account of the Borrower and to renew and extend such Letters of Credit. Letters of Credit shall be issued, renewed, or extended from time to time on any Business Day designated by the Borrower following the receipt in accordance with the terms
hereof by the Agent of the written (or oral, confirmed promptly in writing) request by a Responsible Officer of the Borrower therefor and a Letter of Credit Application. Letters of Credit shall be issued in such amounts as the Borrower may request;
provided, however, that (i) no Letter of Credit shall have an expiration date which is less than 30 days prior to the Commitment Termination Date or, unless such Letter of Credit includes a right of the Agent to terminate or not
renew such Letter of Credit at each anniversary of the date of issuance thereof, which is more than one year after the date of issuance thereof, (ii) the Loan Balance plus the L/C Exposure, including that under any then requested Letter of
Credit, shall not exceed at any time the Commitment Amount and (iii) the L/C Exposure, including that under any then requested Letter of Credit, shall not exceed at any time the L/C Sublimit.



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(f) In connection with the issuance, renewal or extension by the Agent of
any Letter of Credit pursuant to Section 2.1(e), the Borrower shall pay to the Agent, for the account of the Lenders, a letter of credit fee in an amount equal to the greater of (i) the face amount of such Letter of Credit
multiplied by a per annum rate equal to the Applicable Margin for LIBO Rate Loans in effect at the date of issuance, renewal or extension of the relevant Letter of Credit, calculated on the basis of a year of 360 days, and actual days elapsed
(including the first day but excluding the last day), or (ii) $1,000. Such fee with respect to each Letter of Credit (other than the minimum fee of $1,000 as to any Letter of Credit, which shall be payable on the date of issuance, renewal or
extension of the relevant Letter of Credit) shall be payable quarterly in arrears on the last Business Day of each calendar quarter and at the expiry date of the relevant Letter of Credit. In addition to the foregoing fee with respect to each Letter
of Credit, the Borrower shall pay the fronting fees provided for in Section 2.14. Neither the Agent, BBVA Compass nor any Lender shall have any obligation to refund any portion of any fee payable pursuant to this
Section 2.1)(f) upon early cancellation of the relevant Letter of Credit. The Borrower also agrees to pay on demand to BBVA Compass, solely for its account as issuer of the relevant Letter of Credit, its customary letter of credit
transaction fees and expenses, including amendment fees, payable with respect to each Letter of Credit.

(g)
The Borrower agrees that neither the Agent nor any Lender shall be responsible for, nor shall the Obligations be affected by, among other things, (i) the validity or genuineness of documents or any endorsements thereon presented in connection
with any Letter of Credit, even if such documents shall in fact prove to be in any and all respects invalid, fraudulent or forged, so long as the Agent, as the issuer of such Letter of Credit, has no actual knowledge of any such invalidity, lack of
genuineness, fraud, or forgery prior to the presentment for payment of a corresponding Letter of Credit or any draft thereunder or (ii) any dispute between or among the Borrower and any beneficiary of any Letter of Credit or any other Person to
which any Letter of Credit may be transferred, or any claims whatsoever of the Borrower against any beneficiary of any Letter of Credit or any such transferee. The Borrower further acknowledges and agrees that the Agent, as the issuer of Letters of
Credit, shall be liable to the Borrower to the extent, but only to the extent, of any direct, as opposed to consequential or punitive, damages suffered by the Borrower as a result of the willful misconduct or gross negligence of the Agent as the
issuer of Letters of Credit in determining whether documents presented under a Letter of Credit complied with the terms of such Letter of Credit that resulted in either a wrongful payment under such Letter of Credit or a wrongful dishonor of a claim
or draft properly presented under such Letter of Credit. In the absence of gross negligence or willful misconduct by the Agent as the issuer of Letters of Credit, the Agent shall not be liable for any error, omission, interruption or delay in
transmission, dispatch or delivery of any message or advice, however transmitted, in connection with any Letter of Credit. The Agent, the Lenders, and the Borrower agree that any action taken or omitted by the Agent, as issuer of any Letter of
Credit, under or in connection with any Letter of Credit or the related drafts or documents, if done in the absence of gross negligence or willful misconduct, shall be binding as among the Agent, as issuer of such Letter of Credit or otherwise, the
Lenders, and the Borrower shall not put the Agent, as issuer of such Letter of Credit or otherwise, or any Lender under any liability to the Borrower.



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(h) Unless the Borrower provides to the Agent funds sufficient to allow the
Agent to pay any drawing by a beneficiary under a Letter of Credit prior to the Agent being obligated to pay the relevant drawing under a Letter of Credit, the Agent shall make a Letter of Credit Payment in payment of such drawing. Prior to any
Letter of Credit Payment in respect of any Letter of Credit, each Lender shall be deemed to be a participant, through the Agent with respect to the relevant Letter of Credit, in the obligation of the Agent, as the issuer of such Letter of Credit, in
an amount equal to the Percentage Share of such Lender of the maximum amount which is or at any time may become available to be drawn thereunder. Upon delivery by such Lender of funds requested pursuant to Section 2.1(i), such Lender
shall be treated as having purchased a participating interest in an amount equal to such funds delivered by such Lender to the Agent in the obligation of the Borrower to reimburse the Agent, as the issuer of such Letter of Credit, for any amounts
payable, paid, or incurred by the Agent, as the issuer of such Letter of Credit, with respect to such Letter of Credit.

(i) Each Lender shall be unconditionally and irrevocably liable, without regard to the occurrence of any Default or Event
of Default, to the extent of the Percentage Share of such Lender at the time of issuance of each Letter of Credit, to reimburse, on demand, the Agent, as the issuer of such Letter of Credit, for the amount of each Letter of Credit Payment under such
Letter of Credit. Each Letter of Credit Payment shall be deemed to be a Loan by each Lender to the extent of funds delivered by such Lender to the Agent with respect to such Letter of Credit Payment and shall to such extent be deemed a Loan under
and shall be evidenced by the Note of such Lender and shall be payable by the Borrower upon demand by the Agent.

(j) EACH LENDER AGREES TO INDEMNIFY
THE AGENT, AS THE ISSUER OF EACH LETTER OF CREDIT, AND THE
OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, ATTORNEYS IN FACT AND AFFILIATES OF THE
AGENT (TO THE EXTENT NOT REIMBURSED BY THE BORROWER AND WITHOUT
LIMITING THE OBLIGATION OF THE BORROWER TO DO SO), RATABLY ACCORDING
TO THE PERCENTAGE SHARE OF SUCH LENDER AT THE TIME OF ISSUANCE
OF SUCH LETTER OF CREDIT, FROM AND AGAINST ANY AND ALL LIABILITIES,
CLAIMS, OBLIGATIONS, LOSSES, DAMAGES, PENALTIES, ACTIONS, JUDGMENTS, SUITS, COSTS, EXPENSES
AND DISBURSEMENTS OF ANY KIND WHATSOEVER WHICH MAY AT ANY TIME
(INCLUDING ANY TIME FOLLOWING THE PAYMENT AND PERFORMANCE OF ALL OBLIGATIONS
AND THE TERMINATION OF THIS AGREEMENT) BE IMPOSED ON, INCURRED BY OR
ASSERTED AGAINST THE AGENT AS THE ISSUER OF SUCH LETTER OF CREDIT
OR ANY OF ITS OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, ATTORNEYS IN FACT
OR AFFILIATES IN ANY WAY RELATING TO OR ARISING OUT OF THIS
AGREEMENT OR SUCH LETTER OF CREDIT OR ANY ACTION TAKEN OR OMITTED
BY THE AGENT AS THE ISSUER OF SUCH LETTER OF CREDIT OR
ANY OF ITS OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, ATTORNEYS IN FACT OR
AFFILIATES UNDER OR IN CONNECTION WITH ANY OF THE FOREGOING, INCLUDING
ANY LIABILITIES, CLAIMS, OBLIGATIONS, LOSSES, DAMAGES, PENALTIES, ACTIONS, JUDGMENTS, SUITS,
COSTS, EXPENSES AND DISBURSEMENTS IMPOSED, INCURRED OR ASSERTED AS A RESULT
OF THE NEGLIGENCE, WHETHER SOLE OR CONCURRENT, OF THE AGENT AS THE
ISSUER OF SUCH LETTER OF CREDIT OR ANY OF ITS OFFICERS, DIRECTORS,
EMPLOYEES, AGENTS, ATTORNEYS-IN-FACT OR AFFILIATES;PROVIDED
THAT NO LENDER (OTHER THAN THE AGENT AS THE ISSUER OF A
LETTER OF CREDIT) SHALL BE LIABLE FOR THE PAYMENT OF ANY PORTION
OF SUCH LIABILITIES, OBLIGATIONS, LOSSES, DAMAGES, PENALTIES, ACTIONS, JUDGMENTS, SUITS,
COSTS, EXPENSES OR DISBURSEMENTS RESULTING FROM THE GROSS NEGLIGENCE OR WILLFUL
MISCONDUCT OF THE AGENT AS THE ISSUER OF A LETTER OF CREDIT.
THE AGREEMENTS IN THIS SECTION 2.1(J) SHALL SURVIVE THE PAYMENT AND
PERFORMANCE OF ALL OBLIGATIONS AND THE TERMINATION OF THIS AGREEMENT.



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2.2 Limitations on Interest Periods. Each Interest Period selected by the Borrower
(a) which commences on the last Business Day of a calendar month (or any day for which there is no numerically corresponding day in the appropriate subsequent calendar month) shall end on the last Business Day of the appropriate subsequent
calendar month, (b) which would otherwise end on a day which is not a Business Day shall end on the next succeeding Business Day (or, if such next succeeding Business Day falls in the next succeeding calendar month, on the next preceding
Business Day), (c) which would otherwise end after the Commitment Termination Date shall end on the Commitment Termination Date and (d) shall have a duration of not less than one month and, if any Interest Period would otherwise be a
shorter period, the relevant Loan shall be a Base Rate Loan during such period.

2.3 Limitation on Types of Loans.
Anything herein to the contrary notwithstanding, no more than six separate LIBO Rate Loans shall be outstanding at any one time, with, for purposes of this Section, all LIBO Rate Loans for the same Interest Period constituting one LIBO Rate Loan.
Anything herein to the contrary notwithstanding, if, on or prior to the determination of any interest rate for any LIBO Rate Loan for any Interest Period therefor:

(a) the Agent determines (which determination shall be conclusive, absent manifest error) that quotations of interest
rates for the deposits referred to in the definition of LIBO Rate in Section 1.2 are not being provided in the relevant amounts or for the relevant maturities for purposes of determining the rate of interest for such Loan as
provided in this Agreement; or

(b) the Agent determines (which determination shall be conclusive, absent
manifest error) that the rates of interest referred to in the definition of LIBO Rate in Section 1.2 upon the basis of which the rate of interest for such Loan for such Interest Period is to be determined do not adequately
cover the cost to the Lenders of making or maintaining such Loan for such Interest Period, then the Agent shall give the Borrower and the Lenders prompt notice thereof; and so long as such condition remains in effect, the Lenders shall be under no
obligation to make LIBO Rate Loans or to convert Base Rate Loans into LIBO Rate Loans, and the Borrower shall, on the last day of the then current Interest Period for each outstanding LIBO Rate Loan, either prepay such LIBO Rate Loan or convert such
Loan into a LIBO Rate Loan with amounts and maturities for which quotations are provided, or convert such Loan into a Base Rate Loan in accordance with the provisions of Section 2.12.

2.4 Use of Loan Proceeds and Letters of Credit. (a) Proceeds of all Loans shall be used solely by the Borrower (i) to
acquire and develop Oil and Gas Properties, (ii) for the Borrowers working capital and general business purposes and capital expenditures not otherwise prohibited under applicable provisions of this Agreement, (iii) to advance funds
to or make Investments in the Subsidiary Guarantors for their working capital and general business purposes and capital expenditures not prohibited under the provisions of this Agreement, and (iv) to pay fees and expenses incurred in connection
with this Agreement.



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(b) Letters of Credit shall be issued solely for the account of the Borrower
for general business purposes of the Borrower and the Subsidiary Guarantors not otherwise prohibited under applicable provisions of this Agreement.

2.5 Interest. Subject to applicable provisions of this Agreement (including those of Section 2.17), (a) interest
on Base Rate Loans shall accrue and be payable at a daily interest rate based on the per annum rate equal to the sum of the Adjusted Base Rate for each relevant day plus the Applicable Margin for Base Rate Loans on such day, converted to a daily
rate on the basis of a year of 365 or 366 days, as the case may be; provided, however, in no event shall such applicable rate exceed the Highest Lawful Rate, with such rate being applied on the basis of actual days elapsed (including
the first day, but excluding the last day) during the period for which interest is payable at the relevant rate, and (b) interest on LIBO Rate Loans shall accrue during each relevant Interest Period and be payable at a daily interest rate based
on the per annum rate equal to the Adjusted LIBO Rate on the first day of the relevant Interest Period plus the relevant Applicable Margin for LIBO Rate Loans on such day, converted to a daily rate on the basis of a year of 360 days;
provided, however, in no event shall such applicable rate exceed the Highest Lawful Rate, with such rate being applied on the basis of actual days elapsed (including the first day, but excluding the last day) during the period for
which interest is payable at the relevant rate. Notwithstanding the foregoing, interest on past due principal and, to the extent permitted by applicable law, past due interest and fees, shall accrue at the Default Rate and shall be payable upon
demand by the Agent at any time as to all or any portion of such interest. Interest provided for herein shall be calculated on unpaid sums actually advanced and outstanding pursuant to the terms of this Agreement and only for the period from the
date or dates of such advances to, but not including, the date or dates of repayment. In the event that the Borrower fails to select the duration of any Interest Period for any LIBO Rate Loan within the time period and otherwise as provided herein,
such Loan (if outstanding as a LIBO Rate Loan) shall be automatically converted into a Base Rate Loan on the last day of the then current Interest Period for such Loan or (if outstanding as a Base Rate Loan) shall remain as, or (if not then
outstanding) shall be made as, a Base Rate Loan.

2.6 Repayment of Loans and Interest. Accrued and unpaid interest on
each outstanding Base Rate Loan shall be due and payable monthly commencing on the first day of August, 2010 and continuing on the first day of each calendar month thereafter while any Base Rate Loan remains outstanding, the payment in each instance
to be the amount of interest which has accrued and remains unpaid in respect of the relevant Loan. Accrued and unpaid interest on each outstanding LIBO Rate Loan shall be due and payable on the earlier of (a) the last day of the Interest Period
for such LIBO Rate Loan or (b) if any Interest Period is of a duration longer than three months, on the day of the third month of the relevant Interest Period corresponding to the day preceding the initial day of such Interest Period and on the
last day of the relevant Interest Period, the payment in each instance to be the amount of interest which has accrued and remains unpaid in respect of the relevant Loan. The Loan Balance, together with all accrued and unpaid interest thereon, shall
be due and payable on the Commitment Termination Date. At the time of making each payment hereunder or under the Notes, the Borrower shall specify to the Agent the Loans or other amounts payable by the Borrower hereunder to which such payment is to
be applied. In the event the Borrower fails to so specify, or if an Event of Default has occurred and is continuing, the Agent may apply such payment as it may elect in its discretion and in accordance with the terms hereof.



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2.7 Outstanding Amounts. (a) The outstanding principal balance of the Note of
each Lender reflected by the notations of such Lender on its records shall be deemed rebuttably presumptive evidence of the principal amount owing on such Note. The liability for payment of principal and interest evidenced by each Note shall be
limited to principal amounts actually advanced and outstanding pursuant to this Agreement and interest on such amounts calculated in accordance with this Agreement.

(b) Unless the Agent shall have been notified by a Lender or the Borrower prior to the date on which any of them is
scheduled to make payment to the Agent of (in the case of a Lender) the proceeds of a Loan to be made by such Lender hereunder or (in the case of the Borrower) a payment to the Agent for the account of the Agent or one or more of the Lenders
hereunder (such payment being herein called the Required Payment), which notice shall be effective upon receipt, that it does not intend to make the Required Payment to the Agent, the Agent may assume that the Required Payment has
been made and, in reliance upon such assumption, may (but shall not be required to) make the amount thereof available to the intended recipient on such date. If such Lender or the Borrower, as the case may be, has not in fact made the Required
Payment to the Agent, the recipient of such payment shall, on demand, repay to the Agent solely for its account the amount so made available together with interest thereon in respect of each day during the period commencing on the date such amount
was so made available by the Agent until the date the Agent recovers such amount at a rate per annum equal to, in the case of a Lender as recipient, the Federal Funds Rate or, in the case of the Borrower as recipient, the Adjusted Base Rate plus the
relevant Applicable Margin.

2.8 Taxes and Time, Place, and Method of Payments. (a) All payments required pursuant
to this Agreement or the Notes shall be made without set-off or counterclaim in Dollars and in immediately available funds free and clear of, and without deduction for, any Indemnified Taxes or Other Taxes; provided, however that if
the Borrower shall be required to deduct any Indemnified Taxes or Other Taxes from such payments, then (i) the sum payable shall be increased by the amount (the Additional Amount) necessary so that after making all required
deductions (including deductions applicable to additional sums described in this paragraph) the Agent or any Lender, as the case may be, receives an amount equal to the sum it would have received had no such deductions been made, (ii) the
Borrower shall make such deductions and (iii) the Borrower shall pay the full amount deducted to the relevant Governmental Authority in accordance with applicable law. In addition, to the extent not paid in accordance with the preceding
sentence, the Borrower shall pay any Other Taxes to the relevant Governmental Authority in accordance with applicable law.

(b) SUBJECT TO THE PROVISIONS OF
SECTION 2.20, THE BORROWER SHALL INDEMNIFY THE AGENT AND EACH LENDER FOR
INDEMNIFIED TAXES AND OTHER TAXES PAID BY SUCH PERSON, INCLUDING ANY
INDEMNIFIED TAXES OR OTHER TAXES ARISING FROM THE NEGLIGENCE, WHETHER SOLE
OR CONCURRENT, OF THE AGENT OR ANY LENDER; PROVIDED,
HOWEVER, THAT THE BORROWER SHALL NOT BE OBLIGATED TO MAKE
PAYMENT TO THE AGENT OR ANY LENDER IN RESPECT OF PENALTIES, INTEREST
AND OTHER SIMILAR LIABILITIES ATTRIBUTABLE TO SUCH INDEMNIFIED TAXES OR OTHER
TAXES IF SUCH PENALTIES, INTEREST OR OTHER SIMILAR LIABILITIES ARE ATTRIBUTABLE
TO THE GROSS NEGLIGENCE OR WILLFUL MISCONDUCT OF THE PERSON SEEKING
INDEMNIFICATION.



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(c) If a Lender or the Agent shall become aware that it is entitled to claim
a refund from a Governmental Authority in respect of Indemnified Taxes or Other Taxes paid by the Borrower pursuant to this Section 2.8, including Indemnified Taxes or Other Taxes as to which it has been indemnified by the Borrower, or
with respect to which the Borrower has paid Additional Amounts pursuant to the Loan Documents, it shall promptly notify the Borrower of the availability of such refund claim and, if the Lender or the Agent, as the case may be, determines in good
faith that making a claim for refund will not have an adverse effect to its taxes or business operations, shall, within 10 days after receipt of a request by the Borrower, make a claim to such Governmental Authority for such refund at the expense of
the Borrower. If a Lender or the Agent receives a refund in respect of any Indemnified Taxes or Other Taxes paid by the Borrower pursuant to the Loan Documents, it shall within 30 days from the date of such receipt pay over such refund to the
Borrower (but only to the extent of Indemnified Taxes or Other Taxes paid pursuant to the Loan Documents, including indemnity payments made or Additional Amounts paid, by the Borrower under this Section 2.8 with respect to the Indemnified Taxes
or Other Taxes giving rise to such refund), net of all reasonable out of pocket expenses of such Lender or the Agent, as the case may be, and without interest (other than interest paid by the relevant Governmental Authority with respect to such
refund).

(d) If any Lender or the Agent is or becomes eligible under any applicable law, regulation, treaty or
other rule to a reduced rate of taxation, or a complete exemption from withholding, with respect to Indemnified Taxes or Other Taxes on payments made to it or for its benefit by the Borrower, such Lender or the Agent, as the case may be, shall, upon
the request, and at the cost and expense, of the Borrower, complete and deliver from time to time any certificate, form or other document requested by the Borrower, the completion and delivery of which are a precondition to obtaining the benefit of
such reduced rate or exemption, provided that the taking of such action by such Lender or the Agent, as the case may be, would not, in the reasonable judgment of such Lender or the Agent, as the case may be, be disadvantageous or prejudicial to such
Lender or the Agent, as the case may be, or inconsistent with its internal policies or legal or regulatory restrictions. For any period with respect to which a Lender or the Agent, as the case may be, has failed to provide any such certificate, form
or other document requested by the Borrower, such Lender or the Agent, as the case may be, shall not be entitled to any payment under this Section 2.8 in respect of any Indemnified Taxes or Other Taxes that would not have been imposed
but for such failure.

(e) Each Lender organized under the laws of the United States, any State thereof or the
District of Columbia (other than Lenders that are corporations or otherwise exempt from United States backup withholding Tax) shall (i) deliver to the Borrower and the Agent, when such Lender first becomes a Lender, upon the written request of
the Borrower or the Agent, two original copies of United States Internal Revenue Form W-9 or any successor form, properly completed and duly executed by such Lender, certifying that such Lender is exempt from United States backup withholding Tax on
payments of interest made under the Loan Documents and (ii) thereafter at each time it is so reasonably requested in writing by the Borrower or the Agent, deliver within a reasonable time two original copies of an updated United States Internal
Revenue Service Form W-9 or any successor form thereto.



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(f) Each Lender that is organized under the laws of a jurisdiction other
than the United States, any State thereof or the District of Columbia (each such Lender, a Foreign Lender) that is entitled to an exemption from or reduction of withholding Tax under the laws of the jurisdiction in which the
Borrower is located, or any treaty to which such jurisdiction is a party, with respect to payments under the Loan Documents shall deliver to the Borrower and the Agent, but only at the written request of the Borrower or the Agent, such properly
completed and duly executed documentation prescribed by applicable law or reasonably requested by the Borrower or the Agent as will permit such payments to be made without withholding or at a reduced rate, unless in the good faith opinion of the
Foreign Lender such documentation would expose the Foreign Lender to any material adverse consequence or risk. Such documentation shall be delivered by each Foreign Lender on or before the date it becomes a Lender and, if required by law, on or
before the date, if any, such Foreign Lender changes its Applicable Lending Office by designating a different lending office with respect to its Loans. In addition, each Foreign Lender shall deliver such forms promptly upon the obsolescence or
invalidity of any form previously delivered by such Foreign Lender. Each Lender (and, in the case of a Foreign Lender its lending office), represents that on the Closing Date, payments made hereunder by the Borrower or the Agent to it would not be
subject to United States Federal withholding tax.

(g) Notwithstanding the provisions of subsection
(a) above, the Borrower shall not be required to indemnify any Foreign Lender or to pay any Additional Amounts to any Foreign Lender, in respect of United States federal withholding Tax pursuant to subsection (a) above, (i) to the
extent that the obligation to withhold amounts with respect to United States federal withholding tax existed on the date such Foreign Lender became a Lender; (ii) with respect to payments to a new Applicable Lending Office with respect to a
Loan, but only to the extent that such withholding tax exceeds any withholding tax that would have been imposed on such Lender had it not designated such new Applicable Lending Office; (iii) with respect to a change by such Foreign Lender of
the jurisdiction in which it is organized, incorporated, controlled or managed, or in which it is doing business, from the date such Foreign Lender changed such jurisdiction, but only to the extent that such withholding tax exceeds any withholding
tax that would have been imposed on such Lender had it not changed the jurisdiction in which it is organized, incorporated, controlled or managed, or in which it is doing business; or (iv) to the extent that the obligation to indemnify any
Foreign Lender or to pay such Additional Amounts would not have arisen but for a failure by such Foreign Lender to comply with the provisions of Section 2.8(f).

(h) All payments by the Borrower shall be deemed received on (i) receipt or (ii) the next Business Day following
receipt if such receipt is after 3:00 p.m., Central Standard or Central Daylight Savings Time, as the case may be, on any Business Day, and shall be made to the Agent at the Principal Office. Except as provided to the contrary herein, if the due
date of any payment hereunder or under any Note would otherwise fall on a day which is not a Business Day, such date shall be extended to the next succeeding Business Day, and interest shall be payable for any principal so extended for the period of
such extension; provided, however, that in the case of any LIBO Rate Loan, if the result of such extension would be to extend such payment into another calendar month, then the relevant payment shall be due on the immediately preceding
Business Day.



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2.9 Pro Rata Treatment; Adjustments. (a) Except to the extent otherwise
expressly provided herein, (i) each borrowing pursuant to this Agreement shall be made from the Lenders pro rata in accordance with their respective Percentage Shares, (ii) each reduction of the sum of the Facility Amounts of the Lenders
at the request of the Borrower, as well as any subsequent increase in the sum of the Facility Amounts of the Lenders at the request of the Borrower and with written agreement of the Agent and all the Lenders, shall serve to adjust the Facility
Amounts of the Lenders pro rata in accordance with the Facility Amounts of the Lenders in effect immediately prior to any such adjustment, (iii) each payment of Commitment Fees shall be made to the Agent for the account of the Lenders pro rata
in accordance with their respective Percentage Shares, (iv) each payment by the Borrower of fees pursuant to the Fee Letter shall be made to BBVA Compass solely for its account, except as agreed otherwise by BBVA Compass and any other Lender,
(v) each payment of principal of Loans shall be made to the Agent for the account of the Lenders pro rata in accordance with their respective shares of the Loan Balance, (vi) each payment of interest on Loans shall be made to the Agent for
the account of the Lenders pro rata in accordance with their respective shares of the aggregate amount of interest due and payable to the Lenders, and (vii) each payment by the Borrower under Commodity Hedge Agreements and Interest Rate Hedge
Agreements with Lender Hedge Counterparties shall be made only to the Person or Persons entitled thereto.

(b)
The Agent shall distribute all payments with respect to the Obligations under the Loan Documents promptly upon receipt in like funds as received to the Lenders and any Lender Hedge Counterparties entitled to participate in any relevant payment. In
the event that any payments made hereunder by the Borrower on the Obligations under the Loan Documents at any particular time are insufficient to satisfy in full the Obligations under the Loan Documents due and payable at such time, such payments
shall be applied (i) first, to fees and expenses due pursuant to the terms of this Agreement or any other Loan Document, (ii) second, to accrued interest, (iii) third, to the Loan Balance and any other Obligations under the Loan
Documents pro rata on the basis of the ratio of the amount of all such Obligations under the Loan Documents owing to the Agent or the relevant Lender, as the case may be, to the total amount of the Obligations under the Loan Documents then owing and
(iv) fourth to cash collateralize the L/C Exposure in the manner provided in Section 2.11(a).

(c) If any Lender (for purposes of this Section, a Benefited Lender) shall at any time receive any
payment of all or part of its portion of the Obligations under the Loan Documents, or receive any Collateral in respect thereof (whether voluntarily or involuntarily, by set-off, pursuant to events or proceedings of the nature referred to in
Section 7.1(f) or Section 7.1(g), or otherwise) in an amount greater than such Lender was entitled to receive pursuant to the terms hereof, such Benefited Lender shall purchase for cash from the other Lenders such portion of
the Obligations under the Loan Documents of such other Lenders, or shall provide such other Lenders with the benefits of any such Collateral or the proceeds thereof, as shall be necessary to cause such Benefited Lender to share the excess payment or
benefits of such Collateral or proceeds with each of the Lenders according to the terms hereof. If all or any portion of such excess payment or benefits is thereafter recovered from such Benefited Lender, such purchase shall be rescinded and the
purchase price and benefits returned by such Lender, to the extent of such recovery, but without interest. The Borrower agrees that each such Lender so purchasing a portion of the Obligations under the Loan Documents of another Lender may exercise
all rights of payment (including rights of set-off) with respect to such portion as fully as if such Lender were the direct holder of such portion. If any Lender ever receives, by voluntary payment, exercise of rights of set-off or bankers
lien, counterclaim, cross-action or otherwise,



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any funds of the Borrower to be applied to the Obligations under the Loan Documents, or receives any proceeds by realization on or with respect to any Collateral, all such funds and proceeds
shall be forwarded immediately to the Agent for distribution in accordance with the terms of this Agreement.

2.10
Borrowing Base and Monthly Reduction Amount. (a) The Borrowing Base as of the Closing Date is acknowledged by the Borrower, the Agent and the Lenders to be $100,000,000. Commencing on the fifteenth day of December, 2010 and continuing
thereafter on the fifteenth day of each calendar month through the Commitment Termination Date, the amount of the Borrowing Base then in effect shall be reduced by the Monthly Reduction Amount, which Monthly Reduction Amount as of the Closing Date
is acknowledged to be $2,000,000.

(b) The Borrowing Base and the Monthly Reduction Amount shall be
redetermined, by the Agent, with the approval of the Lenders as required pursuant to the provisions of Section 9.9, semi-annually (following receipt of each Reserve Report to be provided no later than each May 1 and November 1
prior to the Commitment Termination Date, pursuant to Section 5.4) on the basis of information supplied by the Borrower in compliance with the provisions of this Agreement, including Reserve Reports, and all other information available
to the Agent and the Lenders. In addition, the Agent, with the approval of the Lenders as required pursuant to the provisions of Section 9.9, shall, in the normal course of business following a request of the Borrower, redetermine the
Borrowing Base and the Monthly Reduction Amount; provided, however, the Agent and the Lenders shall not be obligated to respond to more than one such request annually. Notwithstanding the foregoing, the Borrowing Base in effect at any
time shall be subject to reduction in accordance with applicable provisions of Section 6.4 and the Agent, with the approval of the Lenders as required pursuant to the provisions of Section 9.9, may at its discretion and
shall, upon request by the Required Lenders and with the approval of the Lenders as required pursuant to the provisions of Section 9.9, redetermine the Borrowing Base and the Monthly Reduction Amount at any time; provided,
however, the Agent and the Lenders shall not be entitled to more than one such unscheduled redetermination annually.

(c) Upon each determination of the Borrowing Base and the Monthly Reduction Amount, the Agent shall notify the Borrower
orally (confirming such notice promptly in writing) of such determination, and, subject to the operation of the Monthly Reduction Amount, the Borrowing Base and the Monthly Reduction Amount so communicated to the Borrower shall become effective upon
such oral notification and shall remain in effect until the next subsequent determination of the Borrowing Base and the Monthly Reduction Amount.

(d) The Borrowing Base shall represent the determination by the Agent and the Lenders, in accordance with the applicable
definitions and provisions herein contained and the customary lending practices of the Agent and the Lenders for loans of this nature (but taking into account floor and cap prices or other price protection under Commodity Hedge Agreements with
Approved Hedge Counterparties), of the value, for loan purposes, of the Mortgaged Properties and any other Oil and Gas Properties of the Borrower, PrimeEnergy Management or limited partnerships in which the Borrower owns a partnership interest and
such partnership interest is subject to a Lien in favor of the Agent securing the Obligations acceptable to the



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Agent and the Lenders, subject, in the case of any increase in the Borrowing Base, to the credit approval processes of the Agent and each of the Lenders. Furthermore, the Borrower and the
Guarantors acknowledge that the determination of the Borrowing Base contains an equity cushion (market value in excess of loan value), which is acknowledged by the Borrower and the Guarantors to be essential for the adequate protection of the Agent
and the Lenders.

2.11 Mandatory Prepayments. (a) If at any time, as a result of the second sentence of subsection
(a) of Section 2.10, the sum of the Loan Balance and the L/C Exposure exceeds the Commitment Amount then in effect, the Borrower shall, within three Business Days of receipt of notice from the Agent of such occurrence, prepay such
portion of the Loan Balance and/or, as provided below in this subsection (a), provide cash as Collateral so that the sum of the Loan Balance and the L/C Exposure does not exceed the Commitment Amount then in effect. If at any time, other than as a
result of the second sentence of subsection (a) of Section 2.10, the sum of the Loan Balance and the L/C Exposure exceeds the Commitment Amount then in effect (such excess, a Deficiency), the Borrower shall in
accordance with the provisions of the relevant Letter of Credit Applications executed by the Borrower or otherwise to the satisfaction of the Agent, deposit with the Agent, as additional collateral securing the Obligations, an amount of cash, in
immediately available funds, equal to the L/C Exposure and, at the option of the Borrower communicated to the Agent within ten Business Days of receipt of notice from the Agent of such occurrence, (i) prepay the amount of the Deficiency, if
any, in excess of such cash collateral in five substantially equal monthly installment payments, each for application on the Loan Balance, the first of which being due on the thirtieth day following receipt by the Borrower of the relevant notice
from the Agent and the remaining such installments being due monthly on the corresponding day in each of the four subsequent calendar months, (ii) provide, within 30 days of such election by the Borrower, additional Collateral, of character and
value satisfactory to the Required Lenders in their sole discretion, and/or cash as Collateral to secure the Obligations, by way of the execution and delivery to the Agent of Security Documents in form and substance reasonably satisfactory to the
Agent or (iii) affect any combination of the alternatives described in clauses (i) and (ii) of this sentence and acceptable to the Required Lenders in their sole discretion. Any prepayment pursuant to the provisions of this
Section 2.11(a) shall be without premium or penalty, except as provided in Section 2.18, and the amount of any such prepayment may be reborrowed if otherwise available to the Borrower pursuant to the terms of this Agreement.
The cash deposited with the Agent in satisfaction of the requirement provided in this Section 2.11(a) shall be invested, at the express direction of the Borrower as to investment vehicle and maturity (which shall be no later than the
latest expiry date of any then outstanding Letter of Credit), for the account of the Borrower in cash or cash equivalent investments offered by or through BBVA Compass.

(b) Net proceeds (being gross proceeds minus reasonable and customary transaction costs) from sales of Oil and Gas
Properties of the Borrower or PrimeEnergy Management permitted pursuant to the provisions of Section 6.4 or with the waiver of the prohibition of Section 6.4 by the Agent and the Required Lenders shall be applied,
substantially contemporaneously with receipt of any such net proceeds, to reduce any then existing Deficiency, notwithstanding any provision of Section 2.11(a) regarding the elimination of any Deficiency. Any prepayment pursuant to the
provisions of this Section 2.11(b) shall be without premium or penalty, except as provided in Section 2.18.



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2.12 Voluntary Prepayments and Conversions of Loans. Subject to applicable provisions
of this Agreement, the Borrower shall have the right at any time or from time to time to prepay Loans without prepayment penalty and to convert Loans of one type or with one Interest Period into Loans of another type or with a different Interest
Period; provided, however, that (a) the Borrower shall give the Agent notice of each such prepayment or conversion of (i) all or any portion of a LIBO Rate Loan no less than three Business Days prior to prepayment or
conversion and (ii) all or any portion of a Base Rate Loan no less than one Business Day prior to prepayment or conversion, (b) any prepayment of any LIBO Rate Loan shall be in an amount of at least equal to $100,000 and a whole multiple
of $100,000, (c) the Borrower shall pay all accrued and unpaid interest on the amounts prepaid or converted, (d) no such prepayment or conversion shall serve to postpone the repayment when due of any Obligation or any installments thereof
and (e) the Borrower shall reimburse each Lender for any losses, expenses or costs incurred by such Lender pursuant to prepayment or conversion of a Loan, or the failure of the Borrower to make such prepayment or conversion as provided in
Section 2.18. Except as provided in the immediately preceding sentence, any prepayment pursuant to the provisions of this Section 2.12 shall be without premium or penalty and the amount of any such prepayment may be
reborrowed if otherwise available to the Borrower pursuant to the terms of this Agreement.

2.13 Commitment Fees. In
addition to interest on the Notes as provided herein and other fees payable hereunder and under the Fee Letter, and to compensate the Lenders for maintaining funds available under the Facility, the Borrower shall pay to the Agent, for the account of
the Lenders, in immediately available funds, for the calendar quarter ending on the last day of September, 2010 and for each calendar quarter thereafter during the Commitment Period and on the Commitment Termination Date, a fee equal to one half of
one percent (0.50%) per annum, calculated on the basis of a year of 365 or 366 days, as the case may be, and actual days elapsed (including the first day, but excluding the last day), multiplied by the average daily amount of the Available
Commitment during the relevant quarterly or shorter period, as the case may be. Commitment Fees shall be payable by the Borrower upon receipt of an invoice therefor or statement thereof delivered by the Agent and shall be past due if not paid within
ten (10) days of receipt of each such invoice or statement.

2.14 Letter of Credit Fronting Fees. The Borrower
shall pay BBVA Compass, solely for its account and in addition to other fees with respect to Letters of Credit addressed in Section 2.1(f), at the time of issuance, renewal or extension of each Letter of Credit, a fronting fee in the
amount of one eighth of one percent (0.125%) multiplied by the face amount of the relevant Letter of Credit.

2.15
Additional Fees. Without duplication of any fees payable pursuant to this Agreement, the Borrower shall pay to BBVA Compass the fees provided in the Fee Letter.

2.16 Loans to Satisfy Obligations. Upon a Default, the Lenders may, but shall not be obligated to, make Loans for the benefit of
the Borrower and apply proceeds thereof to the satisfaction of any condition, warranty, representation or covenant of the Borrower or any of the Guarantors contained in this Agreement or any other Loan Document. Such Loans shall be evidenced by the
Notes and shall bear interest at the Adjusted Base Rate plus the relevant Applicable Margin, subject, however, to the provisions of Section 2.5 regarding the accrual of interest at the Default Rate in certain circumstances.



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2.17 General Provisions Relating to Interest. (a) It is the intention of the
parties hereto to comply strictly with the usury laws of the State of Texas and the United States of America. In this connection, there shall never be collected, charged, or received on the sums advanced hereunder interest in excess of that which
would accrue at the Highest Lawful Rate. The Borrower agrees that, to the extent the Highest Lawful Rate is determined with reference to the laws of the State to Texas, the Highest Lawful Rate shall be the weekly rate as defined in
Chapter 303 of the Texas Finance Code, provided that the Agent or any Lender may, at its election, substitute for the weekly rate the annualized or quarterly rate, as such terms are defined in the aforesaid
statute, upon the giving of notices provided for in such statute and effective upon the giving of such notices. The Agent and each Lender may also rely, to the extent permitted by applicable laws of the State of Texas or the United States of
America, on alternative maximum rates of interest under other laws of the State of Texas or the United States of America applicable to the Agent or the relevant Lender, if greater.

(b) Notwithstanding anything herein or in the Notes to the contrary, during any Limitation Period, the interest rate to be
charged on amounts evidenced by the Notes held by any affected Lenders shall be the Highest Lawful Rate, and the obligation, if any, of the Borrower for the payment of fees or other charges deemed to be interest under applicable law shall be
suspended. During any period or periods of time following a Limitation Period, to the extent permitted by applicable laws of the State of Texas or the United States of America, the interest rate to be charged hereunder on amounts evidenced by the
Notes held by any affected Lenders shall remain at the Highest Lawful Rate until such time as there has been paid to each applicable Lender (i) the amount of interest in excess of that accruing at the Highest Lawful Rate that such Lender would
have received during the Limitation Period had the interest rate remained at the otherwise applicable rate, and (ii) all interest and fees otherwise payable to such Lender but for the effect of such Limitation Period.

(c) If, under any circumstances, the aggregate amounts paid on the Notes or under this Agreement or any other Loan
Document include amounts which by law are deemed interest and which would exceed the amount permitted if the Highest Lawful Rate were in effect, the Borrower stipulates that such payment and collection will have been and will be deemed to have been,
to the extent permitted by applicable laws of the State of Texas or the United States of America, the result of mathematical error on the part of the Borrower, the Agent, and the Lenders; and the party receiving such excess shall promptly refund the
amount of such excess (to the extent only of such interest payments in excess of that which would have accrued and been payable on the basis of the Highest Lawful Rate) upon discovery of such error by such party or notice thereof from the Borrower.
In the event that the maturity of any Obligation is accelerated, by reason of an election by the Lenders or otherwise, or in the event of any required or permitted prepayment, then the consideration constituting interest under applicable laws may
never exceed that payable on the basis of the Highest Lawful Rate, and excess amounts paid which by law are deemed interest, if any, shall be credited by the Agent and the Lenders on the principal amount of the Obligations, or if the principal
amount of the Obligations shall have been paid in full, refunded to the Borrower.



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(d) All sums paid, or agreed to be paid, to the Agent and the Lenders for
the use, forbearance and detention of the proceeds of any advance hereunder shall, to the extent permitted by applicable law, be amortized, prorated, allocated, and spread throughout the full term hereof until paid in full so that the actual rate of
interest is uniform but does not exceed the Highest Lawful Rate throughout the full term hereof.

2.18 Yield
Protection. (a) Without limiting the effect of the other provisions of this Section 2.18 (but without duplication), the Borrower shall pay to the Agent and each Lender from time to time such amounts as are necessary to
compensate it for any actual and reasonable Additional Costs incurred by the Agent or such Lender.

(b) Without
limiting the effect of the other provisions of this Section 2.18 (but without duplication), the Borrower shall pay to each Lender from time to time on request such amounts as are necessary to compensate such Lender or such Lenders holding
company for any costs attributable to the maintenance by such Lender (or any Applicable Lending Office), pursuant to any Regulatory Change, of capital in respect of its Commitment, such compensation to include an amount equal to any reduction of the
rate of return on assets or equity of such Lender or such Lenders holding company (or any Applicable Lending Office) to a level below that which such Lender or such Lenders holding company (or any Applicable Lending Office) could have
achieved but for such Regulatory Change.

(c) Without limiting the effect of the other provisions of this
Section 2.18 (but without duplication), in the event that any Requirement of Law or Regulatory Change or the compliance by the Agent or any Lender therewith shall (i) impose, modify, or hold applicable any reserve, special deposit,
or similar requirement against any Letter of Credit or obligation to issue Letters of Credit, or (ii) impose upon the Agent or such Lender any other condition regarding any Letter of Credit or obligation to issue Letters of Credit, and the
result of any such event shall be to increase the cost to the Agent or such Lender of issuing or maintaining any Letter of Credit or obligation to issue Letters of Credit or any liability with respect to Letter of Credit Payments, or to reduce any
amount receivable in connection therewith, then upon demand by the Agent or such Lender, as the case may be, the Borrower shall pay to the Agent or such Lender, from time to time as specified by the Agent or such Lender, additional amounts which
shall be sufficient to compensate the Agent or such Lender for such increased cost or reduced amount receivable.

(d) Without limiting the effect of the other provisions of this Section 2.18 (but without duplication), the
Borrower shall pay to the Agent and each Lender such amounts as shall be sufficient in the reasonable opinion of the Agent and such Lender to compensate them for any reasonable loss, cost or expense and customary administrative charges incurred or
charged by and as a result of:



| | (i) | any payment, prepayment or conversion by the Borrower of a LIBO Rate Loan on a date other than the last day of an Interest Period for such Loan; or
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | any failure by the Borrower to borrow a LIBO Rate Loan or to convert a Base Rate Loan into a LIBO Rate Loan on the date for such borrowing or conversion specified in
the relevant Borrowing Request,
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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such compensation to include with respect to any LIBO Rate Loan, an amount equal to the excess, if any, of
(A) the amount of interest which would have accrued on the principal amount so paid, prepaid, converted, or not borrowed or converted for the period from the date of such payment, prepayment, conversion, or failure to borrow or convert to the
last day of the then current Interest Period for such Loan (or, in the case of a failure to borrow or convert, the Interest Period for such Loan which would have commenced on the date of such failure to borrow or convert) at the applicable rate of
interest for such Loan provided for herein over (B) the interest component of the amount the Agent or such Lender would bid were it to bid at the commencement of such period in the London interbank market for Dollar deposits of amounts
comparable to such principal amount and maturities comparable to such period, as reasonably determined by the Agent or such Lender.

(e) Determinations by the Agent or any Lender for purposes of this Section 2.18 of the effect of any
Regulatory Change on capital maintained, its costs or rate of return, its obligation to make and maintain Loans, issuing or participating in Letters of Credit, or on amounts receivable by it in respect of Loans, Letters of Credit or such other
obligations, and the additional amounts required to compensate the Agent and such Lender under this Section 2.18 shall be conclusive, absent manifest error, provided that such determinations are made on a reasonable basis. The
Agent or the relevant Lender shall furnish the Borrower with a certificate setting forth in reasonable detail the basis and amount of Additional Costs or any other loss, cost or expense incurred as a result of any such event, and the statements set
forth therein shall be conclusive, absent manifest error, provided that such determinations are made on a reasonable basis. The Agent or the relevant Lender shall (i) notify the Borrower, as promptly as practicable after the Agent or such
Lender obtains knowledge of any Additional Costs or other sums payable pursuant to this Section and determines to request compensation therefor, of any event occurring after the Closing Date which will entitle the Agent or such Lender to
compensation pursuant to this Section 2.18; and (ii) designate a different Applicable Lending Office for the Loans affected by such event if such designation will avoid the need for or reduce the amount of such compensation and will
not, in the sole opinion of the Agent or such Lender, be disadvantageous to the Agent or such Lender. If any Lender requests compensation from the Borrower under this Section 2.18, the Borrower may, after payment of all compensation then
accrued and by notice to the Agent and such Lender, require that the Loans by such Lender of the type with respect to which such compensation is requested be converted into Base Rate Loans in accordance with Section 2.12. Any
compensation requested by the Agent or any Lender pursuant to this Section 2.18 shall be due and payable within 30 days of receipt by the Borrower of any such notice.

(f) The Agent and the Lenders agree not to request, and the Borrower shall not be obligated to pay, any Additional Costs
or other sums payable pursuant to this Section unless similar Additional Costs and other sums payable are also generally assessed by the Agent or such Lender against other customers similarly situated where such customers are subject to documents
providing for such assessment.



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2.19 Illegality. Notwithstanding any other provision of this Agreement, in the event
that it becomes unlawful for any Lender or its Applicable Lending Office to (a) honor its obligation to make LIBO Rate Loans, or (b) maintain LIBO Rate Loans, then such Lender shall promptly notify the Agent and the Borrower thereof. The
obligation of such Lender to make LIBO Rate Loans and convert Base Rate Loans into LIBO Rate Loans shall then be suspended until such time as such Lender may again make and maintain LIBO Rate Loans, and the outstanding LIBO Rate Loans of such Lender
shall be converted into Base Rate Loans.

2.20 Replacement Lenders. (a) If any Lender has notified the Borrower of
its incurring Additional Costs or any other loss, cost or expense under Section 2.18 or has invoked the indemnification as to certain Taxes set forth in Section 2.8, the Borrower may, unless such Lender has notified the
Borrower that the circumstances giving rise to such notice no longer apply, terminate, in whole but not in part, the Commitment of such Lender (other than the Agent) (the Terminated Lender) at any time upon five Business
Days prior written notice to the Terminated Lender and the Agent (a Notice of Termination).

(b) In order to effect the termination of the Commitment of the Terminated Lender, the Borrower shall (i) obtain an
agreement with one or more Lenders to increase their Commitments and/or (ii) request any one or more other banking institutions to become a Lender in place and instead of such Terminated Lender and agree to accept a Commitment;
provided, however, that such one or more other banking institutions are reasonably acceptable to the Agent and become parties hereto by executing an Assignment Agreement (the Lenders or other banking institutions that agree to accept in whole or in
part the Commitment of the Terminated Lender being referred to herein as the Replacement Lenders), such that the aggregate increased and/or accepted Facility Amounts of the Replacement Lenders under clauses (i) and
(ii) above equal the Facility Amount of the Terminated Lender.

(c) The Notice of Termination shall
include the name of the Terminated Lender, the date the termination will occur (the Termination Date), the Replacement Lender or Replacement Lenders to which the Terminated Lender will assign its Commitment, and, if there will be
more than one Replacement Lender, the portion of the Terminated Lenders Commitment to be assigned to each Replacement Lender.

(d) On the Termination Date, (i) the Terminated Lender shall by execution and delivery of an Assignment Agreement
assign its Commitment to the Replacement Lender or Replacement Lenders (pro rata, if there is more than one Replacement Lender, in proportion to the portion of the Terminated Lenders Commitment to be assigned to each Replacement Lender)
indicated in the Notice of Termination and shall assign to the Replacement Lender or Replacement Lenders its Loans (if any) then outstanding pro rata as aforesaid, (ii) the Terminated Lender shall endorse its Note, payable without recourse,
representation or warranty to the order of the Replacement Lender or Replacement Lenders (pro rata as aforesaid), (iii) the Replacement Lender or Replacement Lenders shall purchase the Note held by the Terminated Lender (pro rata as aforesaid)
at a price equal to the unpaid principal amount thereof plus interest and fees accrued and unpaid to the Termination Date, (iv) the Replacement Lender or Replacement Lenders will thereupon (pro rata as aforesaid) succeed to and be substituted
in all respects for the Terminated Lender with like effect as if becoming a Lender pursuant to the terms of Section 9.1(b) and the Terminated Lender will have the rights and benefits of an assignor



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under Section 9.1(b) and (v) the Terminated Lender shall have received payment of an amount equal to its Percentage Share of the Loan Balance and accrued interest thereon,
accrued fees owed to it and all other amounts due and owing to it hereunder and under the other Loan Documents (including any loss, cost or expense under Section 2.18 incurred up to, but not including, the Termination Date). To the
extent not in conflict, the terms of Section 9.1(b) shall supplement the provisions of this Section 2.20.

2.21 Regulatory Change. In the event that by reason of any Regulatory Change or any other circumstance arising after the Closing
Date affecting any Lender, such Lender (a) incurs Additional Costs based on or measured by the excess above a level, as prescribed from time to time by any Governmental Authority with jurisdiction, of the amount of a category of deposits or
other liabilities of such Lender which includes deposits by reference to which the interest rate on any LIBO Rate Loan is determined as provided in this Agreement or a category of extensions of credit or other assets of such Lender which includes
any LIBO Rate Loan, or (b) becomes subject to restrictions on the amount of such a category of liabilities or assets which it may hold, then, at the election of such Lender with notice to the Agent and the Borrower, the obligation of such
Lender to make LIBO Rate Loans and to convert Base Rate Loans into LIBO Rate Loans shall be suspended until such time as such Regulatory Change or other circumstance ceases to be in effect, and all such outstanding LIBO Rate Loans shall be converted
into Base Rate Loans.

2.22 Letters in Lieu of Transfer Orders or Division Orders. The Agent agrees that none of the
letters in lieu of transfer or division orders provided pursuant to the provisions of Section 3.1(f) or Section 5.7 will be sent to the addressees thereof unless an Event of Default has occurred and is continuing, at which
time the Agent may, at its option and in addition to the exercise of any of its other rights and remedies, send any or all of such letters.

2.23 Power of Attorney. The Borrower hereby designates the Agent as its agent and attorney-in-fact, to act in its name, place, and
stead solely for the purpose of completing and, upon the occurrence and the continuance of an Event of Default, delivering any and all of the letters in lieu of transfer or division orders delivered by the Borrower pursuant to the provisions of
Section 3.1(f) or Section 5.7, including completing any blanks contained in such letters and attaching exhibits thereto describing the relevant Collateral. The Borrower hereby ratifies and confirms all that the Agent shall
lawfully do or cause to be done by virtue of this power of attorney and the rights granted with respect to such power of attorney. This power of attorney is coupled with the interests of the Agent in the Collateral, shall commence and be in full
force and effect as of the Closing Date and shall remain in full force and effect and shall be irrevocable so long as any Obligation remains outstanding or unpaid or any Commitment exists. The powers conferred on the Agent by this appointment are
solely to protect the interests of the Agent, the Lenders and any other Lender Hedge Counterparties under the Loan Documents and Commodity Hedge Agreements and Interest Rate Hedge Agreements between the Borrower and Lender Hedge Counterparties with
respect to the assignment of production proceeds under certain of the Security Documents and shall not impose any duty upon the Agent to exercise any such powers. The power of attorney under this Section 2.23 is expressly limited to the
rights and powers set forth herein and no additional rights or powers are herein created or implied. The Agent shall be accountable only for amounts that it actually receives as a result of the exercise of such powers and shall not be responsible to
the Borrower or any other Person for any act or failure to act with respect to such powers, except for gross negligence or willful misconduct.



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2.24 Security Interest in Accounts; Right of Offset. As security for the payment and
performance of the Obligations, the Borrower hereby transfers, assigns, and pledges to the Agent each Lender and each other Lender Hedge Counterparty (for the pro rata benefit of such Persons) and grants to the Agent, each Lender and each other
Lender Hedge Counterparty (for the pro rata benefit of such Persons) a security interest in all of its funds now or hereafter or from time to time on deposit with the Agent, such Lender or such other Lender Hedge Counterparty, with such interest of
the Agent, the Lenders and the other Lender Hedge Counterparties to be retransferred, reassigned, and/or released at the expense of the Borrower upon payment in full and complete performance of all Obligations. All remedies as secured party or
assignee of such funds shall be exercisable upon the occurrence of any Event of Default, regardless of whether the exercise of any such remedy would result in any penalty or loss of interest or profit with respect to any withdrawal of funds
deposited in a time deposit account prior to the maturity thereof. Furthermore, the Borrower hereby grants to the Agent, each Lender and each other Lender Hedge Counterparty (for the pro rata benefit of such Persons) the right, exercisable at such
time as any Obligation shall mature, whether by acceleration of maturity or otherwise, of offset or bankers lien against all of its funds now or hereafter or from time to time on deposit with the Agent, such Lender or such other Lender Hedge
Counterparty, regardless of whether the exercise of any such remedy would result in any penalty or loss of interest or profit with respect to any withdrawal of funds deposited in a time deposit account prior to the maturity thereof. Each Lender
agrees to provide the Agent, no later than the next Business Day after such exercise, written notice of its exercise of any such right of offset or bankers lien and, upon receipt of any such notice, the Agent agrees to provide a copy of such
notice to each of the Lenders other than the Lender sending the relevant notice to the Agent.

2.25 Defaulting Lenders.
Notwithstanding any provision of this Agreement to the contrary, if any Lender becomes a Defaulting Lender, then the following provisions shall apply for so long as such Lender is a Defaulting Lender:

(a) solely for purposes of subsection (a) of Section 2.9, the Percentage Share of a Defaulting Lender
shall be excluded and the Percentage Share of each non-Defaulting Lender shall be the ratio of the Facility Amount of such non-Defaulting Lender to the sum of the Facility Amounts of all non-Defaulting Lenders;

(b) fees shall cease to accrue on the unused portion of the Commitment of such Defaulting Lender pursuant to
Section 2.13 if such Lender is a Defaulting Lender pursuant to clause (a) or clause (b) of the definition of Defaulting Lender;

(c) the Percentage Share of the Commitment Amount of and the Loan Balance and L/C Exposure allocable to such Defaulting
Lender shall not be included in determining whether the Required Lenders have taken or may take any action hereunder (including any consent to any amendment or waiver pursuant to Section 9.9);



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(d) if any L/C Exposure exists at the time a Lender becomes a Defaulting
Lender then:



| | (i) | all or any part of such L/C Exposure shall be reallocated among the non-Defaulting Lenders in accordance with their respective Percentage Shares, but only to the extent
(x) the sum of the Loan Balance allocable to all non-Defaulting Lenders plus the L/C Exposure allocable to such Defaulting Lender does not exceed the total of all non-Defaulting Lenders Percentage Shares of the Commitment Amount and the
sum of the Loan Balance and the L/C Exposure allocable to any non-Defaulting Lender does not exceed such Lenders Percentage Share of the Commitment Amount and (y) the conditions set forth in Section 3.1 and
Section 3.3 are satisfied at such time;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | if the reallocation described in clause (i) immediately above cannot, or can only partially, be effected, the Borrower shall, within one Business Day following
notice by the Agent, cash collateralize the L/C Exposure allocable to such Defaulting Lender (after giving effect to any partial reallocation pursuant to clause (i) immediately above) in accordance with the procedures set forth in
Section 2.11 and subsection (d) of Section 7.2, respectively, for so long as such L/C exposure is outstanding;
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | if the Borrower cash collateralizes any portion of the L/C Exposure allocable to such Defaulting Lender pursuant to clause (ii) immediately above, the Borrower
shall not be required to pay any fees to such Defaulting Lender pursuant to subsection (f) of Section 2.1 with respect to the L/C Exposure allocable to such Defaulting Lender during the period such portion of the L/C Exposure is
cash collateralized; and
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iv) | if the L/C Exposure allocable to the non-Defaulting Lenders is reallocated pursuant to clause (ii) above, then the fees payable to the Lenders pursuant to
Section 2.13 and subsection (f) of Section 2.1, respectively, shall be adjusted in accordance with such non-Defaulting Lenders Percentage Shares as adjusted pursuant to clause (a) of this
Section 2.25.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

(e) so long as any Lender is a Defaulting Lender, the Agent shall not
be required to issue, amend or increase any Letter of Credit, unless it is satisfied that the related exposure will be one-hundred percent (100%) covered by the Commitments of the non-Defaulting Lenders and/or cash collateral will be provided
by the Borrower in accordance with



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clause (d) immediately above, and participating interests in any such newly issued or increased Letter of Credit shall be allocated among the non-Defaulting Lenders in a manner consistent
with clause (d) immediately above (and the Defaulting Lender shall not participate therein); and

(f) in
the event that the Agent and the Borrower each agree that a Defaulting Lender has adequately remedied all matters that caused such Lender to be a Defaulting Lender, then the L/C Exposure of the Lenders shall be readjusted to reflect the inclusion of
such Lenders Percentage Share of the Commitment Amount and on such date such Lender shall purchase at par such of the Loans of the other Lenders as the Agent shall determine may be necessary in order for such Lender to hold such Loans in
accordance with its Percentage Share.

ARTICLE III

CONDITIONS

The obligations of the Agent and the Lenders to enter into this Agreement and to make Loans or issue or participate in, as the case may
be, Letters of Credit are subject to the satisfaction of the following conditions precedent:

3.1 Receipt of Loan Documents
and Other Items. Neither the Lenders nor the Agent shall have any obligation under this Agreement unless and until all matters incident to the consummation of the transactions contemplated herein shall be satisfactory to the Agent and the
Lenders, and the Agent and, upon request, any Lender shall have received, reviewed and approved the following documents and other items, appropriately executed when necessary and, where applicable, acknowledged by one or more Responsible Officers of
the Borrower or other Persons, as the case may be, all in form and substance reasonably satisfactory to the Agent and dated, where applicable, of even date herewith or another date reasonably acceptable to the Agent:

(a) multiple counterparts of this Agreement as requested by the Agent;

(b) the Notes to be in place on the Closing Date, including the Additional Compass Note;

(c) a certificate or certificates dated the Closing Date issued by the secretary or an assistant secretary or another
authorized representative of the Borrower and each of the Initial Guarantors, respectively, to the effect that the organizational documents of the relevant Business Entity have not been amended since the date on which copies of such organizational
documents were last certified to Guaranty Bank, FSB as being correct and complete;

(d) a certificate or
certificates of incumbency dated the Closing Date, including specimen signatures of all officers or other representatives of the Borrower and each of the Initial Guarantors who are authorized to execute Loan Documents on behalf of the Borrower and
each of the Initial Guarantors, respectively, each such certificate being executed by the secretary or an assistant secretary or another authorized representative of the Borrower or the relevant Initial Guarantor, as the case may be;



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(e) copies of resolutions adopted by the governing body of the Borrower and
each of the Initial Guarantors approving the Loan Documents to which the relevant Business Entity is a party and authorizing the transactions contemplated herein and therein, accompanied by a certificate dated the Closing Date issued by the
secretary or an assistant secretary or another authorized representative of the Borrower or the relevant Initial Guarantor, as the case may be, to the effect that such copies are true and correct copies of resolutions duly adopted and that such
resolutions constitute all the resolutions adopted with respect to such transactions, have not been amended, modified or rescinded in any respect and are in full force and effect as of the date of such certificate;

(f) if requested by the Agent or any Lender, the following documents continuing in effect or establishing Liens in favor
or for the benefit of the Agent, for the benefit of the Lenders and any other Lender Hedge Counterparties, in and to the Collateral, including Mortgaged Properties constituting at least eighty percent (80%) of the discounted present value,
determined by the Agent in its discretion, of the aggregate proved reserves attributable to the Oil and Gas Properties of the Borrower and of PrimeEnergy Management:



| | (i) | amendments to and ratifications of the security documents in effect under the terms of the Existing Credit Agreement;
| | --- | ---------------------------------------------------------------------------------------------------------------------



| | (ii) | additional security documents from the Borrower in favor of the Agent, including a Security Agreement (Pledge) in substantially the form of Exhibit VI and
related stock powers executed in blank, covering certain Property of the Borrower, including additional Oil and Gas Properties of the Borrower or PrimeEnergy Management sufficient for the Borrower and the Subsidiary Guarantors to be in compliance
with the provisions of Section 5.5;
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | financing statement amendments and new financing statements, in each case constituent to the documents described in clauses (i) and (ii) above; and
| | ----- | ---------------------------------------------------------------------------------------------------------------------------------------------------



| | (iv) | undated letters, in form and substance reasonably satisfactory to the Agent, from the Borrower to each purchaser of production and disburser of the proceeds of
production from or attributable to the Mortgaged Properties, with the addressees left blank, authorizing and directing the addressees to make future payments attributable to production from the Mortgaged Properties directly to the Agent;
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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(g) audited consolidated Financial Statements of the Borrower and its
consolidated Subsidiaries as of December 31, 2009, unaudited consolidated Financial Statements of the Borrower and its consolidated Subsidiaries, but excluding Prime Offshore LLC, as of December 31, 2009, unaudited quarterly consolidated
Financial Statements of the Borrower and its consolidated Subsidiaries as of March 31, 2010 and unaudited quarterly consolidated Financial Statements of the Borrower and its consolidated Subsidiaries, but excluding Prime Offshore LLC, as of
March 31, 2010, in each case certified by a Responsible Officer of the Borrower as having been prepared in accordance with GAAP consistently applied and as a fair presentation of the condition of the Borrower on a consolidated basis with its
relevant consolidated Subsidiaries, subject, as to such unaudited Financial Statements, to changes resulting from normal year-end audit adjustments;

(h) certificates dated as of a recent date from the Secretary of State or other appropriate Governmental Authority
evidencing the existence or qualification and, if applicable, good standing of the Borrower and each of the Initial Guarantors in its jurisdiction of organization and in any other jurisdictions where it does business;

(i) confirmation, reasonably acceptable to the Agent, of the title of the Borrower and of limited partnerships in which
the Borrower owns a partnership interest and such partnership interest is subject to a Lien in favor of the Agent securing the Obligations, free and clear of Liens other than Permitted Liens, to Mortgaged Properties constituting at least eighty
percent (80%) of the discounted present value, as determined by the Agent in its discretion, of the proved reserves evaluated in establishing the Borrowing Base as of the Closing Date;

(j) confirmation, reasonably acceptable to the Agent, that the Oil and Gas Properties of the Borrower, PrimeEnergy
Management and limited partnerships in which the Borrower owns a partnership interest and such partnership interest is subject to a Lien in favor of the Agent securing the Obligations are in compliance, in all material respects, with applicable
Environmental Laws;

(k) copies of executed counterparts of all operating, lease, sublease, royalty, sales,
exchange, processing, farmout, bidding, pooling, unitization, communitization and other agreements relating to the Oil and Gas Properties of the Borrower, PrimeEnergy Management and limited partnerships in which the Borrower owns a partnership
interest and such partnership interest is subject to a Lien in favor of the Agent securing the Obligations, as reasonably requested by the Agent or any Lender;

(l) engineering information regarding the Oil and Gas Properties of the Borrower, PrimeEnergy Management and limited
partnerships in which the Borrower owns a partnership interest and such partnership interest is subject to a Lien in favor of the Agent securing the Obligations, as reasonably requested by the Agent;

(m) certificates evidencing the insurance coverage required by the provisions of Section 5.20;

(n) payment to BBVA Compass of any fees due as of the Closing Date pursuant to the Fee Letter;



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(o) payment from the Borrower for estimated fees charged by filing officers
and other public officials incurred or to be incurred in connection with the filing and recordation of any Security Documents and for which invoices have been presented as of the Closing Date;

(p) copies of all Commodity Hedge Agreements with Approved Hedge Counterparties, in form and substance and with
counterparties reasonably acceptable to the Agent, for purposes of determining the Borrowing Base as of the Closing Date;

(q) certificates of Responsible Officers of the Borrower and the Initial Guarantors, respectively, to the effect that all
representations and warranties made by the Borrower or the relevant Initial Guarantor, as the case may be, in this Agreement or any other Loan Document in place on the Closing Date are true and correct as of the Closing Date and that no Default or
Event of Default exists as of the Closing Date;

(r) confirmation, reasonably acceptable to the Agent, that no
event or circumstance, including any action, suit, investigation or proceeding pending, or, to the knowledge of the Borrower, threatened in any court or before any arbitrator or Governmental Authority, shall have occurred which could reasonably be
expected to have a Material Adverse Effect; and

(s) such other agreements, documents, instruments, opinions,
certificates, waivers, consents and evidence as the Agent or any Lender may reasonably request.

3.2 Each Loan. In
addition to the conditions precedent stated elsewhere herein, the Lenders shall not be obligated to make any Loan, other than in connection with a Letter of Credit Payment, unless:

(a) at least the requisite time prior to the requested date for the relevant Loan, the Borrower shall have delivered to
the Agent a Borrowing Request and a funding direction advising the Agent whether the requested Loan should be funded to an account of the Borrower at BBVA Compass or should be funded by wire transfer to an account of another Person (in which case
wire transfer instructions shall be included) and each statement or certification made in such Borrowing Request shall be true and correct in all material respects on the requested date for such Loan;

(b) no Event of Default, Default or Deficiency shall exist or will occur as a result of the making of the requested Loan;

(c) if requested by the Agent or any Lender, the Borrower shall have delivered evidence satisfactory to the
Agent or such Lender substantiating any of the matters contained in this Agreement which are necessary to enable the Borrower to qualify for such Loan;

(d) the Agent shall have received, reviewed and approved such additional documents and items as described in
Section 3.1 as may be reasonably requested by the Agent with respect to such Loan;



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(e) no event shall have occurred which, in the reasonable opinion of the
Agent or any of the Lenders, could reasonably be expected to have a Material Adverse Effect;

(f) each of the
representations and warranties of the Borrower or any of the Guarantors contained in this Agreement and the other Loan Documents shall be true and correct in all material respects and shall be deemed to be repeated by the relevant entity as if made
on the requested date for such Loan;

(g) all of the Security Documents shall be in full force and effect and
provide to the Agent the security intended thereby;

(h) neither the consummation of the transactions
contemplated hereby nor the making of such Loan shall contravene, violate or conflict with any Requirement of Law; and

(i) if the Borrower or any of its Subsidiaries, other than Prime Offshore LLC, has formed, after the Closing Date, any
Domestic Subsidiary, such Subsidiary shall have executed and delivered a Joinder Agreement and a Guaranty and, if requested by the Agent, Security Documents covering the assets of such Domestic Subsidiary and the Borrower or the relevant Subsidiary
of the Borrower holding the equity ownership shall have executed and delivered Security Documents covering all of such equity ownership as to such newly formed Domestic Subsidiaries and taken all other action requested by the Agent or any Lender to
perfect the Lien of all such Security Documents.

3.3 Issuance of Letters of Credit. The obligation of the Agent, as
the issuer of the Letters of Credit, to issue, renew, or extend any Letter of Credit is subject to the satisfaction of the following additional conditions precedent:

(a) the Borrower shall have delivered to the Agent a written (or oral, confirmed promptly in writing) request for the
issuance, renewal or extension of a Letter of Credit, a Letter of Credit Application and any other information reasonably requested by the Agent at least three Business Days prior to the requested issuance, renewal or extension date; and each
statement or certification made in such Letter of Credit Application shall be true and correct in all material respects on the requested date for the issuance of such Letter of Credit;

(b) no Event of Default, Default or Deficiency shall exist or will occur as a result of the issuance, renewal, or
extension of such Letter of Credit;

(c) if requested by the Agent or any Lender, the Borrower shall have
delivered evidence reasonably satisfactory to the Agent or such Lender substantiating any of the matters contained in this Agreement which are necessary to enable the Borrower to qualify for such Letter of Credit;

(d) the Agent shall have received, reviewed, and approved such additional documents and items as described in
Section 3.1 as may be reasonably requested by the Agent with respect to such Letter of Credit;

(e)
no event shall have occurred which, in the reasonable opinion of the Agent or any of the Lenders, could reasonably be expected to have a Material Adverse Effect;



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(f) each of the representations and warranties of the Borrower contained in
this Agreement and the other Loan Documents shall be true and correct in all material respects and shall be deemed to be repeated by the Borrower as if made on the requested date for issuance, renewal or extension of such Letter of Credit;

(g) all of the Security Documents shall be in full force and effect and provide to the Lender the security
intended thereby;

(h) neither the consummation of the transactions contemplated hereby nor the issuance,
renewal or extension of such Letter of Credit shall contravene, violate or conflict with any Requirement of Law; and

(i) the terms, provisions and beneficiary of the Letter of Credit or such renewal or extension shall be satisfactory to
the Agent, as the issuer of the Letters of Credit, in its reasonable discretion.

ARTICLE IV

REPRESENTATIONS AND WARRANTIES

To induce the Agent and the Lenders to enter into this Agreement, to induce the Agent to issue and renew Letters of Credit, and to induce
the Lenders to make the Loans and to participate in Letters of Credit, the Borrower and each of the Guarantors represents and warrants to the Agent and each Lender (which representations and warranties shall survive the delivery of the Notes) that:

4.1 Due Authorization. The execution and delivery by it of this Agreement and the borrowings by the Borrower
hereunder, the execution and delivery by the Borrower of the Notes, the repayment by the Borrower of the Notes and interest and fees provided for in the Notes, this Agreement and the Fee Letter, the execution and delivery of the Security Documents
to which it is a party and the performance by it of its obligations under the Loan Documents to which it is a party are within the power of the Borrower or such Person as the case may be, have been duly authorized by all necessary action by the
Borrower or such Person, as the case may be, and do not and will not (a) require the consent of any Governmental Authority, (b) contravene or conflict with any Requirement of Law, (c) contravene or conflict with any indenture,
instrument or other agreement to which it is a party or by which any of its Property may be presently bound or encumbered or (d) result in or require the creation or imposition of any Lien in, upon or on any of its Property under any such
indenture, instrument, or other agreement, other than under any of the Loan Documents.

4.2 Existence. Each of the
Borrower and the Guarantors is a corporation, a limited partnership, a limited liability company or other entity, as the case may be, duly organized, legally existing and, if applicable, in good standing under the laws of the state of its
organization or formation and is duly qualified as a foreign corporation, limited partnership or limited liability company and, if applicable, in good standing in all jurisdictions wherein the ownership of its Property or the operation of its
business necessitates same, other than those jurisdictions wherein the failure to so qualify would not have a Material Adverse Effect.



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4.3 Valid and Binding Obligations. Each Loan Document to which it is a party, when
duly executed and delivered by it, constitutes its legal, valid and binding obligation enforceable against it in accordance with its terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium or other laws affecting
creditors rights generally and subject to general principles of equity, regardless of whether considered in a proceeding in equity or at law.

4.4 Security Documents. The provisions of each Security Document executed by it are effective to create, in favor or for the
benefit of the Agent, a legal, valid and enforceable Lien in all of its right, title and interest in the Collateral described therein, which Lien, assuming the accomplishment of recording and filing in accordance with applicable laws prior to the
intervention of rights of other Persons, constitutes a fully perfected first-priority Lien (except as to Permitted Liens) on all of its right, title and interest in the Collateral described therein.

4.5 Title to Oil and Gas Properties. The Borrower has good and defensible title to all of its Oil and Gas Properties referenced in
the most recent Reserve Report provided pursuant to the Existing Credit Agreement, free and clear of all Liens except Permitted Liens. No Person other than the Borrower has any ownership interest, whether legal or beneficial, in the interest of the
Borrower in any of the Oil and Gas Properties of the Borrower and of PrimeEnergy Management referenced in the most recent Reserve Report provided pursuant to the Existing Credit Agreement which could reasonably be expected to have a Material Adverse
Effect.

4.6 Scope and Accuracy of Financial Statements. The consolidated Financial Statements of the Borrower and its
consolidated Subsidiaries, both those including and those excluding Prime Offshore LLC, provided to the Agent in satisfaction of the condition set forth in Section 3.1(g) present fairly the financial position and results of operations
and cash flows of the Borrower and its consolidated Subsidiaries included therein in accordance with GAAP as at the relevant point in time or for the period indicated, as applicable. No event or circumstance has occurred since March 31, 2010,
which could reasonably be expected to have a Material Adverse Effect, and no Default has occurred and is continuing.

4.7
No Material Misstatements. No information, exhibit, statement or report furnished to the Agent or any Lender by it or at its direction in connection with this Agreement or any other Loan Document contains any material misstatement of fact or
omits to state a material fact or any fact necessary to make the statements contained therein not misleading as of the date made or deemed made; provided that, with respect to projected financial information, it represents only that such information
was prepared in good faith based upon assumptions believed to be reasonable at the time; and provided, further, that projections concerning volumes attributable to the Oil and Gas Properties and production and cost estimates contained in each
Reserve Report are necessarily based upon professional opinions, estimates and projections and that none of the Borrower and the Subsidiary Guarantors represents or warrant that such opinions, estimates and projections will ultimately prove to have
been accurate.

4.8 Liabilities and Litigation. Other than as reflected in the Financial Statements provided to the
Agent in satisfaction of the condition set forth in Section 3.1(g) or listed on Schedule 4.8 under the heading Liabilities, neither the Borrower nor any of the Guarantors has any liabilities, direct or contingent,
which may materially and adversely affect its business or operations or its ownership of the Collateral. Except as set forth under the heading Litigation



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on Schedule 4.8, no litigation or other action of any nature affecting the Borrower or any of the Guarantors is pending before any Governmental Authority or, to the best of its knowledge,
threatened against or affecting it or any of its Subsidiaries which might reasonably be expected to result in any impairment of its ownership of any Collateral or have a Material Adverse Effect.

4.9 Authorizations; Consents. Except as expressly contemplated by this Agreement, no authorization, consent, approval, exemption,
franchise, permit or license of, or filing with, any Governmental Authority or any other Person is required to authorize, or is otherwise required in connection with, the valid execution and delivery by it of the Loan Documents to which it is a
party or any instrument contemplated hereby, the repayment by the Borrower of the Notes and interest and fees provided in the Notes, this Agreement and the Fee Letter, or the performance by the Borrower of the Obligations.

4.10 Compliance with Laws. It and its Properties, including any Mortgaged Properties and Oil and Gas Properties owned by it, are
in compliance in all material respects with all applicable Requirements of Law, including Environmental Laws, except in each case as could not reasonably be expected to have a Material Adverse Effect.

4.11 ERISA. It does not maintain, nor has it maintained, any Plan. It does not currently contribute to or have any obligation to
contribute to or otherwise have any liability with respect to any Plan and ERISA.

4.12 Environmental Laws. Except as
would not have a Material Adverse Effect or as described on Schedule 4.12:

(a) no Property owned by it,
or, to its knowledge, Property of others adjacent to Property owned by it, is currently on or has ever been on any federal or state list of Superfund Sites;

(b) no Hazardous Substances have been generated, transported, and/or disposed of by it at a site which was, at the time of
such generation, transportation, and/or disposal, or has since become, a Superfund Site;

(c) except in
accordance with applicable Requirements of Law or the terms of a valid permit, license, certificate, or approval of the relevant Governmental Authority, no Release of Hazardous Substances by it or from, affecting or related to any Property owned by
it has occurred; and

(d) no Environmental Complaint has been received by it.

4.13 Compliance with Federal Reserve Regulations. No transaction contemplated by the Loan Documents is in violation of, and it has
not taken any action that would result in any transaction contemplated by the Loan Documents being in violation of, any regulations promulgated by the Board of Governors of the Federal Reserve System, including Regulations T, U or X.



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4.14 Investment Company Act Compliance. It is not an investment company
or subject to regulation as an investment company within the meaning of the Investment Company Act of 1940.

4.15
Proper Filing of Tax Returns; Payment of Taxes Due. It has duly and properly filed its United States income tax returns and all other tax returns which are required to be filed and has paid all taxes shown as due from it thereon, except such
as are being contested in good faith and as to which adequate provisions and disclosures have been made or as could not reasonably be expected to have a Material Adverse Effect. The respective charges and reserves on its books with respect to taxes
and other governmental charges are adequate, except as could not reasonably be expected to have a Material Adverse Effect.

4.16 Refunds. Except as described on Schedule 4.16, no orders of, proceedings pending before, or other requirements of, the
Federal Energy Regulatory Commission, the Texas Railroad Commission, or any other Governmental Authority exist which could result in it being required to refund any portion of the proceeds received or to be received from the sale of hydrocarbons
constituting part of the Mortgaged Property or other Oil and Gas Properties owned by it, except as could not reasonably be expected to have a Material Adverse Effect.

4.17 Gas Contracts. Except as described on Schedule 4.17, (a) it is not obligated in any material respect by virtue of
any prepayment made under any contract containing a take-or-pay or prepayment provision or under any similar agreement to deliver hydrocarbons produced from or allocated to any of the Mortgaged Property or other Oil and Gas
Properties owned by it at some future date without receiving full payment therefor within 90 days of delivery, and (b) it has not produced gas, in any material amount, subject to, and neither it nor any of the Mortgaged Properties or other Oil
and Gas Properties owned by it is subject to, balancing rights of third parties or subject to balancing duties under Requirements of Law, except as to such matters for which it has established monetary reserves adequate in amount to satisfy such
obligations and has segregated such reserves from other accounts, which do not exceed $250,000 in the aggregate or as could not reasonably be expected to have a Material Adverse Effect.

4.18 Intellectual Property. Except as could not reasonably be expected to have a Material Adverse Effect, it owns or is licensed
to use all Intellectual Property necessary to conduct its business as currently conducted. Except as could not reasonably be expected to have a Material Adverse Effect, no claim has been asserted or is pending by any Person with respect to the use
of any such Intellectual Property or challenging or questioning the validity or effectiveness of any such Intellectual Property; and it knows of no valid basis for any such claim. Except as could not reasonably be expected to have a Material Adverse
Effect, the use of such Intellectual Property by it does not infringe on the rights of any Person, except for such claims and infringements as do not, in the aggregate, give rise to any material liability on its part.

4.19 Casualties or Taking of Property. Except as disclosed on Schedule 4.19, since the later of (a) March 31,
2010 or (b) the date of the most recent Financial Statements furnished to the Agent pursuant to either Section 5.2 or Section 5.3, neither its business nor any of its Property has been affected as a result of any fire,
explosion, earthquake, flood, drought, windstorm, accident, strike or other labor disturbance, embargo, requisition or taking of Property, or cancellation of contracts, permits or concessions by any Governmental Authority, riot, activities of armed
forces or acts of God, except as could not reasonably be expected to have a Material Adverse Effect.



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4.20 Principal Location. Its principal place of business and chief executive office
is located at its address set forth in Section 9.3 or at such other location as it may have, by proper written notice hereunder, advised the Agent.

4.21 Subsidiaries, Partnerships and Certain Investments. Except as set forth on Schedule 4.21, neither the Borrower nor any
of the Guarantors has any Subsidiaries; the Borrower is not a partner in any partnership; and the Borrower has not made any Investment in any Partnership.

4.22 Compliance with Anti-Terrorism Laws. (a) Neither the Borrower, any of the Guarantors nor any Affiliate of any of them is
in violation of any Anti-Terrorism Law or knowingly engages in or conspires to engage in any transaction that evades or avoids, or has the purpose of evading or avoiding, or attempts to violate, any of the prohibitions set forth in any
Anti-Terrorism Law.

(b) Neither the Borrower, any of the Guarantors nor any Affiliate of any of them is any of
the following (each a Blocked Person):



| | (i) | a Person that is listed in the annex, to, or is otherwise subject to the provisions of, Executive Order No. 13224;
| | --- | ------------------------------------------------------------------------------------------------------------------



| | (ii) | a Person owned or controlled by, or acting for or on behalf of, any Person that is listed in the annex to, or is otherwise subject to the provisions of, Executive Order
No. 13224;
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | a Person with which any bank or other financial institution is prohibited from dealing or otherwise engaging in any transaction by any Anti-Terrorism Law;
| | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iv) | a Person that commits, threatens or conspires to commit or supports terrorism as defined in Executive Order No. 13224;
| | ---- | ------------------------------------------------------------------------------------------------------------------------



| | (v) | a Person that is named as a specially designated national on the most current list published by OFAC at its official website or any replacement website or
other replacement official publication of such list; or
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vi) | a Person who is affiliated with a Person listed above.
| | ---- | ------------------------------------------------------



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(c) Neither the Borrower, any of the Guarantors nor any Affiliate of any of
them (i) conducts any business or engages in making or receiving any contribution of funds, goods or services to or for the benefit of any Blocked Person or (ii) deals in, or otherwise engages in any transaction relating to, any property
or interests in property blocked pursuant to Executive Order No. 13224.

(d) Neither the Borrower, any of
the Guarantors nor any Affiliate of any of them is in violation of any rules or regulations promulgated by OFAC or of any economic or trade sanctions administered and enforced by OFAC or engages in or conspires to engage in any transaction that
evades or avoids, or has the purpose of evading or avoiding, or attempts to violate, any of the prohibitions set forth in any rules or regulations promulgated by OFAC.

4.23 Identification Numbers. The federal taxpayer identification number and the organization number with the Secretary of State of
the state of its organization or formation are as set out on Schedule 4.23.

4.24 Solvency. Immediately after
the Closing and immediately following the making of each Loan made on the Closing Date and following the making of any Loan made after the Closing Date, after giving effect to the application of the proceeds of each such Loan, (a) the fair
value of the assets of each of the Borrower, and the Guarantors, at a fair valuation, will exceed its debts and liabilities, subordinated, contingent or otherwise, at a fair valuation; (b) the present fair saleable value of the property of each
of the Borrower, and the Guarantors will be greater than the amount that will be required to pay the probable liability of its debts and other liabilities, subordinated, contingent or otherwise, as such debts and other liabilities become absolute
and matured; (c) each of the Borrower and the Guarantors will be able to pay its debts and liabilities, subordinated, contingent or otherwise, as such debts and liabilities become absolute and matured; and (d) neither the Borrower, nor any
of the Guarantors will have unreasonably small capital with which to conduct the business in which it is engaged as such businesses are now conducted and are proposed to be conducted following the Closing Date.

ARTICLE V

AFFIRMATIVE COVENANTS

So long as any Obligation remains outstanding or unpaid or any Commitment exists, each of the Borrower and the Guarantors shall (provided
that Section 5.14 shall apply only to the Borrower):

5.1 Maintenance and Access to Records. Keep adequate
records, in accordance with GAAP, of all its transactions so that at any time, and from time to time, its true and complete financial condition may be readily determined, and promptly following the reasonable request of the Agent or any Lender, make
such records available for inspection by the Agent or any Lender and, at the expense of the Borrower, allow the Agent or any Lender to make and take away copies thereof.



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5.2 Quarterly Financial Statements and Compliance Certificates. Deliver to the Agent
and, upon request, any Lender:

(a) on or before the 50th day after the close of each quarterly period of each
fiscal year of the Borrower, a copy of the unaudited consolidated and consolidating Financial Statements of the Borrower and its consolidated Subsidiaries as at the close of the relevant quarterly period and from the beginning of the relevant fiscal
year to the end of the relevant quarterly period, such Financial Statements to be certified by a Responsible Officer of the Borrower as having been prepared in accordance with GAAP consistently applied and as a fair presentation of the financial
condition of the Borrower on a consolidated basis with its consolidated Subsidiaries, subject to changes resulting from normal year end audit adjustments;

(b) on or before the 60th day after the close of each quarterly period of each fiscal year of the Borrower, a copy of the
unaudited consolidated Financial Statements of the Borrower and its consolidated Subsidiaries, but excluding Prime Offshore LLC, as at the close of the relevant quarterly period and from the beginning of the relevant fiscal year to the end of the
relevant quarterly period, such Financial Statements to be certified by a Responsible Officer of the Borrower as having been prepared in accordance with GAAP consistently applied and as a fair presentation of the financial condition of the Borrower
on a consolidated basis with its consolidated Subsidiaries, but excluding Prime Offshore LLC, subject to changes resulting from normal year end audit adjustments; and

(c) on or before the
60thday after the close of each quarterly period of each
fiscal year of the Borrower, a Compliance Certificate prepared as of the close of such quarterly period.

5.3 Annual
Financial Statements and Compliance Certificate. Deliver to the Agent and, upon request, any Lender, on or before the 105th day after the close of each fiscal year of the Borrower, commencing with that ending on December 31, 2010:

(a) a copy of the annual audited consolidated and unaudited consolidating Financial Statements of the Borrower
and its consolidated Subsidiaries, such Financial Statements to be certified by a Responsible Officer of the Borrower as having been prepared in accordance with GAAP consistently applied and as a fair presentation of the financial condition of the
Borrower on a consolidated basis with its consolidated Subsidiaries and such audited Financial Statements to be accompanied by an unqualified opinion from a nationally-recognized or regionally-recognized firm of independent certified public
accountants or other independent certified public accountants acceptable to the Agent,

(b) a copy of the
annual unaudited consolidated Financial Statements of the Borrower and its consolidated Subsidiaries, but excluding Prime Offshore LLC, such Financial Statements to be certified by a Responsible Officer of the Borrower as having been prepared in
accordance with GAAP consistently applied and as a fair presentation of the financial condition of the Borrower on a consolidated basis with its consolidated Subsidiaries, subject to changes resulting from normal year end audit adjustments, and

(c) a Compliance Certificate prepared as of the close of the relevant fiscal year.



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5.4 Oil and Gas Reserve Reports and Production Reports. (a) Deliver to the Agent
and, upon request, any Lender, (i) no later than each May 1 during the term of this Agreement, an engineering report, in form and substance reasonably satisfactory to the Agent, prepared as of the preceding January 1 and certified by
Ryder Scott Company or another nationally-recognized or regionally-recognized firm of independent consulting petroleum engineers or other firm of independent consulting petroleum engineers acceptable to the Agent as fairly and accurately setting
forth (A) the proven and producing, shut-in, behind-pipe, and undeveloped oil and gas reserves (separately classified as such) attributable, as of January 1 of the year for which such reserve reports are furnished, to the Oil and Gas
Properties of the Borrower, PrimeEnergy Management and those limited partnerships in which the Borrower is a partner and the partnership interest of the Borrower in such limited partnerships is subject to a first priority Lien in favor of the Agent
to secure the Obligations, (B) the aggregate present value of the future net income with respect to such Oil and Gas Properties, discounted at a stated per annum discount rate of proven and producing reserves, (C) projections of the annual
rate of production, gross income, and net income with respect to such proven and producing reserves, and (D) information with respect to the take-or-pay, prepayment, and gas-balancing liabilities of the Borrower or any
relevant limited partnership and (ii) no later than November 1 of each year during the term of this Agreement, engineering reports in form and substance satisfactory to the Agent prepared by or under the supervision of Ryder Scott Company
or any other any nationally-recognized or regionally-recognized independent consulting petroleum engineer evaluating the Oil and Gas Properties of the Borrower, PrimeEnergy Management and those limited partnerships in which the Borrower is a partner
and the partnership interest of the Borrower in such limited partnership is subject to a first priority Lien in favor of the Agent to secure the Obligations as of July 1 of the year for which such reserve reports are furnished and updating the
information provided in the reports delivered pursuant to the preceding clause (i).

(b) Each of the reports
provided pursuant to Section 5.4(a) shall be submitted to the Agent together with additional data concerning pricing, quantities of production from the relevant Oil and Gas Properties, volumes of production sold, purchasers of
production, gross revenues, expenses, identification of wells listed on the relevant report owned by limited partnerships, rather than by the Borrower directly, and confirming that the working interest and net revenue interest set forth for each
such well in the relevant Reserve Report represents the Borrowers partnership interest share of the total working interest and total net revenue interest of the relevant limited partnership in the relevant well and such other information and
engineering and geological data with respect thereto as the Agent may reasonably request.

(c) Deliver to the
Agent, with the Financial Statement delivered pursuant to Section 5.2 (other than the fourth quarterly period of each fiscal year of the Borrower) and Section 5.3, a report setting forth, for each calendar month during the
then current fiscal year to date, the volume of production and sales attributable to production (and the prices at which such sales were made and the revenues derived from such sales) for each such calendar month from the Oil and Gas Properties
owned by the Borrower and PrimeEnergy Management, and setting forth the related ad valorem, severance and production taxes and lease operating expenses attributable thereto and incurred for each such calendar month.



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5.5 Title Opinions; Title Defects; Collateral. Promptly upon the request of the
Agent, furnish to the Agent title opinions, in form and substance and by counsel satisfactory to the Agent, or other confirmation of title acceptable to the Agent, covering Oil and Gas Properties constituting not less than eighty percent
(80%) of the present value, determined by the Agent in its sole discretion, of the Oil and Gas Properties included in the Borrowing Base; and promptly, but in any event within 60 days after notice by the Agent of any defect, material in the
opinion of the Agent, in value in the title of the Borrower or the relevant limited partnership to any of the Oil and Gas Properties included in the Borrowing Base, clear such title defects, and, in the event any such title defects are not cured in
a timely manner, pay all related costs and fees incurred by the Agent to do so, and provide the Agent, at all times during the term of this Agreement, with valid first priority Liens on Oil and Gas Properties or partnership interests constituting
not less than eighty percent (80%) of the present value, determined by the Agent in its sole discretion, of all the Oil and Gas Properties included in the Borrowing Base.

5.6 Notices of Certain Events. Deliver to the Agent, promptly, but in no event later than the fifth Business Day after having
knowledge of the occurrence of any of the following events or circumstances, a written statement with respect thereto, signed by a Responsible Officer of the relevant Business Entity or its general partner and setting forth the relevant event or
circumstance and the steps being taken by the relevant Business Entity with respect to such event or circumstance:

(a) any Default or Event of Default;

(b) any default by it under any contractual obligation or any litigation, investigation, or proceeding between it and any
Governmental Authority which, in either case, if not cured or if adversely determined, as the case may be, could reasonably be expected to have a Material Adverse Effect;

(c) any litigation or proceeding involving it as a defendant or in which any of its Property is subject to a claim and in
which the amount involved is $1,000,000 or more and which is not covered by insurance or in which injunctive or similar relief is sought which injunctive or similar relief, if granted, could reasonably be expected to have a Material Adverse Effect;

(d) the receipt by it of any Environmental Complaint, which if adversely determined could reasonably be
expected to have a Material Adverse Effect;

(e) any actual, proposed, or threatened testing or other
investigation by any Governmental Authority or other Person concerning the environmental condition of, or relating to, any of its Property following any allegation of a violation of any Requirement of Law which if adversely determined could
reasonably be expected to have a Material Adverse Effect;

(f) any Release of Hazardous Substances by it or
from, affecting, or related to any of its Property or Property of others adjacent to any of its Property which could reasonably be expected to have a Material Adverse Effect, except in accordance with applicable Requirements of Law or the terms of a
valid permit, license, certificate, or approval of the relevant Governmental Authority, or the violation of any Environmental Law, or the revocation, suspension, or forfeiture of or failure to renew, any permit, license, registration, approval, or
authorization which could reasonably be expected to have a Material Adverse Effect;



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(g) except as to the Borrower, any change in its ownership;

(h) any change in its senior management; and

(i) any other event or condition which could reasonably be expected to have a Material Adverse Effect;

and, at least ten Business Days prior to the consummation of any such sale, written notice of any proposed sale of Oil and Gas Properties of the
Borrower, PrimeEnergy Management or any limited partnership included in the Borrowing Base, including in such written notice identification of the Oil and Gas Properties which are the subject of the proposed sale and a summary of the principal terms
of the proposed sale.

5.7 Letters in Lieu of Transfer Orders or Division Orders. Promptly upon request by the Agent at
any time and from time to time, and without limitation on the rights of the Agent pursuant to the provisions of Section 2.22 and Section 2.23, execute such letters in lieu of transfer or division orders, in addition to the
letters delivered to the Agent in satisfaction of the condition set forth in Section 3.1(f), as are necessary or appropriate to transfer and deliver to the Agent proceeds from or attributable to any Mortgaged Property.

5.8 Hedging Reports. Deliver to the Agent, with the Financial Statements delivered pursuant to Section 5.2 (other than
the fourth quarterly period of each fiscal year of the Borrower) and Section 5.3, a certificate of a Responsible Officer, in form and substance reasonably satisfactory to the Agent, setting forth as of the last Business Day of such
fiscal quarter, a true and complete list of all Interest Rate Hedge Agreements or Commodity Hedge Agreements of the Borrower, the material terms thereof (including the type, term, effective date, termination date and notional amounts or volumes),
the net market-to-market value therefor, any credit support agreements relating thereto, any margin required or supplied under any credit support document and the counterparty to each such agreement.

5.9 Additional Guaranties and Security Documents. Execute and deliver Security Documents covering all of its equity ownership in
each Domestic Subsidiary of the Borrower or any of its Subsidiaries, but expressly excluding Prime Offshore LLC, formed after the Closing Date and take all other action requested by the Agent or any Lender to perfect the Lien of all such Security
Documents and cause each Domestic Subsidiary of the Borrower formed after the Closing Date to execute and deliver a Joinder Agreement, a Guaranty in favor of the Agent, for the benefit of the Lenders, and Security Documents, as requested by the
Agent, in favor or for the benefit of the Agent, for the benefit of the Lenders, covering assets of such Domestic Subsidiary and take all such other action requested by the Agent or any Lender to perfect the Lien of such Security Documents.

5.10 Additional Information. Furnish to the Agent and any Lender, promptly upon the request of the Agent or any
Lender, such additional financial or other information concerning its assets, liabilities, operations and transactions as the Agent or any Lender may from time to time reasonably request; and notify the Agent not less than ten Business Days prior to
the occurrence of any condition or event that may change the proper location for the filing of any financing statement or other public notice or recording for the purpose of perfecting a Lien in any Collateral, including any change in its name or
jurisdiction of organization; and upon the request of the Agent, execute such additional Security Documents as may be necessary or appropriate in connection therewith.



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5.11 Compliance with Laws. Comply with all applicable Requirements of Law, including
(a) ERISA, (b) Environmental Laws and (c) all permits, licenses, registrations, approvals, and authorizations (i) related to any natural or environmental resource or media located on, above, within, related to or affected by any
of its Property, (ii) required for the performance of its operations, or (iii) applicable to the use, generation, handling, storage, treatment, transport or disposal of any Hazardous Substances, except for any noncompliance which could not
reasonably be expected to have a Material Adverse Effect; and use commercially reasonable efforts to cause all of its employees, crew members, agents, contractors, subcontractors and future lessees (pursuant to appropriate lease provisions), while
such Persons are acting within the scope of their relationship with it, to comply with all such Requirements of Law as may be necessary or appropriate to enable it to so comply.

5.12 Payment of Assessments and Charges. Pay all taxes, assessments, governmental charges, rent and other Indebtedness which, if
unpaid, might become a Lien against any of its Property, except any of the foregoing being contested in good faith and as to which an adequate reserve in accordance with GAAP has been established or unless failure to pay would not have a Material
Adverse Effect.

5.13 Maintenance of Existence or Qualification and Good Standing. Maintain its separate corporate,
limited partnership or limited liability company existence and identity, as the case may be (provided that the foregoing shall not prohibit a transaction of any type described in the proviso in Section 6.10), and, if applicable, good
standing and qualification in its jurisdiction of organization and in all jurisdictions wherein the Property now owned or hereafter acquired or business now or hereafter conducted by it necessitates same.

5.14 Payment of Notes; Performance of Obligations. Pay the Notes according to the reading, tenor and effect thereof, as modified
hereby, and do and perform every act and discharge all of the other Obligations of the Borrower.

5.15 Further
Assurances. Promptly upon written request of the Agent cure any defects in the execution and delivery of any of the Loan Documents to which it is a party and all agreements contemplated thereby, and execute, acknowledge and deliver to the Agent
or any Lender such other assurances and instruments as shall, in the reasonable opinion of the Agent or any Lender, be necessary to fulfill the terms of the Loan Documents to which it is a party.

5.16 Initial Expenses of Agent. Upon request by the Agent, promptly reimburse the Agent for, or pay directly to such special
counsel, all reasonable fees and expenses of Jackson Walker L.L.P., special counsel to the Agent, in connection with the preparation of this Agreement and all documentation contemplated hereby, the satisfaction of the conditions precedent set forth
herein, the filing and recordation of Security Documents and the consummation of the transactions contemplated in this Agreement.



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5.17 Subsequent Expenses of Agent and Lenders. Upon request by the Agent, promptly
reimburse the Agent (to the fullest extent permitted by law) for all third party, out of pocket amounts reasonably expended, advanced or incurred by or on behalf of the Agent or any Lender to evaluate the Mortgaged Properties or to satisfy any of
its obligations under any of the Loan Documents; to collect the Obligations; to ratify, amend, restate or prepare additional Loan Documents, as the case may be; for the filing and recordation of Security Documents; to enforce the rights of the Agent
or any of the Lenders under any of the Loan Documents; and to protect its Properties or business, including the Collateral, which amounts shall be deemed compensatory in nature and liquidated as to amount upon notice to the relevant Person by the
Agent and which amounts shall include (a) all court costs, (b) reasonable attorneys fees, (c) reasonable fees and expenses of auditors, accountants and independent petroleum engineers engaged by the Agent as provided in the Fee
Letter or incurred to protect the interests of the Agent and the Lenders, (d) fees and expenses incurred in connection with the participation by the Agent and the Lenders as members of the creditors committee in any Insolvency Proceeding,
(e) fees and expenses incurred in connection with lifting the automatic stay prescribed in §362 Title 11 of the United States Code, and (f) fees and expenses incurred in connection with any action pursuant to §1129 Title 11 of
the United States Code all reasonably incurred by the Agent and the Lenders in connection with the collection of any sums due under the Loan Documents, together with interest at the rate equal to the Adjusted Base Rate plus the relevant Applicable
Margin on each such amount from the date of notification that the same was expended, advanced, or incurred by the Agent or any Lender until the date it is repaid to the Agent or such Lender, with the obligations under this Section 5.17
surviving the non-assumption of this Agreement in any Insolvency Proceeding and being binding upon it and/or a trustee, receiver, custodian, or liquidator of it appointed in any such case.

5.18 Operation of Oil and Gas Properties. Develop, maintain and operate or, to the extent that the right or obligation to do so
rests with another Person, exercise commercially reasonable efforts to cause such other Person to develop, maintain and operate its Oil and Gas Properties in a manner reasonably determined by it to be prudent and workmanlike and in accordance with
customary industry standards.

5.19 Maintenance and Inspection of Properties. Maintain or, to the extent that the right
or obligation to do so rests with another Person, exercise commercially reasonable efforts to cause such other Person to maintain all of its material tangible Properties in good repair and condition, ordinary wear and tear excepted; make or, to the
extent that the right or obligation to do so rests with another Person, exercise commercially reasonable efforts to cause such other Person to make all necessary replacements thereof and operate such Properties in a manner reasonably determined by
it to be good and workmanlike; and permit any authorized representative of the Agent or any Lender, upon prior notice to visit and inspect, at reasonable times, any of its tangible Property.

5.20 Maintenance of Insurance. Maintain insurance with respect to its Properties and businesses against such liabilities,
casualties, risks and contingencies as is customary in the relevant industry and sufficient to prevent a Material Adverse Effect, all such insurance to be in amounts and from insurers reasonably acceptable to the Agent, name the Agent as an
additional insured (in the case of liability insurance) and co-loss payee (in the case of physical damage insurance), and, upon any renewal of any such insurance and at other times upon request by the



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Agent, furnish to the Agent evidence, reasonably satisfactory to the Agent, of the maintenance of such insurance. The Agent shall have the right to collect, and each of the Borrower and the
Guarantors hereby assigns to the Agent, any and all monies that may become payable under any policies of insurance relating to business interruption or by reason of damage, loss or destruction of any of the Collateral. In the event of any damage,
loss or destruction for which insurance proceeds relating to business interruption or Collateral exceed $1,000,000, the Agent may, at its option, apply all such sums or any part thereof received by it toward the payment of the Obligations, whether
matured or unmatured, application to be made first to interest and then to principal, and shall deliver to the Borrower or the relevant Guarantor, as the case may be, the balance, if any, after such application has been made. In the event of any
such damage, loss or destruction for which insurance proceeds are $1,000,000 or less, provided that no Default or Event of Default has occurred and is continuing and no Deficiency exists, the Agent shall deliver any such proceeds received by
it to the Borrower or the relevant Guarantor, as the case may be, for use to repair or replace the damaged, destroyed or lost property. In the event the Agent receives insurance proceeds not attributable to Collateral or business interruption, the
Agent shall deliver any such proceeds to the Borrower or the relevant Guarantor, as the case may be.

5.21 Environmental
Indemnification. INDEMNIFY AND HOLD THE AGENT AND EACH OF THE LENDERS AND
THEIR RESPECTIVE SHAREHOLDERS, OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, ATTORNEYS-IN-FACT
AND AFFILIATES AND EACH TRUSTEE FOR THE BENEFIT OF THE AGENT OR
THE LENDERS UNDER ANY SECURITY DOCUMENT (EACH OF THE FOREGOING AN
INDEMNITEE) HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, LOSSES,
DAMAGES, LIABILITIES, FINES, PENALTIES, CHARGES, ADMINISTRATIVE AND JUDICIAL PROCEEDINGS AND
ORDERS, JUDGMENTS, REMEDIAL ACTIONS, REQUIREMENTS AND ENFORCEMENT ACTIONS OF ANY
KIND, AND ALL REASONABLE COSTS AND EXPENSES INCURRED IN CONNECTION THEREWITH
(INCLUDING ATTORNEYS FEES AND EXPENSES), ARISING DIRECTLY OR INDIRECTLY, IN
WHOLE OR IN PART, FROM (A) THE PRESENCE OF ANY HAZARDOUS
SUBSTANCES ON, UNDER, OR FROM ANY OF ITS PROPERTY, WHETHER PRIOR TO
OR DURING THE TERM HEREOF, (B) ANY ACTIVITY CARRIED ON OR
UNDERTAKEN ON ANY OF ITS PROPERTY, WHETHER PRIOR TO OR DURING THE
TERM HEREOF, AND WHETHER BY IT OR ANY OF ITS PREDECESSORS IN
TITLE, EMPLOYEES, AGENTS, CONTRACTORS OR SUBCONTRACTORS OR ANY OTHER PERSON AT
ANY TIME OCCUPYING OR PRESENT ON SUCH PROPERTY, IN CONNECTION WITH
THE HANDLING, TREATMENT, REMOVAL, STORAGE, DECONTAMINATION, CLEANUP, TRANSPORTATION, OR DISPOSAL
OF ANY HAZARDOUS SUBSTANCES AT ANY TIME LOCATED OR PRESENT ON OR
UNDER SUCH PROPERTY, (C) ANY RESIDUAL CONTAMINATION ON OR UNDER ANY
OF ITS PROPERTY, (D) ANY CONTAMINATION OF ANY PROPERTY OR NATURAL
RESOURCES ARISING IN CONNECTION WITH THE GENERATION, USE, HANDLING, STORAGE,
TRANSPORTATION OR DISPOSAL OF ANY HAZARDOUS SUBSTANCES BY IT OR ANY
OF ITS EMPLOYEES, AGENTS, CONTRACTORS, OR SUBCONTRACTORS WHILE SUCH PERSONS ARE
ACTING WITHIN THE SCOPE OF THEIR RELATIONSHIP WITH IT, IRRESPECTIVE OF
WHETHER ANY OF SUCH ACTIVITIES WERE OR WILL BE UNDERTAKEN IN
ACCORDANCE WITH APPLICABLE REQUIREMENTS OF LAW, OR (E) THE PERFORMANCE AND
ENFORCEMENT OF ANY LOAN DOCUMENT OR ANY OTHER ACT OR OMISSION IN
CONNECTION WITH OR RELATED TO ANY LOAN DOCUMENT OR THE TRANSACTIONS
CONTEMPLATED THEREBY, INCLUDING ANY SUCH CLAIM, LOSS, DAMAGE, LIABILITY, FINE,
PENALTY, CHARGE, ADMINISTRATIVE OR JUDICIAL PROCEEDING, ORDER, JUDGMENT, REMEDIAL ACTION,
REQUIREMENT, ENFORCEMENT ACTION, COST OR EXPENSE, ARISING FROM THE NEGLIGENCE (BUT
NOT THE GROSS NEGLIGENCE OR



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WILLFUL MISCONDUCT), WHETHER SOLE OR CONCURRENT, OF ANY
INDEMNITEE; WITH THE FOREGOING INDEMNITY SURVIVING SATISFACTION OF ALL OBLIGATIONS
AND THE TERMINATION OF THIS AGREEMENT, UNLESS ALL SUCH OBLIGATIONS HAVE
BEEN SATISFIED WHOLLY IN CASH AND NOT BY WAY OF REALIZATION AGAINST
ANY COLLATERAL OR THE CONVEYANCE OF ANY PROPERTY IN LIEU THEREOF,
PROVIDED THAT SUCH INDEMNITY SHALL NOT EXTEND TO ANY ACT OR OMISSION
BY THE AGENT OR ANY LENDER WITH RESPECT TO ANY PROPERTY SUBSEQUENT
TO THE AGENT OR ANY LENDER BECOMING THE OWNER OF SUCH PROPERTY
AND WITH RESPECT TO WHICH PROPERTY SUCH CLAIM, LOSS, DAMAGE, LIABILITY,
FINE, PENALTY, CHARGE, PROCEEDING, ORDER, JUDGMENT, ACTION OR REQUIREMENT ARISES
SUBSEQUENT TO THE ACQUISITION OF TITLE THERETO BY THE AGENT OR ANY
LENDER. ALL AMOUNTS DUE UNDER THIS SECTION 5.21 SHALL BE PAYABLE ON
WRITTEN DEMAND THEREFOR.

5.22 General Indemnification.
INDEMNIFY AND HOLD EACH INDEMNITEE HARMLESS FROM AND AGAINST ANY AND
ALL LOSSES, CLAIMS, DAMAGES, LIABILITIES AND RELATED EXPENSES, INCLUDING REASONABLE
COUNSEL FEES AND EXPENSES (INCLUDING THE ALLOCATED COST OF INTERNAL COUNSEL),
INCURRED BY OR ASSERTED AGAINST ANY INDEMNITEE ARISING OUT OF, IN ANY
WAY CONNECTED WITH, OR AS A RESULT OF (A) THE EXECUTION AND
DELIVERY OF THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS, THE PERFORMANCE
BY THE PARTIES HERETO AND THERETO OF THEIR RESPECTIVE OBLIGATIONS HEREUNDER
AND THEREUNDER AND CONSUMMATION OF THE TRANSACTIONS CONTEMPLATED HEREBY AND THEREBY,
(B) THE USE OF PROCEEDS OF THE LOANS OR LETTERS OF CREDIT,
OR (C) ANY CLAIM, LITIGATION, INVESTIGATION OR PROCEEDING RELATING TO ANY
OF THE FOREGOING, WHETHER OR NOT ANY INDEMNITEE IS A PARTY THERETO,
INCLUDING ANY SUCH LOSS, CLAIM, DAMAGE, LIABILITY OR EXPENSE ARISING FROM
THE NEGLIGENCE (BUT NOT THE GROSS NEGLIGENCE OR WILLFUL MISCONDUCT), WHETHER
SOLE OR CONCURRENT, OF ANY INDEMNITEE; WITH THE FOREGOING INDEMNITY SURVIVING
SATISFACTION OF ALL OBLIGATIONS AND THE TERMINATION OF THIS AGREEMENT. ALL
AMOUNTS DUE UNDER THIS SECTION 5.22 SHALL BE PAYABLE ON WRITTEN DEMAND
THEREFOR.

5.23 Evidence of Compliance with Anti-Terrorism Laws. Deliver to the Agent and any Lender
any certification or other evidence requested from time to time by the Agent or such Lender, in their reasonable discretion, confirming its compliance with the provisions of Section 6.17.

ARTICLE VI

NEGATIVE COVENANTS

So long as any Obligation remains outstanding or unpaid or any Commitment exists, neither the Borrower nor any of the Guarantors will:

6.1 Indebtedness. (a) Create, incur, assume, or suffer to exist, and will not permit any limited partnership of
which the Borrower serves as the sole general partner or the managing general partner and which owns Oil and Gas Properties contributing to the Borrowing Base to create, incur, assume, or suffer to exist, any Indebtedness, whether by way of loan or
otherwise; provided, however, the foregoing restriction shall not apply to (i) the Obligations, (ii) unsecured



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accounts payable incurred in the ordinary course of business, which are not unpaid in excess of 60 days beyond invoice date or are being contested in good faith and as to which such reserve as is
required by GAAP has been made, (iii) Commodity Hedge Agreements, in form and substance and with an Approved Hedge Counterparty, provided that (i) the notional volumes for which (when aggregated with other Commodity Hedge Agreements
then in effect, other than basis differential swaps on volumes already hedged pursuant to other Commodity Hedge Agreements) do not exceed, as of the date such Commodity Hedge Agreement is executed, eighty five percent (85%) of the reasonably
anticipated projected production from proved developed producing reserves for each month during the period during which such Commodity Hedge Agreement is in effect for each of crude oil and natural gas, calculated separately, for each of the next
four succeeding calendar years; provided that puts and put options may be purchased on production that is subject of an acquisition, pending the completion of such acquisition, and puts, excluding the effect of the provision for pending
acquisitions, may be purchased limited to total notional volumes of all Commodity Hedge Agreements and put options not exceeding 100% of projected production from proved developed producing reserves, (iv) Interest Rate Hedge Agreements, in form
and substance and with an Approved Hedge Counterparty, provided that such agreements shall not be entered into with respect to notional principal amounts in excess of seventy five percent (75%) (when aggregated with other Interest Rate
Hedge Agreements then in effect) of the then outstanding principal amount of the Borrowers Indebtedness for borrowed money which bears interest at a floating rate, (v) Indebtedness incurred with respect to all or a portion of the purchase
price of Property acquired in the ordinary course of business not exceeding $500,000 in the aggregate for the Borrower on a consolidated basis with its consolidated Subsidiaries, but expressly excluding Prime Offshore LLC, (vi) Indebtedness
from time to time owing by any Subsidiary Guarantor to the Borrower or any other Subsidiary Guarantor or (vii) other unsecured Indebtedness of the Borrower on a consolidated basis with its consolidated Subsidiaries, but expressly excluding
Prime Offshore LLC, not exceeding $1,500,000 in the aggregate at any point in time.

(b) Vote its partnership
interest in Chase Energy, L.P., a Texas limited partnership, in favor of such entitys incurring any Indebtedness other than Indebtedness owing to the Borrower as a result of loans or advances from the Borrower not prohibited by the provisions
of Section 6.7 or Section 6.8 and Indebtedness owing to Westwind Exploration, LLC, a Texas limited liability company, in an amount equal to such Indebtedness owing to the Borrower up to $1,000,000 in the aggregate in each
fiscal year of the Borrower.

6.2 Contingent Obligations. Create, incur, assume or suffer to exist any Contingent
Obligation; provided, however, the foregoing restriction shall not apply to (a) performance guarantees, performance surety or other bonds or endorsements of items deposited for collection, in each case provided in the ordinary
course of business, (b) trade credit incurred or operating leases entered into in the ordinary course of business, (c) guarantees of payment of plugging and abandonment liabilities of Prime Offshore L.L.C., so long as such guarantees, in
the aggregate, relate to such liabilities not exceeding, in the aggregate at any time, $6,000,000, (d) the Contingent Obligation of the Borrower with respect to the Artic Loan established pursuant to that certain Amended and Restated Loan
Modification executed July 21, 2010, but to be effective June 30, 2009, by and among Artic, Prime Offshore L.L.C. and the Borrower in the form provided to the Agent or (e) the Guaranties.



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6.3 Liens; Restrictive Agreements. (a) Create, incur, assume or suffer to exist
any Lien on any of its Oil and Gas Properties or any other Property, whether now owned or hereafter acquired; provided, however, the foregoing restriction shall not apply to Permitted Liens or (b) enter into any agreement which
prohibits or limits the granting of Liens against its Property to secure the Obligations.

6.4 Sales of Assets. Sell,
transfer or otherwise dispose of, in one or any series of transactions, any of its Property, whether now owned or hereafter acquired, or enter into any agreement to do so; provided, however, the foregoing restriction shall not apply to
(a) the sale of hydrocarbons or inventory in the ordinary course of business, provided that no contract for the sale of hydrocarbons shall obligate the relevant Person to deliver hydrocarbons produced from any of its Oil and Gas
Properties at some future date without receiving full payment therefor within 60 days of delivery, (b) the sale or other disposition of Property destroyed, lost, worn out, damaged or having only salvage value or no longer used or useful in the
business in which it is used, (c) the sale, transfer or other disposition of Property from Subsidiaries of the Borrower to the Borrower, (d) so long as no Default, Event of Default or Deficiency exists or results therefrom and the
requirement below in this clause (d) as to use of the net proceeds thereof is not complied with, sales or other dispositions of Oil and Gas Properties evaluated in establishing the Borrowing Base between redeterminations of the Borrowing Base
as provided in Section 2.10 the aggregate loan value of which, as assigned thereto by the Agent in the most recent setting of the Borrowing Base in accordance with the provisions of Section 2.10, equals five percent
(5%) or less of the amount of the then existing Borrowing Base; provided, however, in connection with any such transaction, the then existing Borrowing Base shall be automatically reduced by an amount equal to such loan value of
the relevant Oil and Gas Properties and further provided, however, that, upon consummation of any such transaction, if a Deficiency exists, the Borrower shall, up to one-hundred percent (100%) of the proceeds of such sale
or other disposition, net of usual and customary reasonable fees, expenses and taxes, shall be applied, as necessary and substantially contemporaneously with receipt thereof, to cure such Deficiency, notwithstanding any provisions of
Section 2.11 to the contrary or (e) sales of equipment subject to a Lien in favor of the Agent securing the Obligations not exceeding $1,000,000 in the aggregate in each fiscal year of the Borrower.

6.5 Leasebacks. Enter into any agreement to sell or transfer any Property and thereafter rent or lease as lessee such Property or
other Property intended for the same use or purpose as the Property sold or transferred.

6.6 Sale or Discount of
Receivables. Except to minimize losses on bona fide debts previously contracted, discount or sell with recourse, or sell for less than the greater of the face or market value thereof, any of its notes receivable or accounts receivable.

6.7 Loans or Advances. Make or agree to make or allow to remain outstanding any loans or advances to any Person;
provided, however, the foregoing restriction shall not apply to (a) advances or extensions of credit in the form of accounts receivable incurred in the ordinary course of business and upon terms common in the industry for such
accounts receivable, (b) advances to employees for the payment of expenses in the ordinary course of business not exceeding $100,000 in the aggregate for the Borrower on a consolidated basis with its consolidated Subsidiaries, but expressly
excluding Prime Offshore LLC, (c) loans or advances by



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the Borrower or any Domestic Subsidiary of the Borrower to a Subsidiary Guarantor, (d) loans or advances to limited partnerships in which the interest of the Borrower therein is subject to a
first priority Lien in favor of the Agent to secure the Obligations (including, for the avoidance of doubt, Chase Energy, L.P., a Texas limited partnership) outstanding as of December 31, 2009 and additional loans and advances made thereafter
not exceeding $1,000,000 in the aggregate each calendar year when considered together with Investments by the Borrower which are the subject of clause (f) in the proviso appearing in Section 6.8 or (e) so long as (i) no
Default, Event of Default or Deficiency exists or would result therefrom and after giving effect thereto the Available Commitment equals at least fifteen percent (15%) of the then existing Commitment Amount, (ii) no portion of the proceeds
thereof is used by Prime Offshore L.L.C. to pay principal owing on the Artic Loan and (iii) the principal owing on the Artic Loan does not exceed $20,000,000, loans or advances to Prime Offshore LLC.

6.8 Investments. Make or acquire Investments in, or purchase or otherwise acquire all or substantially all of the assets of, any
Person; provided, however, the foregoing restriction shall not apply to the purchase or acquisition of (a) Oil and Gas Properties, (b) Investments in the form of (i) debt securities issued or directly and fully
guaranteed or insured by the United States Government or any agency or instrumentality thereof, with maturities of no more than one year, (ii) commercial paper of a domestic issuer rated at the date of acquisition at least P-2 by Moodys
Investor Service, Inc. or A-2 by Standard & Poors Corporation and with maturities of no more than one year from the date of acquisition or (iii) repurchase agreements covering debt securities or commercial paper of the type
permitted in this Section, certificates of deposit, demand deposits, eurodollar time deposits, overnight bank deposits and bankers acceptances, with maturities of no more than one year from the date of acquisition, issued by or acquired from
or through any Lender or any bank or trust company organized under the laws of the United States of America or any state thereof and having capital surplus and undivided profits aggregating at least $100,000,000, (c) other short-term
Investments similar in nature and degree of risk to those described in clause (b) of this Section 6.8, (d) Investments in money-market funds sponsored or administered by Persons acceptable to the Agent and which funds invest in
short-term Investments similar in nature and degree of risk to those described in clause (b) of this Section 6.8, (e) evidences of loans or advances not prohibited by the provisions of Section 6.7,
(f) Investments in limited partnerships in which the interest of the Borrower therein is subject to a first priority Lien in favor of the Agent to secure the Obligations (including, for the avoidance of doubt, Chase Energy, L.P., a Texas
limited partnership) existing as of December 31, 2009 and additional Investments made thereafter not exceeding $1,000,000 in the aggregate each calendar year when considered together with loans and advances by the Borrower which are the subject
of clause (d) in the proviso appearing in Section 6.7, (g) so long as (i) no Default, Event of Default or Deficiency exists or would result therefrom and after giving effect thereto the Available Commitment equals at least
fifteen percent (15%) of the then existing Commitment Amount, (ii) no portion of the proceeds thereof is used by Prime Offshore L.L.C. to pay principal owing on the Artic Loan and (iii) the principal owing on the Artic Loan does not
exceed $20,000,000, Investments in Prime Offshore LLC or (h) Investments in Subsidiary Guarantors.

6.9 Restricted
Payments. Declare, pay or make, whether in cash or Property, any dividend or distribution on, or purchase redeem or otherwise acquire for value, any of its equity interests; provided, however, that, so long as no Default, Event of
Default or Deficiency exists or would result therefrom, the foregoing restriction shall not apply to (a) dividends paid in common



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equity interests in the Borrower, (b) dividends or distributions made to the Borrower or any of its Domestic Subsidiaries by any of their respective Domestic Subsidiaries or purchases or
redemptions by the Borrower or any of its Domestic Subsidiaries of any equity interests of any of its Domestic Subsidiaries or (c) dividends, distributions or repurchases of its stock by the Borrower of up to $1,000,000 in each calendar year.

6.10 Issuance of Equity; Changes in Corporate Structure. Except for issuances of common shares by the Borrower, issue
or agree to issue any equity interests constituting Indebtedness or any additional common equity interests to Persons other than its current equity owners; enter into any transaction of consolidation, merger or amalgamation; or liquidate, wind up or
dissolve (or suffer any liquidation or dissolution); provided, however, that the foregoing shall not restrict (i) transactions of merger, consolidation or amalgamation among any of the Subsidiary Guarantors or, if the Borrower is
the surviving entity, between the Borrower and any Subsidiary Guarantor or (ii) any liquidation winding up or dissolution of a Subsidiary Guarantor.

6.11 Transactions with Affiliates. Directly or indirectly, enter into any transaction (including the sale, lease or exchange of
Property or the rendering of service) with any of its Affiliates (other than transactions entered into in the normal course of business between the Borrower or a Domestic Subsidiary of the Borrower with another Domestic Subsidiary of the Borrower
not otherwise prohibited hereunder), other than upon fair and reasonable terms no less favorable than could be obtained in an arms length transaction with a Person which was not an Affiliate.

6.12 Lines of Business. Change its principal line of business from that in which it is engaged as of the date hereof.

6.13 Plan Obligation. Assume or otherwise become subject to an obligation to contribute to or maintain any Plan or acquire any
Person which has at any time had an obligation to contribute to or maintain any Plan.

6.14 Current Ratio. Permit the
ratio, determined as of the end of each quarter of each fiscal year of the Borrower, commencing with that ending on June 30, 2010, of Current Assets to Current Liabilities to be less than 1.00 to 1.00.

6.15 Total Indebtedness to EBITDAX Ratio. Permit the ratio, determined as of the end of each quarter of each fiscal year of the
Borrower, commencing with that ending on June 30, 2010, of (a) Indebtedness of the Borrower, on a consolidated basis with its consolidated Subsidiaries, but expressly excluding Prime Offshore LLC, for borrowed money (exclusive, for the
avoidance of doubt, of trade accounts payable and accrued liabilities, net unrealized losses or charges in respect of Commodity Hedge Agreements or Interest Rate Hedge Agreements and the undrawn, unexpired amount of all outstanding Letters of
Credit, if such would otherwise be included) to (b) EBITDAX (but expressly excluding any contribution to EBITDAX as a result of the activities of Prime Offshore LLC) for the preceding four quarterly periods (including that ended on the date of
determination) to be more than 4.00 to 1.00.



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6.16 Interest Coverage Ratio. Permit the ratio, determined as of the end of each
quarter of each fiscal year of the Borrower, commencing with that ending on June 30, 2010, of (a) EBITDAX for the preceding four quarterly periods, including that ended on the date of determination (but expressly excluding any contribution to
EBITDAX as a result of the activities of Prime Offshore LLC), to (b) cash Interest Expense (but expressly excluding cash Interest Expense of Prime Offshore LLC), other than any cost arising from the extinguishment of any Indebtedness prior to
the maturity of such Indebtedness, for the preceding four quarterly periods (including that ended on the date of determination) to be less than 3.00 to 1.00.

6.17 Anti-Terrorism Laws. Conduct any business or engage in any transaction or dealing with any Blocked Person, including the
making or receiving of any contribution of funds, goods or services to or for the benefit of any Blocked Person; deal in, or otherwise engage in any transaction relating to, any Property or interests in Property blocked pursuant to Executive Order
No. 13224; or engage in or conspire to engage in any transaction that evades or avoids, or has the purpose of evading or avoiding, or attempts to violate, (a) any of the prohibitions set forth in Executive Order No. 13224 or the USA
Patriot Act, or (b) any prohibitions set forth in the rules or regulations issued by OFAC or any sanctions against targeted foreign countries, terrorism sponsoring organizations, and international narcotics traffickers based on United States
foreign policy.

6.18 Commodity Hedge Agreements. Assign, terminate or unwind any Commodity Hedge Agreements nor sell
any Commodity Hedge Agreements if the effect of such action (when taken together with any other Commodity Hedge Agreements executed contemporaneously with the taking of such action) would have the effect of reducing the economic value supporting the
Borrowing Base; provided that, notwithstanding the foregoing, the Borrower may assign, terminate or unwind Commodity Hedge Agreements with the effect of reducing the economic value supporting the Borrowing Base if it provides not less than 10
Business Days prior written notice of such intent to the Agent and the Lenders, and concurrently with such notice the Agent, with the approval of the Lenders as required pursuant to Section 9.9, shall have the right to adjust the
Borrowing Base.

6.19 Use of Proceeds and Letters of Credit. Use the proceeds of any Loan or use any Letter of Credit
for a purpose other than one permitted by Section 2.4.

6.20 Certain Gas Contracts. Enter into any contract
containing a take-or-pay or prepayment provision or under any similar agreement to deliver hydrocarbons produced from or allocated to any of the Mortgaged Property or other Oil and Gas Properties owned by it at some future
date without receiving full payment therefor within 90 days of delivery.

ARTICLE VII

EVENTS OF DEFAULT

7.1 Enumeration of Events of Default. Any of the following events shall constitute an Event of Default:

(a) default shall be made in the payment when due of (i) any installment of principal under this Agreement or the
Notes or (ii) in the payment when due of any interest, fee or other sum payable under any Loan Document and such default shall remain unremedied in excess of three days;



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(b) default shall be made by the Borrower or any of the Guarantors in the
due observance or performance of any of its obligations, covenants or agreements under the Loan Documents, and, as to compliance with the obligations, covenants or agreements under Article V (other than Section 5.5 and
Section 5.14), such default shall continue for 30 days after the earlier of notice thereof by the Agent or knowledge thereof by the Borrower or the relevant Guarantors, as the case may be;

(c) any representation or warranty made by or on behalf of the Borrower or any of the Guarantors in any of the Loan
Documents proves to have been untrue in any material respect or any representation, statement (including Financial Statements), certificate or data furnished or made to the Agent or any Lender in connection herewith proves to have been untrue in any
material respect as of the date the facts therein set forth were stated or certified;

(d) default shall be
made by the Borrower or any of the Guarantors (as principal or guarantor or other surety) in the payment or performance of any bond, debenture, note, or other Indebtedness in excess of $500,000 in the aggregate or under any credit agreement, loan
agreement, indenture, promissory note or similar agreement or instrument executed in connection with any of the foregoing, and such default shall remain unremedied for in excess of the period of grace, if any, with respect thereto or there shall
occur any event or condition in respect of any such Indebtedness which would allow the holders thereof to require such Indebtedness to be repaid, repurchased or redeemed;

(e) the levy against any significant portion of the Property of the Borrower or any of the Guarantors of any execution,
garnishment, attachment, sequestration or other writ or similar proceeding in an amount in excess of $500,000 which is not permanently dismissed or discharged within 60 days after the levy;

(f) the Borrower or any of the Guarantors shall (i) apply for or consent to the appointment of a receiver, trustee,
or liquidator of it or all or a substantial part of its assets, (ii) file a voluntary petition commencing an Insolvency Proceeding, (iii) make a general assignment for the benefit of creditors of all or substantially all of its assets,
(iv) be unable, or admit in writing its inability, to pay its debts generally as they become due, or (v) file an answer admitting the material allegations of a petition filed against it in any Insolvency Proceeding;

(g) an order, judgment or decree shall be entered against the Borrower or any of the Guarantors by any court of competent
jurisdiction or by any other duly authorized authority, on the petition of a creditor or otherwise, granting relief in any Insolvency Proceeding or approving a petition seeking reorganization or an arrangement of its debts or appointing a receiver,
trustee, conservator, custodian, or liquidator of it or all or any substantial part of its assets, and such order, judgment, or decree shall not be dismissed or stayed within 60 days;



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(h) a final and non-appealable order, judgment or decree shall be entered
against the Borrower or any of the Guarantors for money damages and/or Indebtedness due in an amount in excess of $500,000, and such order, judgment or decree shall not be dismissed or stayed within 60 days or is not fully covered by insurance;

(i) any charges are filed or any other action or proceeding is instituted by any Governmental Authority
against the Borrower or any of the Guarantors under the Racketeering Influence and Corrupt Organizations Statute (18 U.S.C. §1961 et seq.), the result of which could be the forfeiture or transfer of any material Property of the
Borrower or any of the Guarantors subject to a Lien in favor of the Agent without (i) satisfaction or provision for satisfaction of such Lien or (ii) such forfeiture or transfer of such Property being expressly made subject to such Lien;

(j) the Borrower or any of the Guarantors shall have (i) concealed, removed or diverted, or permitted to
be concealed, removed or diverted, any part of its Property, with intent to hinder, delay or defraud its creditors or any of them, (ii) made or suffered a transfer of any of its Property which is fraudulent under any bankruptcy, fraudulent
conveyance, or similar law with intent to hinder, delay or defraud its creditors, (iii) made any transfer of its Property to or for the benefit of a creditor at a time when other creditors similarly situated have not been paid with intent to
hinder, delay or defraud its creditors, or (iv) shall have suffered or permitted, while insolvent, any creditor to obtain a Lien upon any of its Property through legal proceedings or distraint which is not vacated within 60 days from the date
thereof;

(k) any Security Document shall for any reason not, or cease to, create valid and perfected first
priority Liens (subject only to Permitted Liens) against the Collateral purportedly covered thereby, except to the extent permitted by this Agreement or cured or corrected on or before the tenth day after notice thereof to the Borrower or the
Borrower otherwise becoming aware thereof;

(l) a Change in Control shall occur;

(m) the Borrower shall cease to be the sole shareholder of each of the Subsidiary Guarantors;

(n) the Borrower or any of the Guarantors contests in any manner the validity or enforceability of any provision of any
Loan Document, or denies that it has any liability under any Loan Document;

(o) the Borrower or any of the
Guarantors purports to revoke, terminate or rescind any Loan Document or any provision of any Loan Document; or

(p) a Material Adverse Effect shall occur.

7.2 Remedies. (a) Upon the occurrence of an Event of Default specified in Section 7.1(f) or
Section 7.1(g), immediately and without notice, (i) all Obligations under the Loan Documents shall automatically become immediately due and payable, without presentment, demand, protest, notice of protest, default, or dishonor,
notice of intent to accelerate maturity, notice of acceleration of maturity, or other notice of any kind, except as may be provided to the contrary elsewhere herein, all of which are hereby expressly waived by the Borrower and the Guarantors and
(ii) the Commitments shall immediately cease and terminate unless and until reinstated by the Agent and the Lenders in writing.



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(b) Upon the occurrence of any Event of Default other than those specified
in Section 7.1(f) or Section 7.1(g), (i) the Agent may and, upon the request of the Required Lenders, shall, by notice in writing to the Borrower, declare all Obligations under the Loan Documents immediately due and
payable, without presentment, demand, protest, notice of protest, default, or dishonor, notice of intent to accelerate maturity, notice of acceleration of maturity, or other notice of any kind, except as may be provided to the contrary elsewhere
herein, all of which are hereby expressly waived by the Borrower and the Guarantors and (ii) the Agent may and, upon the request of the Required Lenders, shall declare the Commitments terminated, whereupon the Commitments shall immediately
cease and terminate unless and until reinstated by the Agent and the Lenders in writing.

(c) Upon the
occurrence of any Event of Default, the Agent may, in addition to the foregoing in this Section 7.2, exercise any or all of the rights and remedies provided by law or pursuant to the Loan Documents.

(d) Should the Obligations under the Loan Documents become immediately due and payable in accordance with any of the
preceding subsections of this Section 7.2, the obligation of the Borrower with respect to the L/C Exposure shall be to provide cash as Collateral therefor, to be held and administered by the Agent as provided in
Section 2.11(a) with respect to mandatory prepayments and, failing receipt by the Agent of immediate payment in full of the Loan Balance, any additional Obligations then due and payable, and all accrued and unpaid interest and fees and
such cash to serve as Collateral for the L/C Exposure, the Agent shall be entitled to proceed against the Collateral, and proceeds from any realization against any such Collateral, other than cash, in excess of the sum of the costs of such
realization, the Loan Balance, any additional Obligations then due and payable, and accrued and unpaid interest and fees shall constitute cash Collateral for the remaining L/C Exposure, if any, to be held and administered by the Agent as provided in
Section 2.11(a).

(e) Proceeds from realization against the Collateral and any other funds received
by the Agent from the Borrower or any of the Guarantors when an Event of Default has occurred and is continuing shall be applied (i) first, to fees and expenses due pursuant to the terms of this Agreement, any other Loan Document or any
Commodity Hedge Agreement or Interest Rate Hedge Agreement with an Approved Hedge Counterparty, (ii) second, to accrued interest on the Obligations under the Loan Documents or any Commodity Hedge Agreement or Interest Rate Hedge Agreement with
a Lender Hedge Counterparty, (iii) third, to the Loan Balance, in any manner elected by the Agent (with the consent of the Required Lenders), and any other Obligations then due and payable, pro rata in accordance with the ratio of the Loan
Balance or such other Obligations, as the case may be, to the sum of the Loan Balance and such other Obligations and (iv) as provided in subsection (d) immediately above, if applicable



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ARTICLE VIII

THE AGENT

8.1 Appointment. Each Lender hereby designates and appoints the Agent as the agent of such Lender under this Agreement and the
other Loan Documents. Each Lender authorizes the Agent, as the agent for such Lender, to take such action on behalf of such Lender under the provisions of this Agreement and the other Loan Documents and to exercise such powers and perform such
duties as are expressly delegated to the Agent by the terms of this Agreement and the other Loan Documents, together with such other powers as are reasonably incidental thereto. Notwithstanding any provision to the contrary elsewhere in this
Agreement or in any other Loan Document, the Agent shall not have any duties or responsibilities except those expressly set forth herein or in any other Loan Document or any fiduciary relationship with any Lender; and no implied covenants,
functions, responsibilities, duties, obligations, or liabilities on the part of the Agent shall be read into this Agreement or any other Loan Document or otherwise exist against the Agent.

8.2 Delegation of Duties. The Agent may execute any of its duties under this Agreement and the other Loan Documents by or through
agents or attorneys-in-fact and shall be entitled to advice of counsel concerning all matters pertaining to such duties. The Agent shall not be responsible to any Lender for the negligence or misconduct of any agents or attorneys-in-fact selected by
it with reasonable care.

8.3 Exculpatory Provisions. Neither the Agent nor any of its officers, directors, employees,
agents, attorneys-in-fact or affiliates shall be (a) required to initiate or conduct any litigation or collection proceedings hereunder, except with the contribution by each Lender of its Percentage Share of costs reasonably expected by the
Agent to be incurred in connection therewith, (b) liable for any action lawfully taken or omitted to be taken by it or such Person under or in connection with this Agreement or any other Loan Document (except for gross negligence or willful
misconduct of the Agent or such Person) or (c) responsible in any manner to any Lender or any other Lender Hedge Counterparty for any recitals, statements, representations or warranties made by the Borrower or any of the Guarantors or any
officer or representative thereof contained in this Agreement or any other Loan Document or in any certificate, report, statement or other document referred to or provided for in, or received by the Agent under or in connection with, this Agreement
or any other Loan Document, or for the value, validity, effectiveness, genuineness, enforceability or sufficiency of this Agreement or any other Loan Document or for any failure of the Borrower or any of the Guarantors to perform its obligations
hereunder or thereunder. The Agent shall not be under any obligation to any Lender or any other Lender Hedge Counterparty to ascertain or to inquire as to the observance or performance of any of the agreements contained in, or conditions of, this
Agreement or any other Loan Document, or to inspect the properties, books or records of the Borrower or any of the Guarantors.

8.4 Reliance by Agent. The Agent shall be entitled to rely, and shall be fully protected in relying, upon any Note, writing,
resolution, notice, consent, certificate, affidavit, letter, cablegram, telegram, telecopy, telex or teletype message, statement, order or other document or conversation believed by it to be genuine and correct and to have been signed, sent



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or made by the proper Person or Persons and upon advice and statements of legal counsel (including counsel to the Borrower or any of the Guarantors), independent accountants and other experts
selected by the Agent. The Agent may deem and treat the payee of any Note as the owner thereof for all purposes unless and until a written notice of assignment, negotiation, or transfer thereof shall have been received by the Agent. The Agent shall
be fully justified in failing or refusing to take any action under this Agreement or any other Loan Document unless it shall first receive such advice or concurrence of the Required Lenders as it deems appropriate and contribution by each Lender of
its Percentage Share of costs reasonably expected by the Agent to be incurred in connection therewith. The Agent shall in all cases be fully protected in acting, or in refraining from acting, under this Agreement and the other Loan Documents in
accordance with a request of the Required Lenders. Such request and any action taken or failure to act pursuant thereto shall be binding upon the Lenders and all future holders of the Notes. In no event shall the Agent be required to take any action
that exposes the Agent to personal liability or that is contrary to any Loan Document or applicable Requirement of Law.

8.5
Notice of Default. The Agent shall not be deemed to have knowledge or notice of the occurrence of any Default or Event of Default unless the Agent has received notice from a Lender, the Borrower or any of the Guarantors referring to this
Agreement, describing such Default or Event of Default and stating that such notice is a notice of default. In the event that the Agent receives such a notice, the Agent shall promptly give notice thereof to the Lenders. The Agent shall
take such action with respect to such Default or Event of Default as shall be reasonably directed by the Required Lenders; provided that unless and until the Agent shall have received such directions, subject to the provisions of
Section 7.2, the Agent may (but shall not be obligated to) take such action, or refrain from taking such action, with respect to such Default or Event of Default as it shall deem advisable in the best interests of the Lenders. In the
event that the officer of the Agent primarily responsible for the lending relationship with the Borrower or the officer of any Lender primarily responsible for the lending relationship with the Borrower becomes aware that a Default or Event of
Default has occurred and is continuing, the Agent or such Lender, as the case may be, shall use its good faith efforts to inform the other Lenders and/or the Agent, as the case may be, promptly of such occurrence. Notwithstanding the preceding
sentence, failure to comply with the preceding sentence shall not result in any liability to the Agent or any Lender.

8.6
Non-Reliance on Agent and Other Lenders. Each Lender expressly acknowledges that neither the Agent nor any other Lender nor any of their respective officers, directors, employees, agents, attorneys-in-fact or affiliates has made any
representation or warranty to such Lender and that no act by the Agent or any other Lender hereafter taken, including any review of the affairs of the Borrower or any of the Guarantors, shall be deemed to constitute any representation or warranty by
the Agent or any Lender to any other Lender. Each Lender represents to the Agent that it has, independently and without reliance upon the Agent or any other Lender, and based on such documents and information as it has deemed appropriate, made its
own appraisal of and investigation into the business, operations, property, condition (financial and otherwise) and creditworthiness of the Borrower and the value of the Collateral and other Properties of the Borrower or any other Person and has
made its own decision to enter into this Agreement. Each Lender also represents that it will, independently and without reliance upon the Agent or any other Lender and based on such documents and information as it shall deem appropriate at the time,
continue to make its own credit analysis, appraisals and decisions in



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taking or not taking action under this Agreement and the other Loan Documents, and to make such investigation as it deems necessary to inform itself as to the business, operations, property,
condition (financial and otherwise) and creditworthiness of the Borrower and the value of the Collateral and other Properties of the Borrower or any other Person. Except for notices, reports and other documents expressly required to be furnished to
the Lenders by the Agent hereunder, the Agent shall not have any duty or responsibility to provide any Lender with any credit or other information concerning the business, operations, property, condition (financial and otherwise), or
creditworthiness of the Borrower or the value of the Collateral or other Properties of the Borrower or any other Person which may come into the possession of the Agent or any of its officers, directors, employees, agents, attorneys-in-fact or
affiliates.

8.7 Indemnification. EACH LENDER AGREES TO
INDEMNIFY THE AGENT, IN ITS CAPACITY AS AGENT, AND ITS OFFICERS,
DIRECTORS, EMPLOYEES, AGENTS, ATTORNEYS-IN-FACT AND AFFILIATES (TO THE EXTENT
NOT REIMBURSED BY THE BORROWER AND WITHOUT LIMITING THE OBLIGATION OF
THE BORROWER TO DO SO), RATABLY ACCORDING TO THE PERCENTAGE SHARE OF
SUCH LENDER, FROM AND AGAINST ANY AND ALL LIABILITIES, CLAIMS, OBLIGATIONS,
LOSSES, DAMAGES, PENALTIES, ACTIONS, JUDGMENTS, SUITS, COSTS, EXPENSES AND DISBURSEMENTS
OF ANY KIND WHATSOEVER WHICH MAY AT ANY TIME (INCLUDING ANY TIME
FOLLOWING THE PAYMENT AND PERFORMANCE OF ALL OBLIGATIONS AND THE TERMINATION
OF THIS AGREEMENT) BE IMPOSED ON, INCURRED BY OR ASSERTED AGAINST THE
AGENT, IN ITS CAPACITY AS AGENT, OR ANY OF ITS OFFICERS, DIRECTORS,
EMPLOYEES, AGENTS, ATTORNEYS-IN-FACT OR AFFILIATES IN ANY WAY RELATING
TO OR ARISING OUT OF THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT,
OR ANY OTHER DOCUMENT CONTEMPLATED OR REFERRED TO HEREIN OR THE
TRANSACTIONS CONTEMPLATED HEREBY OR ANY ACTION TAKEN OR OMITTED BY THE
AGENT, IN ITS CAPACITY AS AGENT, OR ANY OF ITS OFFICERS, DIRECTORS,
EMPLOYEES, AGENTS, ATTORNEYS-IN-FACT OR AFFILIATES UNDER OR IN CONNECTION
WITH ANY OF THE FOREGOING, INCLUDING ANY LIABILITIES, CLAIMS, OBLIGATIONS, LOSSES,
DAMAGES, PENALTIES, ACTIONS, JUDGMENTS, SUITS, COSTS, EXPENSES AND DISBURSEMENTS IMPOSED,
INCURRED OR ASSERTED AS A RESULT OF THE NEGLIGENCE, WHETHER SOLE OR
CONCURRENT, OF THE AGENT, IN ITS CAPACITY AS AGENT, OR ANY OF
ITS OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, ATTORNEYS-IN-FACT OR AFFILIATES;providedTHAT NO LENDER SHALL BE LIABLE FOR THE PAYMENT OF ANY PORTION
OF SUCH LIABILITIES, OBLIGATIONS, LOSSES, DAMAGES, PENALTIES, ACTIONS, JUDGMENTS, SUITS,
COSTS, EXPENSES OR DISBURSEMENTS RESULTING SOLELY FROM THE GROSS NEGLIGENCE OR
WILLFUL MISCONDUCT OF THE AGENT, IN ITS CAPACITY AS AGENT, OR ANY
OF ITS OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, ATTORNEYS-IN-FACT OR AFFILIATES.
THE AGREEMENTS IN THISSection 8.7SHALL SURVIVE THE PAYMENT AND PERFORMANCE
OF ALL OBLIGATIONS AND THE TERMINATION OF THIS AGREEMENT.

8.8 Restitution. Should the right of the Agent or any Lender to realize funds with respect to the Obligations be challenged and
any application of such funds to the Obligations be reversed, whether by Governmental Authority or otherwise, or should the Borrower otherwise be entitled to a refund or return of funds distributed to the Lenders in connection with the Obligations,
the Agent or such Lender, as the case may be, shall promptly notify the Lenders of such fact. Not later than noon, Central Standard or Central Daylight Savings Time, as the case may be, of the Business Day following such notice, each Lender shall
pay to the Agent an amount equal to the ratable share of such Lender of the funds required to be returned to the



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Borrower. The ratable share of each Lender shall be determined on the basis of the percentage of the payment all or a portion of which is required to be refunded originally distributed to such
Lender, if such percentage can be determined, or, if such percentage cannot be determined, on the basis of the Percentage Share of such Lender. The Agent shall forward such funds to the Borrower or to the Lender required to return such funds. If any
such amount due to the Agent is made available by any Lender after Noon, Central Standard or Central Daylight Savings Time, as the case may be, of the Business Day following such notice, such Lender shall pay to the Agent (or the Lender required to
return funds to the Borrower, as the case may be) for its own account interest on such amount at a rate equal to the Federal Funds Rate for the period from and including the date on which restitution to the Borrower is made by the Agent (or the
Lender required to return funds to the Borrower, as the case may be,) to, but not including, the date on which such Lender failing to timely forward its share of funds required to be returned to the Borrower shall have made its ratable share of such
funds available.

8.9 Agent in Its Individual Capacity. The Agent and its Affiliates may make loans to, accept deposits
from, and generally engage in any kind of business with the Borrower as though the Agent were not the agent hereunder. With respect to any Note issued to the Lender serving as the Agent, the Agent shall have the same rights and powers under this
Agreement as a Lender and may exercise such rights and powers as though it were not the Agent. The terms Lender and Lenders shall include the Agent in its individual capacity.

8.10 Successor Agent. The Agent may resign as Agent upon ten days notice to the Lenders and the Borrower. If the Agent shall
resign as Agent under this Agreement and the other Loan Documents, Lenders (other than the Agent in its capacity as a Lender) for which the Percentage Shares aggregate at least fifty-one percent (51%) of the Percentage Shares of all Lenders
(other than the Agent in its capacity as a Lender) shall appoint from among the Lenders a successor agent for the Lenders and the Lender Hedge Counterparties, whereupon such successor agent shall succeed to the rights, powers and duties of the
Agent; provided, however, should the Agent resign at a point when all Loans, accrued interest and fees hereunder have been paid in full and the Commitments have terminated, resulting in the only then existing Obligations being the
liability of the Borrower under Commodity Hedge Agreements and/or Interest Rate Hedge Agreements with Lender Hedge Counterparties other than Lenders, the successor agent shall be selected from among such Lender Hedge Counterparties by majority vote
of such Lender Hedge Counterparties. The term Agent shall mean such successor agent effective upon its appointment. The rights, powers, and duties of the former Agent as Agent shall be terminated, without any other or further act or deed
on the part of such former Agent or any of the parties to this Agreement or any holders of the Notes. After the removal or resignation of any Agent hereunder as Agent, the provisions of this Article VIII and those of any Section hereof
relating to the Agent, including Section 5.16, Section 5.17, Section 5.21 and Section 5.22 shall inure to its benefit as to any actions taken or omitted to be taken by it while it was Agent under this
Agreement and the other Loan Documents.

8.11 Applicable Parties. The provisions of this Article are solely for the
benefit of the Agent and the Lenders, and neither the Borrower nor any Guarantor shall have any rights as a third party beneficiary or otherwise under any of the provisions of this Article. In performing functions and duties hereunder and under the
other Loan Documents, the Agent shall act solely as the agent of the Lenders and does not assume, nor shall it be deemed to have assumed, any obligation or relationship of trust or agency with or for the Borrower or any of the Guarantors or any
legal representative, successor or assign of any such Person.



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8.12 Releases. Each Lender hereby authorizes the Agent to release any Collateral that
is permitted to be sold or released pursuant to the terms of the Loan Documents. Each Lender hereby authorizes the Agent to execute and deliver to the Borrower, at the Borrowers sole cost and expense, any and all releases of Liens, termination
statements, assignments or other documents reasonably requested by the Borrower in connection with any sale or other disposition of Property or any Domestic Subsidiary of the Borrower to the extent such sale or other disposition is permitted by the
terms of the Loan Documents.

ARTICLE IX

MISCELLANEOUS

9.1 Assignments; Participations. (a) Neither the Borrower nor any of the Guarantors may assign any of its rights or delegate
any of its obligations under any Loan Document without the prior consent of the Agent and the Lenders.

(b)
With the consent of the Agent and, except when a Default or an Event of Default shall have occurred and is continuing, the Borrower (which shall not be unreasonably withheld or delayed in either case), any Lender may assign to one or more assignees,
other than the Borrower, any other Person liable for payment of the Obligations or any Affiliate of the Borrower or any such other Person, all or a portion of its rights and obligations under this Agreement pursuant to an Assignment Agreement;
provided, however, (i) such consents shall not be required with respect to an assignment from one Lender to one or more other Lenders or Affiliates of Lenders, (ii) the consent of the Borrower shall not be required with
respect to an assignment from a Lender to one or more Approved Funds or Affiliates of Approved Funds and (iii) any such assignment shall be in the amount of at least $5,000,000 (or any whole multiple of $1,000,000 in excess thereof), unless the
relevant assignment is to an Affiliate of the assigning Lender or is an assignment of the entire Commitment of the assigning Lender. The assignee shall pay to the Agent a transfer fee in the amount of $3,500 for each such assignment. Any such
assignment shall become effective upon the execution and delivery to the Agent of an Assignment Agreement and, if required, the consent of the Agent and the Borrower. Promptly following receipt of an executed Assignment Agreement, the Agent shall
send to the Borrower a copy of such executed Assignment Agreement. Promptly following receipt of such executed Assignment Agreement, the Borrower shall execute and deliver, at its own expense, a new Note to the assignee, if such assignee is not then
a Lender. Upon the effectiveness of any assignment pursuant to this Section 9.1(b), the assignee will become a Lender, if not already a Lender, for all purposes of the Loan Documents, and the assignor shall be
relieved of its obligations hereunder to the extent of such assignment. If the assignor no longer holds any rights or obligations under this Agreement, such assignor shall cease to be a Lender hereunder, except that its rights under
Section 5.17, Section 5.21 and Section 5.22, shall not be affected. On the last Business Day of each month during which an assignment has become effective pursuant to this Section 9.1(b) or sooner
following an assignment, the Agent shall prepare a new Exhibit IV giving effect to all such assignments effected during such month or any relevant assignment, as the case may be, and will promptly provide a copy thereof to the Borrower and
each Lender.



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(c) Each Lender may transfer, grant or assign participations in all or any
portion of its interests hereunder to any Person pursuant to this Section 9.1(c), provided that such Lender shall remain a Lender for all purposes of this Agreement and the transferee of such participation shall not
constitute a Lender hereunder. In the case of any such participation, the participant shall not have any rights under any Loan Document, the rights of the participant in respect of such participation to be against the granting Lender as
set forth in the agreement with such Lender creating such participation, and all amounts payable by the Borrower hereunder shall be determined as if such Lender had not sold such participation. Each agreement creating a participation must include an
agreement by the participant to be bound by the provisions of Section 8.3, Section 8.6 and Section 8.7.

(d) The Lenders may furnish any information concerning the Borrower or any of the Guarantors in the possession of the
Lenders from time to time to assignees and participants and prospective assignees and participants.

(e)
Notwithstanding anything in this Section 9.1 to the contrary, any Lender may assign and pledge all or any of its Notes or any interest therein to any Federal Reserve Bank or the United States Treasury as collateral security pursuant to
Regulation A of the Board of Governors of the Federal Reserve System and any operating circular issued by such Federal Reserve System and/or such Federal Reserve Bank. No such assignment or pledge shall release the assigning or pledging Lender from
its obligations hereunder.

(f) Notwithstanding any other provisions of this Section, no transfer or assignment
of the interests or obligations of any Lender or grant of participations therein shall be permitted if such transfer, assignment, or grant would require the Borrower to file a registration statement with the Securities and Exchange Commission or any
successor Governmental Authority or qualify the Loans under the Blue Sky laws of any state.

9.2 Survival of
Representations, Warranties, and Covenants. All representations and warranties of the Borrower and the Guarantors and all covenants and agreements of the Borrower and the Guarantors herein made shall survive the execution and delivery of the
Notes and the Security Documents and shall remain in force and effect so long as any Obligation is outstanding or any Commitment exists.



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9.3 Notices and Other Communications. Except as to oral notices expressly authorized
herein, which oral notices shall be confirmed in writing, all notices, requests, and communications hereunder shall be in writing (including by facsimile, electronic mail or other electronic form). Unless otherwise expressly provided herein, any
such notice, request, demand, or other communication shall be deemed to have been duly given or made when delivered by hand, or, in the case of delivery by mail, five days after being deposited in the mail, certified mail, return receipt requested,
postage prepaid, or, in the case of facsimile notice, when receipt thereof is acknowledged orally or by written confirmation report, addressed as follows:

(a) if to the Agent, to:

Compass Bank

24 Greenway Plaza, Suite 1400A

Houston, Texas 77046

Attention: Kathleen J. Bowen

Facsimile: (713) 499-8722

and by facsimile to:

Attention: Kenneth R. Lisenbe

Facsimile: (205) 524-9604

(b) if to any Lender, to the address, including facsimile number, of such Lender reflected on Exhibit IV or any
replacement thereof.

(c) if to the Borrower or any of the Guarantors, to:

One Landmark Square

Stamford, Connecticut 06901

Attention: Beverly A. Cummings

Facsimile: (203) 358-5786

Any party may, by proper written notice hereunder to the others, change the individuals or addresses to which such notices to it shall thereafter be
sent.

9.4 Parties in Interest. Subject to the restrictions on changes in structure set forth in
Section 6.10 and other applicable restrictions contained herein, all covenants and agreements herein contained by or on behalf of the Borrower, any of the other Guarantors, the Agent or the Lenders shall be binding upon and inure to the
benefit of the Borrower, any of the other Guarantors, the Agent or the Lenders, as the case may be, and their respective legal representatives, successors, and permitted assigns.

9.5 Renewals; Extensions. All provisions of this Agreement relating to the Notes shall apply with equal force and effect to each
promissory note hereafter executed which in whole or in part represents a renewal or extension of any part of the Indebtedness of the Borrower under this Agreement, the Notes, or any other Loan Document.

9.6 Rights of Third Parties. All provisions herein are imposed solely and exclusively for the benefit of the Agent, the Lenders,
any other Approved Hedge Counterparties, the Borrower and the Guarantors. No other Person shall have any right, benefit, priority, or interest hereunder or as a result hereof or have standing to require satisfaction of provisions hereof in
accordance with their terms.

9.7 No Waiver; Rights Cumulative. No course of dealing on the part of the Agent or the
Lenders or their officers or employees, nor any failure or delay by the Agent or the Lenders with respect to exercising any of their rights under any Loan Document shall operate as a waiver thereof. The rights of the Agent and the Lenders under the
Loan Documents shall be cumulative



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and the exercise or partial exercise of any such right shall not preclude the exercise of any other right. Neither the making of any Loan nor the issuance of any Letter of Credit shall constitute
a waiver of any of the covenants, warranties, or conditions of the Borrower contained herein. In the event the Borrower is unable to satisfy any such covenant, warranty, or condition, neither the making of any Loan nor the issuance of any Letter of
Credit shall have the effect of precluding the Agent or the Lenders from thereafter declaring such inability to be an Event of Default as hereinabove provided.

9.8 Survival Upon Unenforceability. In the event any one or more of the provisions contained in any of the Loan Documents or in
any other instrument referred to herein or executed in connection with the Obligations shall, for any reason, be held to be invalid, illegal, or unenforceable in any respect, such invalidity, illegality, or unenforceability shall not affect any
other provision of any Loan Document or of any other instrument referred to herein or executed in connection with such Obligations.

9.9 Amendments; Waivers. Neither this Agreement nor any provision hereof may be amended, waived, discharged or terminated orally,
but only by an instrument in writing signed by the party against whom enforcement of the amendment, waiver, discharge or termination is sought. Subject to the preceding sentence, any provision of this Agreement or any other Loan Document may be
amended, modified or waived by the Borrower, the Guarantors and the Required Lenders; provided that, notwithstanding any provision of this Agreement to the contrary, (a) no amendment, modification or waiver which extends the final
maturity of the Loans, increases the Commitment Amount, increases the Borrowing Base or reduces the Monthly Reduction Amount, forgives the principal amount of any Indebtedness of the Borrower outstanding under this Agreement or interest thereon or
fees owing under this Agreement, releases any Guarantor of such Indebtedness, releases all or substantially all of the Collateral or any Collateral which is the subject of a disposition prohibited by the provisions of Section 6.4,
reduces the interest rate applicable to the Loans or the fees payable to the Lenders generally, affects Section 2.1, Section 2.2, Section 2.9, Section 2.10, Section 7.2(e) or this
Section 9.9, modifies the definition of Required Lenders or postpones the date of payment of any amount due as a result of the Monthly Reduction Amount or any fee payable hereunder shall be effective without the consent of
the Agent and all of the Lenders; (b) no affirmation or reduction of the Borrowing Base or affirmation or increase of the Monthly Reduction Amount shall be effective without the consent of the Agent and the Required Lenders; (c) no
amendment of the Fee Letter shall be effective without the consent of the Borrower and BBVA Compass; (d) no amendment, modification or waiver which increases the Facility Amount or the Percentage Share of any Lender shall be effective without
the consent of such Lender; and (e) no amendment, modification or waiver which modifies the rights, duties or obligations of the Agent shall be effective without the consent of the Agent.

9.10 Controlling Agreement. In the event of a conflict between the provisions of this Agreement and those of any other Loan
Document, the provisions of this Agreement shall control.

9.11 Disposition of Collateral. Notwithstanding any term or
provision, express or implied, in any of the Security Documents, but subject to applicable provisions of this Agreement, the realization, liquidation, foreclosure or any other disposition on or of any or all of



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the Collateral shall be in the order and manner and determined in the sole discretion of the Agent; provided, however, that in no event shall the Agent violate applicable law or exercise rights
and remedies other than those provided in such Security Documents or otherwise existing at law or in equity.

9.12
Governing Law. THIS AGREEMENT AND THE NOTES SHALL BE DEEMED TO BE
CONTRACTS MADE UNDER AND SHALL BE CONSTRUED IN ACCORDANCE WITH AND
GOVERNED BY THE LAWS OF THE STATE OF TEXAS, WITHOUT GIVING EFFECT
TO PRINCIPLES THEREOF RELATING TO CONFLICTS OF LAW.

9.13 Waiver of Right to Jury Trial. EACH OF THE PARTIES
HERETO HEREBY KNOWINGLY, VOLUNTARILY, INTENTIONALLY, IRREVOCABLY AND UNCONDITIONALLY WAIVES ALL
RIGHTS TO TRIAL BY JURY IN ANY ACTION, SUIT, PROCEEDING, COUNTERCLAIM
OR OTHER LITIGATION THAT RELATES TO OR ARISES OUT OF THIS AGREEMENT
OR ANY OTHER LOAN DOCUMENT OR THE ACTS OR OMISSIONS OF THE
AGENT OR ANY LENDER IN THE ENFORCEMENT OF ANY OF THE TERMS
OR PROVISIONS OF THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT OR
OTHERWISE WITH RESPECT THERETO. THE PROVISIONS OF THIS SECTION 9.13 ARE
A MATERIAL INDUCEMENT FOR THE AGENT AND EACH OF THE LENDERS TO
ENTER INTO THIS AGREEMENT.

9.14 Waiver of Class
Action. THE BORROWER AND EACH OF THE GUARANTORS WAIVES THE RIGHT TO
LITIGATE ANY CLAIM, DISPUTE OR CONTROVERSY WITH RESPECT TO THIS AGREEMENT
OR ANY OTHER LOAN DOCUMENT AS A CLASS ACTION, EITHER AS A
MEMBER OF A CLASS OR AS A REPRESENTATIVE, OR TO ACT AS
A PRIVATE ATTORNEY GENERAL.

9.15 Jurisdiction and
Venue. ALL ACTIONS OR PROCEEDINGS WITH RESPECT TO, ARISING DIRECTLY OR
INDIRECTLY IN CONNECTION WITH, OUT OF, RELATED TO OR FROM THIS
AGREEMENT OR ANY OTHER LOAN DOCUMENT MAY BE LITIGATED, AT THE SOLE
DISCRETION AND ELECTION OF THE AGENT, IN COURTS HAVING SITUS IN
HOUSTON, HARRIS COUNTY, TEXAS. IN SUCH REGARD, THE BORROWER AND EACH
OF THE GUARANTORS HEREBY SUBMITS TO THE JURISDICTION OF ANY LOCAL,
STATE OR FEDERAL COURT LOCATED IN HOUSTON, HARRIS COUNTY, TEXAS, AND
HEREBY WAIVES ANY RIGHTS IT MAY HAVE TO TRANSFER OR CHANGE THE
JURISDICTION OR VENUE OF ANY LITIGATION BROUGHT AGAINST IT BY THE
AGENT OR ANY LENDER IN ACCORDANCE WITH THIS SECTION 9.15.

9.16 Integration. THIS AGREEMENT AND THE OTHER
LOAN DOCUMENTS CONSTITUTE THE ENTIRE AGREEMENT AMONG THE PARTIES HERETO AND
THERETO WITH RESPECT TO THE SUBJECT HEREOF AND THEREOF AND SHALL
SUPERSEDE ANY PRIOR AGREEMENT AMONG THE PARTIES HERETO AND THERETO, WHETHER
WRITTEN OR ORAL, RELATING TO THE SUBJECT HEREOF AND THEREOF, INCLUDING
ANY ENGAGEMENT LETTER, COMMITMENT LETTER OR TERM SHEET PROVIDED TO THE
BORROWER BY BBVA COMPASS, THE AGENT OR ANY LENDER. FURTHERMORE, IN THIS
REGARD, THIS AGREEMENT AND THE OTHER WRITTEN LOAN DOCUMENTS REPRESENT, COLLECTIVELY,
THE FINAL AGREEMENT AMONG THE PARTIES THERETO AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF
SUCH PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG SUCH PARTIES.



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9.17 Waiver of Punitive and Consequential Damages. EACH
OF THE BORROWER, THE GUARANTORS, THE AGENT AND THE LENDERS HEREBY
KNOWINGLY, VOLUNTARILY, INTENTIONALLY AND IRREVOCABLY (A) WAIVES, TO THE MAXIMUM
EXTENT IT MAY LAWFULLY AND EFFECTIVELY DO SO, ANY RIGHT IT MAY
HAVE TO CLAIM OR RECOVER, IN ANY DISPUTE BASED HEREON, OR DIRECTLY
OR INDIRECTLY AT ANY TIME ARISING OUT OF, UNDER OR IN CONNECTION
WITH THE LOAN DOCUMENTS OR ANY TRANSACTION CONTEMPLATED THEREBY OR ASSOCIATED
THEREWITH, BEFORE OR AFTER MATURITY, ANY SPECIAL, EXEMPLARY, PUNITIVE OR
CONSEQUENTIAL DAMAGES, OR DAMAGES OTHER THAN, OR IN ADDITION TO, ACTUAL
DAMAGES AND (B) ACKNOWLEDGES THAT IT HAS BEEN INDUCED TO ENTER
INTO THIS AGREEMENT, THE OTHER LOAN DOCUMENTS AND THE TRANSACTIONS CONTEMPLATED
HEREBY AND THEREBY BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND
CERTIFICATIONS CONTAINED IN THIS SECTION 9.17.

9.18 Counterparts. For the convenience of the parties, this Agreement may be executed in multiple counterparts and by different
parties hereto in separate counterparts, each of which for all purposes shall be deemed to be an original, and all such counterparts shall together constitute but one and the same Agreement and shall be enforceable as of the date hereof upon the
execution of one or more counterparts hereof by each of the parties hereto. In this regard, each of the parties hereto acknowledges that a counterpart of this Agreement containing a set of counterpart execution pages reflecting the execution of each
party hereto shall be sufficient to reflect the execution of this Agreement by each party hereto and shall constitute one instrument.

9.19 USA Patriot Act Notice. Each Lender and the Agent (for itself and not on behalf of any Lender) hereby notifies the Borrower
that, pursuant to the requirements of the USA Patriot Act, it is required to obtain, verify and record information that identifies the Borrower, which information includes the name and address of the Borrower and other information that will allow
such Lender or the Agent, as applicable, to identify the Borrower in accordance with the USA Patriot Act.

9.20 Tax Shelter
Regulations. The Borrower does not intend to treat the Loans and related transactions hereunder and under the other Loan Documents as a reportable transaction (within the meanings under current Treasury Regulation
Section 1.6011-4 and Proposed Treasury Regulation Section 1.6011-4, promulgated on November 1, 2006). In the event the Borrower determines to take any action inconsistent with the foregoing statement, it will promptly notify the Agent
thereof. If the Borrower so notifies the Agent, the Borrower acknowledges that one or more of the Lenders may treat its Loans and related transactions hereunder and under the other Loan Documents as part of a transaction that is subject to current
Treasury Regulation Section 301.6112-1 or Proposed Treasury Regulation Section 301.6112-1, promulgated on November 1, 2006, and, in such case, such Lender or Lenders, as applicable, will maintain the lists and other records required,
if any, by such Treasury Regulations.

9.21 Contribution and Indemnification. In the event that any Guarantor pays
(whether through direct payments or as a result of providing Collateral for the Obligations) any amounts on the Obligations in excess of such Guarantors Obtained Benefit (the Excess Payments), such Guarantor shall be
entitled to make demand on the Borrower for such Excess Payments, and, to the extent not recovered from the Borrower, to receive from each other Guarantor that received an Obtained Benefit, such Guarantors Contribution Percentage of the Excess
Payment.



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If any party obligated to make such a payment is unable to pay the Contribution Percentage of the Excess Payment, each Guarantor agrees to make a contribution to the party entitled to such
payment to the extent necessary so that each Guarantor shares equally the liability for such Excess Payment in relation to the relative Obtained Benefit received by such Guarantor. IN SUCH REGARD,
TO THE MAXIMUM EXTENT PERMITTED BY LAW, EACH GUARANTOR SHALL INDEMNIFY,
DEFEND AND HOLD HARMLESS THE OTHER GUARANTORS FROM AND AGAINST ANY
AND ALL LIABILITY, CLAIMS, COSTS AND EXPENSES (INCLUDING REASONABLE ATTORNEYS
FEES AND EXPENSES) ARISING WITH RESPECT TO THE OBLIGATIONS AND EXCEEDING
SUCH OTHER GUARANTORS OBTAINED BENEFIT OR CONTRIBUTION PERCENTAGE THEREOF AS
PROVIDED HEREIN. Any amount due under this Section 9.21 shall be due and payable within ten days of demand therefor by the party entitled to payment and shall be made to the party entitled thereto at the
Borrowers address for notices under this Agreement, in immediately available funds, not later than 2:00 p.m., Central Standard or Daylight Time, on the date on which such payment shall come due. The remedies available to any Guarantor pursuant
to the provisions of this Section 9.21 are not exclusive. All rights and claims of contribution, indemnification and reimbursement under this Section 9.21 shall be subordinate in right of payment to the prior payment in full
of the Obligations. The provisions of this Section 9.21 shall, to the extent expressly inconsistent with any provision in any Loan Document, supersede such inconsistent provision.

9.22 Confidentiality. Each of the Agent and the Lenders agrees to maintain the confidentiality of the Information, except that
Information may be disclosed (a) to its Affiliates and to its and its Affiliates respective managers, administrators, trustees, partners, directors, officers, employees, agents, advisors and other representatives, including any credit
insurance providers, (it being understood that the Persons to whom such disclosure is made will be informed of the confidential nature of such Information and instructed to keep such Information confidential), (b) to the extent requested by any
regulatory authority purporting to have jurisdiction over it (including any self-regulatory authority, such as the National Association of Insurance Commissioners), (c) to the extent required by applicable laws or regulations or by any subpoena
or similar legal process, (d) to any other party hereto, (e) in connection with the exercise of any remedies hereunder or under any other Loan Document or any action or proceeding relating to this Agreement or any other Loan Document or
the enforcement of rights hereunder or thereunder, (f) subject to an agreement containing provisions substantially the same as those of this Section 9.22, to (i) any assignee of or participant in, or any prospective assignee of
or participant in, any of its rights or obligations under this Agreement or (ii) any actual or prospective counterparty (or its managers, administrators, trustees, partners, directors, officers, employees, agents, advisors and other
representatives) to any swap or derivative or similar transaction under which payments are to be made by reference relating to the Borrower or any Guarantor and their respective obligations, this Agreement or payments hereunder, (iii) any
rating agency or (iv) the CUSIP Service Bureau or any similar organization, (g) with the consent of the Borrower or (h) to the extent such Information (i) becomes publicly available other than as a result of a breach of this
Section or (ii) becomes available to the Agent or the Lenders or any of their respective Affiliates on a nonconfidential basis from a source other than the Borrower or any of its Subsidiaries. Any Person required to maintain the confidentiality
of Information as provided in this Section 9.22 shall be considered to have complied with its obligation to do so if such Person has exercised the same degree of care to maintain the confidentiality of such Information as such Person
would accord to its own confidential information.



- 79 -



---

9.23 Automatic Debits of Fees. With respect to any fee or any cost or expense due and
payable to the Agent under the Loan Documents (including attorneys fees and expenses that are payable pursuant to this Agreement or the other Loan Documents), the Borrower hereby irrevocably authorizes the Agent, after giving reasonable prior notice
to the Borrower, to debit any deposit account of the Borrower with BBVA Compass in an amount such that the aggregate amount debited from all such deposit accounts does not exceed such fee or cost or expense. If there are insufficient funds in such
deposit accounts to cover the amount of the fee or other cost or expense then due, such debits will be reversed (in whole or in part, in the Agents sole discretion) and such amount not debited shall be deemed to be unpaid. No such debit under
this Section 9.23 shall be deemed a set-off.

9.24 Electronic Communications. Notwithstanding any provision
of this Agreement, including Section 9.3, to the contrary, notices and other communications to the Lenders hereunder may be delivered or furnished by electronic communication (including e-mail and Internet or intranet websites) pursuant
to procedures approved by the Agent, provided that the foregoing shall not apply to notices to any Lenders pursuant to Article II if such Lender, as applicable, has notified the Agent that it is incapable of receiving notices under such
Article II by electronic communication. The Agent or the Borrower may, in its discretion, agree to accept notices and other communications to it hereunder by electronic communications pursuant to procedures approved by it, provided
that approval of such procedures may be limited to particular notices or communications. Unless the Agent otherwise prescribes, (a) notices and other communications sent to an e-mail address shall be deemed received upon the senders
receipt of an acknowledgement from the intended recipient (such as by the return receipt requested function, as available, return e-mail or other written acknowledgement), provided that if such notice or other communication is not sent
during the normal business hours of the recipient, such notice or communication shall be deemed to have been sent at the opening of business on the next business day for the recipient, and (b) notices or communications posted to an Internet or
intranet website shall be deemed received upon the deemed receipt by the intended recipient at its e-mail address as described in the foregoing clause (a) of notification that such notice or communication is available and identifying the
website address therefor.

9.25 Effectiveness of Facsimile and PDF Documents and Signatures. Loan Documents may be
transmitted and/or signed by facsimile and PDF. The effectiveness of any such documents and signatures shall, subject to applicable Requirement of Law, have the same force and effect as manually-signed originals and shall be binding on the Borrower,
the Guarantors, the Agent and the Lenders. The Agent may also require that any such documents and signatures be confirmed by a manually-signed original thereof; provided, however, that the failure to request or deliver the same shall
not limit the effectiveness of any facsimile or PDF document or signature.

(Signatures appear on following pages)



- 80 -



---

IN WITNESS WHEREOF, this Agreement is executed as of the date first above written.



BORROWER:PRIMEENERGY CORPORATIONBy:Beverly A. CummingsExecutive Vice President,
Treasurer and Chief Financial Officer




INITIAL GUARANTORS:PRIMEENERGY MANAGEMENT CORPORATIONBy:Beverly A. CummingsExecutive Vice President and Treasurer




PRIME OPERATING COMPANYBy:Beverly A. CummingsExecutive Vice President and Treasurer




EASTERN OIL WELL SERVICE COMPANYBy:Beverly A. CummingsExecutive Vice President and Treasurer


(Signatures continue on following pages)



- 81 -



---

SOUTHWEST OILFIELD
CONSTRUCTION COMPANYBy:Beverly A. Cummings
Executive Vice President and Treasurer




E O W S MIDLAND COMPANYBy:Beverly A. Cummings
Executive Vice President and Treasurer


(Signatures continue on following pages)



- 82 -



---

AGENT:COMPASS BANK
(successor in interest to Guaranty Bank, FSB),
as AgentBy:Kathleen J. Bowen Senior
Vice President




LENDER:COMPASS BANK (for
itself and as successor in interest to Guaranty Bank, FSB)By:Kathleen J. Bowen Senior
Vice PresidentApplicable Lending Office for Base Rate Loans and LIBO Rate Loans:24 Greenway Plaza, Suite 1400A
Houston, Texas 77046


(Signatures continue on following pages)



- 83 -



---

LENDER:BNP PARIBASBy:Name:Title:By:Name:Title:Applicable Lending Office for Base Rate Loans and LIBO Rate Loans:525 Washington Blvd.
Jersey City, New Jersey 07310


(Signatures continue on following pages)



- 84 -



---

LENDER:JPMORGAN CHASE BANK, N.A.By:Jo Linda Papadakis Vice
PresidentApplicable Lending Office for Base Rate Loans and LIBO Rate Loans:10 South Dearborn, Floor 07
Chicago, Illinois 60603-2003


(Signatures continue on following page)



- 85 -



---

LENDER:AMEGY BANK NATIONAL ASSOCIATIONBy:Mark A. Serice Senior Vice
PresidentApplicable Lending Office for Base Rate Loans and LIBO Rate Loans:4400 Post Oak Parkway
Houston, Texas 77027




- 86 -



---

Schedule 1.2

CERTAIN PERMITTED LIENS

Liens in favor the Jackson Group composed of Jeral W. Jackson, Inc., Pangaea Properties, Inc. and William H. Nichols by PrimeEnergy
Corporation, Sterling Asset and Income Funds A-1, A-2, AA-1 and AA-2 (now PrimeEnergy Asset and Income Funds A-1, A-2, AA-1 and AA-2) to secure the payment to the Jackson Group of the JPN Fee, being an amount of certain of the proceeds
and accounts arising from the sale of oil and gas from certain properties located in Garvin County, Oklahoma, as determined pursuant to the terms of that certain Memorandum of Agreement dated October 1, 1990, and as evidenced by Financing
Statement filed January 23, 1991, Volume 1295, Page 58, Garvin County, Oklahoma, and Financing Statement filed January 28, 1991, N-00844, Central Filing Office, Oklahoma County.



Schedule 1.2 - i



---

Schedule 4.8

LIABILITIES AND LITIGATION

Liabilities:

None.

Litigation:

None.



Schedule 4.8 - i



---

Schedule 4.12

ENVIRONMENTAL MATTERS

None.



Schedule 4.12 - i



---

Schedule 4.16

REFUNDS

None.



Schedule 4.16 - i



---

Schedule 4.17

GAS CONTRACTS

None.



Schedule 4.17 - i



---

Schedule 4.19

CASUALTIES

None.



Schedule 4.19 - i



---

Schedule 4.21

SUBSIDIARIES, PARTNERSHIPS AND CERTAIN INVESTMENTS

Subsidiaries of Borrower



|                                       
|---------------------------------------
|PrimeEnergy Management Corporation     
|Prime Operating Company                
|Eastern Oil Well Service Company       
|Southwest Oilfield Construction Company
|E O W S Midland Company                
|Prime Offshore L.L.C.                  

Partnerships in which Borrower is a Partner



|                                    
|------------------------------------
|Sterling Gas Drilling Fund 1981     
|Sterling Gas Drilling Fund 1982     
|Sterling Drilling Fund 1983-1       
|Sterling Drilling Fund 1983-2       
|Sterling Drilling Fund 1984-1       
|Sterling Drilling Fund 1984-2       
|Sterling Drilling Fund 1985-1       
|Sterling Drilling Fund 1985-2       
|Sterling Drilling Fund 1985-3       
|Sterling Drilling Fund 1986-1       
|Sterling Gas Drilling Fund 1980-2   
|PrimeEnergy Asset & Income Fund A-1 
|PrimeEnergy Asset & Income Fund A-2 
|PrimeEnergy Asset & Income Fund A-3 
|PrimeEnergy Asset & Income Fund AA-1
|PrimeEnergy Asset & Income Fund AA-2
|PrimeEnergy Asset & Income Fund AA-3
|PrimeEnergy Asset & Income Fund AA-4
|PrimeEnergy Asset & Income Trust A-1
|PrimeEnergy Asset & Income Trust A-2
|Chase Exploration L.P.              
|Chase Energy L.L.C.                 

Investments by Borrower in Partnerships



|                                  |  |   |          
|--------------------------------- |  | - | ---------
|Sterling Gas Drilling Fund 1980-2 |  | $ | 308,880  
|Sterling Gas Drilling Fund 1981   |  | $ | 377,662  
|Sterling Gas Drilling Fund 1982   |  | $ | 525,578  
|Sterling Drilling Fund 1983-1     |  | $ | 675,751  
|Sterling Drilling Fund 1983-2     |  | $ | 1,130,018
|Sterling Drilling Fund 1984-1     |  | $ | 501,243  



Schedule 4.21 - i



---

|                                     |  |   |          
|------------------------------------ |  | - | ---------
|Sterling Drilling Fund 1984-2        |  | $ | 91,613   
|Sterling Drilling Fund 1985-1        |  | $ | 171,805  
|Sterling Drilling Fund 1985-2        |  | $ | 300,597  
|Sterling Drilling Fund 1985-3        |  | $ | 223,731  
|Sterling Drilling Fund 1986-1        |  | $ | 1,144,442
|PrimeEnergy Asset & Income Fund A-1  |  | $ | 152,565  
|PrimeEnergy Asset & Income Fund A-2  |  | $ | 1,524,877
|PrimeEnergy Asset & Income Fund A-3  |  | $ | 1,172,615
|PrimeEnergy Asset & Income Fund AA-1 |  | $ | 1,004,394
|PrimeEnergy Asset & Income Fund AA-2 |  | $ | 735,014  
|PrimeEnergy Asset & Income Fund AA-3 |  | $ | 1,613,951
|PrimeEnergy Asset & Income Fund AA-4 |  | $ | 533,432  
|PrimeEnergy Asset & Income Trust A-1 |  | $ | 1,329,018
|PrimeEnergy Asset & Income Trust A-2 |  | $ | 1,351,805
|Chase Exploration L.P.               |  | $ | 2,475    
|Chase Energy L.L.C.                  |  | $ | 5,000    



Schedule 4.21 - ii



---

Schedule 4.23

TAXPAYER I.D. AND ORGANIZATIONAL NUMBERS



|                                |  |                   |  |                      
|------------------------------- |  | ----------------- |  | ---------------------
|Entity                          |  | Taxpayer I.D. No. |  | Organizational No.   
|                                |  |                  
|Borrower                        |  | 84-0637348        |  | 790016(Delaware)     
|                                |  |                  
|Prime Energy Management         |  | 13-2929065        |  | 424708(New York)     
|                                |  |                  
|Prime Operating                 |  | 76-0355677        |  | 1215929(Texas)       
|                                |  |                  
|Eastern Oil Well Service        |  | 06-1313613        |  | 133998(West Virginia)
|                                |  |                  
|Southwest Oilfield Construction |  | 73-1411394        |  | 1900516436(Oklahoma) 
|                                |  |                  
|E O W S Midland                 |  | 06-1603694        |  | 01609937(Texas)      



Schedule 4.23 - i



---

EXHIBIT I

[FORM OF NOTE]

PROMISSORY NOTE

(this Note)



|                     |  |                |  |                  
|-------------------- |  | -------------- |  | -----------------
|$___________________ |  | Houston, Texas |  | ___________, 20__

FOR VALUE RECEIVED and WITHOUT GRACE (except to the extent, if any, provided in the Credit Agreement referred to hereinafter), the
undersigned (Maker, whether one or more, and if more than one, with liability hereunder being joint and several) promises to pay to the order of _________________________ (Payee), at the Principal Office (as such term is
defined in the Second Amended and Restated Credit Agreement referred to hereinafter), ___________________ AND NO/100 DOLLARS ($___________) or so much thereof as may be advanced against this Note and remains unpaid pursuant to the Second Amended and
Restated Credit Agreement dated effective July 30, 2010 by and among Maker, the parties identified therein as the Initial Guarantors, the lenders signatory thereto or bound thereby from time to time, including, without limitation,
Payee, and Compass Bank, in its capacities as administrative agent, issuing bank for letters of credit issued thereunder and collateral agent for such lenders and, under certain circumstances, certain other parties (as amended, supplemented,
restated or otherwise modified from time to time, the Credit Agreement), together with interest at the rates and calculated as provided in the Credit Agreement.

Reference is hereby made to the Credit Agreement for matters governed thereby, including, without limitation, certain events which will
entitle the holder hereof to accelerate the maturity of all amounts due hereunder. Capitalized terms used but not defined in this Note shall have the respective meanings assigned to such terms in the Credit Agreement.

This Note is issued pursuant to, is a Note under, and is payable as provided in the Credit Agreement. Subject to compliance
with applicable provisions of the Credit Agreement, Maker may at any time pay the full amount or any part of this Note without the payment of any premium or fee, but such payment shall not, until this Note is fully paid and satisfied, excuse the
payment as it becomes due of any payment on this Note provided for in the Credit Agreement.

This Note represents, in part, a
renewal, but not a novation or discharge, of all or a portion of the Indebtedness of Maker previously evidenced by the Promissory Note or Promissory Notes issued by Maker pursuant to the Existing Credit Agreement.

Without being limited thereto or thereby, this Note is secured by the Security Documents.



Exhibit I - i



---

THIS NOTE SHALL BE
GOVERNED AND CONTROLLED BY THE LAWS OF THE STATE OF TEXAS, WITHOUT
GIVING EFFECT TO PRINCIPLES THEREOF RELATING TO CONFLICTS OF LAW.



PRIMEENERGY CORPORATIONBy:Name:Title:




Exhibit I - ii



---

EXHIBIT I-A

[FORM OF ADDITIONAL COMPASS NOTE]

PROMISSORY NOTE

(this Note)



|                     |  |                |  |                  
|-------------------- |  | -------------- |  | -----------------
|$___________________ |  | Houston, Texas |  | ___________, 2010

FOR VALUE RECEIVED and WITHOUT GRACE (except to the extent, if any, provided in the Credit Agreement referred to hereinafter), the
undersigned (Maker, whether one or more, and if more than one, with liability hereunder being joint and several) promises to pay to the order of COMPASS BANK (Payee), as successor in interest to Guaranty Bank, FSB, at the
Principal Office (as such term is defined in the Second Amended and Restated Credit Agreement referred to hereinafter), ___________________ AND NO/100 DOLLARS ($___________) or so much thereof as may be advanced against this Note and remains unpaid
pursuant to the Second Amended and Restated Credit Agreement dated effective July 30, 2010 by and among Maker, the parties identified therein as the Initial Guarantors, the lenders signatory thereto or bound thereby from time to
time, including, without limitation, Payee, and Compass Bank, in its capacities as administrative agent, issuing bank for letters of credit issued thereunder and collateral agent for such lenders and, under certain circumstances, certain other
parties (as amended, supplemented, restated or otherwise modified from time to time, the Credit Agreement), together with interest at the rates and calculated as provided in the Credit Agreement.

Reference is hereby made to the Credit Agreement for matters governed thereby, including, without limitation, certain events which will
entitle the holder hereof to accelerate the maturity of all amounts due hereunder. Capitalized terms used but not defined in this Note shall have the respective meanings assigned to such terms in the Credit Agreement.

This Note is issued pursuant to, is a Note under, and is payable as provided in the Credit Agreement. Subject to compliance
with applicable provisions of the Credit Agreement, Maker may at any time pay the full amount or any part of this Note without the payment of any premium or fee, but such payment shall not, until this Note is fully paid and satisfied, excuse the
payment as it becomes due of any payment on this Note provided for in the Credit Agreement.

This Note represents, in part, a
renewal, but not a novation or discharge, of all or a portion of the Indebtedness of Maker previously evidenced by the Promissory Note or Promissory Notes issued by Maker pursuant to the Existing Credit Agreement.

Without being limited thereto or thereby, this Note is secured by the Security Documents.



Exhibit I-A - i



---

THIS NOTE SHALL BE
GOVERNED AND CONTROLLED BY THE LAWS OF THE STATE OF TEXAS, WITHOUT
GIVING EFFECT TO PRINCIPLES THEREOF RELATING TO CONFLICTS OF LAW.



PRIMEENERGY CORPORATIONBy:Name:Title:




Exhibit I-A - ii



---

EXHIBIT II

[FORM OF BORROWING REQUEST]

[Date]

Compass Bank, as
Agent

24 Greenway Plaza, Suite 1400A

Houston, Texas 77046

Attention:
[]



| | Re: | Second Amended and Restated Credit Agreement dated effective July 30, 2010 by and among PrimeEnergy Corporation, certain other parties, Compass Bank, an Alabama
banking association, as Agent, and the lenders signatory thereto or bound thereby from time to time (as amended, supplemented, restated or otherwise modified from time to time, the Credit Agreement)
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Ladies and Gentlemen:

Pursuant
to the Credit Agreement, the undersigned hereby makes the requests indicated below:



| | 1. | Loans
| | -- | -----

(a)
Amount of new Loan: $__________

(b) Requested funding date: ______________, 20__

(c) $______________ of such Loan is to be a Base Rate Loan; and

$______________ of such Loan is to be a LIBO Rate Loan.

(d) Requested Interest Period for LIBO Rate Loan: ____ months.



| | 2. | Continuation or conversion of LIBO Rate Loan maturing on ___________:
| | -- | ---------------------------------------------------------------------

(a) Amount to be continued as a LIBO Rate Loan is
$, with an Interest Period of ______________ months; and

(b) Amount to be converted to a Base Rate Loan is
$.



| | 3. | Conversion of Base Rate Loan:
| | -- | -----------------------------

(a) Requested conversion date: ____________, 20___.

(b) Amount to be converted to a LIBO Rate Loan is
$, with an Interest Period of _____ months.



Exhibit II - i



---

CERTIFICATION

The undersigned individual certifies that [s]he is the ___________ of the Borrower, has obtained all consents necessary, and as such
[s]he is authorized to execute this request on behalf of the Borrower. The undersigned individual further certifies, represents, and warrants on behalf of the Borrower, that the Borrower is entitled to receive the requested borrowing, continuation,
or conversion under the terms and conditions of the Credit Agreement and that, to the best knowledge of such undersigned individual, there exists as of the date hereof neither a Default nor an Event of Default under the Credit Agreement.

Each capitalized term used but not defined herein shall have the meaning assigned to such term in the Credit Agreement.



Very truly yours,________________ of
PrimeEnergy Corporation




Exhibit II - ii



---

EXHIBIT III

[FORM OF COMPLIANCE CERTIFICATE]

[Date]

Compass Bank, as
Agent

24 Greenway Plaza, Suite 1400A

Houston, Texas 77046

Attention: Kathleen J.
Bowen



| | Re: | Second Amended and Restated Credit Agreement dated effective July, 2010 by and among PrimeEnergy Corporation, certain other parties and Compass Bank, as Agent, and the
Lenders signatory thereto from time to time (as amended, restated, or supplemented from time to time, the Credit Agreement)
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Ladies and Gentlemen:

Pursuant to applicable requirements of the Credit Agreement, the undersigned, as a Responsible Officer of the Borrower, hereby certifies
to you the following information as true and correct as of the date hereof or for the period indicated, as the case may be:

1.
To the best of the knowledge of the undersigned, no Default or Event of Default exists as of the date hereof or has occurred since the date of our previous certification to you, if any.

1. To the best of the knowledge of the undersigned, the following Defaults or Events of Default exist as of the date hereof or have
occurred since the date of our previous certification to you, if any, and the actions set forth below are being taken to remedy such circumstances:

2. The compliance of the Borrower with the financial covenants of the Credit Agreement, as of the close of business on
, is evidenced by the following:



| | (a) | Section 6.1: Limitation on Commodity Hedge Agreements. See the attached report demonstrating compliance with this limitation.
| | --- | -----------------------------------------------------------------------------------------------------------------------------



| | (b) | Section 6.6: Limitation on Loans and Advances to Limited Partnerships and Prime Offshore, L.L.C. See the attached report demonstrating compliance with this
limitation.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | Section 6.7: Limitation on Investments in Limited Partnerships. See the attached report demonstrating compliance with this limitation.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------



Exhibit III - i



---

| | (d) | Section 6.14: Current Ratio.
| | --- | ----------------------------



|             |  |        
|------------ |  | -------
|Required     |  | Actual 
|1.00 to 1.00 |  | to 1.00



| | (e) | Section 6.15: Total Indebtedness to EBITDAX Ratio.
| | --- | --------------------------------------------------



|             |  |        
|------------ |  | -------
|Required     |  | Actual 
|4.00 to 1.00 |  | to 1.00



| | (f) | Section 6.16: Interest Coverage Ratio.
| | --- | --------------------------------------



|             |  |       
|------------ |  | ------
|Required     |  | Actual
|3.00 to 1.00 |  | to 1.0

See the attached detailed calculations of the above in this Section 2.

3. No Material Adverse Effect has occurred since the date of the Financial Statements dated as of __________.

Each capitalized term used but not defined herein shall have the meaning assigned to such term in the Credit Agreement.



Very truly yours,PRIMEENERGY CORPORATIONBy:Name:Title:




Exhibit III - ii



---

EXHIBIT IV

FACILITY AMOUNTS



|                                                                                                                                                                    |  |                  |   |  |                 |            
|------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------- | - |  | --------------- | -----------
|Name/Address of Lender                                                                                                                                              |  | Percentage Share |   |  | Facility Amount
|Compass Bank (as successor in
interest to Guaranty Bank, FSB) 24 Greenway Plaza, Suite 1400A
Houston, Texas 77046 Attn: Kathleen J. Bowen Facsimile: (713) 499-8722 |  | 29.4             | % |  | $               | 73,500,000 
|BNP Paribas 1200 Smith Street Houston, Texas 77002 Attn: Betsy
Jocher Facsimile: (713) 659-6915                                                                     |  | 30.0             | % |  | $               | 75,000,000 
|JPMorgan Chase Bank, N.A. 712
Main Street 8th Floor South Houston,
Texas 77002 Attn: Jo Linda Papadakis
Facsimile: (713) 216-7770                                   |  | 25.0             | % |  | $               | 62,500,000 
|Amegy Bank National Association
4400 Post Oak Parkway 4th Floor
Houston, Texas 77027 Attn: Energy Lending Dept. Facsimile: (713) 561-0345                           |  | 15.0             | % |  | $               | 37,500,000 
|Compass Bank 24 Greenway
Plaza, Suite 1400A Houston, Texas 77046
Attn: Kathleen J. Bowen Facsimile: (713)
499-8722                                                  |  | 0.6              | % |  | $               | 1,500,000  
|                                                                                                                                                                    |  |                  |   |  |                 |            
|                                                                                                                                                                    |  | 100              | % |  | $               | 250,000,000



Exhibit IV - i



---

EXHIBIT V

[Form of Assignment Agreement]

This ASSIGNMENT AGREEMENT (as amended, supplemented, restated or otherwise modified from time to time, this Agreement) is
dated as of ________________, ____ by and between _____________________ (the Assignor) and _________________ (the Assignee).

RECITALS

WHEREAS, the Assignor is a party to the Second Amended and Restated Credit Agreement dated effective July 30, 2010 (as amended,
supplemented, restated or otherwise modified from time to time, the Credit Agreement), by and among PrimeEnergy Corporation, certain other parties, each of the lenders that is or becomes a party thereto as provided in Section 9.1(b)
of the Credit Agreement (individually, together with its successors and assigns, a Lender, and collectively, together with their successors and assigns, the Lenders), and Compass Bank, as agent for the Lenders and certain
other parties under certain circumstances (in such capacity, together with its successors in such capacity, the Agent); and

WHEREAS, the Assignor proposes to sell, assign and transfer to the Assignee, and the Assignee proposes to purchase and assume from the
Assignor, [all][a portion] of the Assignors Facility Amount and its outstanding Loans, all on the terms and conditions of this Agreement;

NOW, THEREFORE, in consideration of the foregoing and the mutual agreements contained herein, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE I

DEFINITIONS AND INTERPRETATION

1.1 Definitions from Credit Agreement. All capitalized terms used but not defined herein have the respective meanings given to
such terms in the Credit Agreement.

1.2 Additional Defined Terms. As used herein, the following terms have the
following respective meanings:

Assigned Interest shall mean all of Assignors (in its
capacity as a Lender) rights and obligations (i) under the Credit Agreement and the other Loan Documents in respect of [all of] [the portion of] the Facility Amount of the Assignor in the principal amount equal to
$, (ii) to make Loans and participate in Letter of Credit under its Commitment up to such amount referenced above and
any right to receive payments for the Loans currently outstanding under its Commitment in the principal amount of $, plus
the interest and fees which will accrue with respect thereto from and after the Assignment Date.

Assignment Date shall mean _____________, ____.



Exhibit V - i



---

1.3 References. References in this Agreement to Schedule, Exhibit, Article, or
Section numbers shall be to Schedules, Exhibits, Articles, or Sections of this Agreement, unless expressly stated to the contrary. References in this Agreement to hereby, herein, hereinafter,
hereinabove, hereinbelow, hereof, hereunder and words of similar import shall be to this Agreement in its entirety and not only to the particular Schedule, Exhibit, Article, or Section in which such
reference appears. Except as otherwise indicated, references in this Agreement to statutes, sections, or regulations are to be construed as including all statutory or regulatory provisions consolidating, amending, replacing, succeeding, or
supplementing the statute, section, or regulation referred to. References in this Agreement to writing include printing, typing, lithography, facsimile reproduction, and other means of reproducing words in a tangible visible form.
References in this Agreement to agreements and other contractual instruments shall be deemed to include all exhibits and appendices attached thereto and all subsequent amendments and other modifications to such instruments, but only to the extent
such amendments and other modifications are not prohibited by the terms of this Agreement. References in this Agreement to Persons include their respective successors and permitted assigns.

1.4 Articles and Sections. This Agreement, for convenience only, has been divided into Articles and Sections; and it is understood
that the rights and other legal relations of the parties hereto shall be determined from this instrument as an entirety and without regard to the aforesaid division into Articles and Sections and without regard to headings prefixed to such Articles
or Sections.

1.5 Number and Gender. Whenever the context requires, reference herein made to the single number shall be
understood to include the plural; and likewise, the plural shall be understood to include the singular. Definitions of terms defined in the singular or plural shall be equally applicable to the plural or singular, as the case may be, unless
otherwise indicated. Words denoting sex shall be construed to include the masculine, feminine and neuter, when such construction is appropriate; and specific enumeration shall not exclude the general but shall be construed as cumulative.

1.6 Negotiated Transaction. Each party to this Agreement affirms to the other that it has had the opportunity to consult, and
discuss the provisions of this Agreement with, independent counsel and fully understands the legal effect of each provision.

ARTICLE II

SALE AND ASSIGNMENT

2.1 Sale and Assignment. On the terms and conditions set forth herein, effective on and as of the Assignment Date, the Assignor
hereby sells, assigns and transfers to the Assignee, and the Assignee hereby purchases and assumes from the Assignor, all of the right, title and interest of the Assignor in and to, and all of the obligations of the Assignor in respect of, the
Assigned Interest. Such sale, assignment and transfer is without recourse and, except as expressly provided in this Agreement, without representation or warranty.



Exhibit V - ii



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2.2 Assumption of Obligations. The Assignee agrees with the Assignor (for the express
benefit of the Assignor and the Borrower) that the Assignee will, from and after the Assignment Date, assume and perform all of the obligations of the Assignor in respect of the Assigned Interest. From and after the Assignment Date: (a) the
Assignor shall be released from the Assignors obligations in respect of the Assigned Interest, and (b) the Assignee shall be entitled to all of the Assignors rights, powers and privileges under the Credit Agreement and the other
Loan Documents in respect of the Assigned Interest.

2.3 Consent by Agent. By executing this Agreement as provided
below, in accordance with Section 9.1(b) of the Credit Agreement, the Agent hereby acknowledges notice of the transactions contemplated by this Agreement and consents to such transactions.

ARTICLE III

PAYMENTS

3.1 Payments. As consideration for the sale, assignment and transfer contemplated by Section 2.1, the Assignee shall, on the
Assignment Date, assume Assignors obligations in respect of the Assigned Interest and pay to the Assignor an amount equal to the Loan Balance, if any, all accrued and unpaid interest and fees with respect to the Assigned Interest as of the
Assignment Date. Except as otherwise provided in this Agreement, all payments hereunder shall be made in Dollars and in immediately available funds, without setoff, deduction or counterclaim.

3.2 Allocation of Payments. The Assignor and the Assignee agree that (i) the Assignor shall be entitled to any payments of
principal with respect to the Assigned Interest made prior to the Assignment Date, together with any interest and fees with respect to the Assigned Interest accrued prior to the Assignment Date, (ii) the Assignee shall be entitled to any
payments of principal with respect to the Assigned Interest made from and after the Assignment Date, together with any and all interest and fees with respect to the Assigned Interest accruing from and after the Assignment Date, and (iii) the
Agent is authorized and instructed to allocate payments received by it for the account of the Assignor and the Assignee as provided in the foregoing clauses. Each party hereto agrees that it will hold any interest, fees or other amounts that it may
receive to which the other party hereto shall be entitled pursuant to the preceding sentence for account of such other party and pay, in like money and funds, any such amounts that it may receive to such other party promptly upon receipt.

3.3 Delivery of Note. In the event the Assignee is not already a Lender under the Credit Agreement, promptly following
the receipt by the Assignor of the consideration required to be paid under Section 3.1 hereof, the Assignor shall notify the Agent to request that the Borrower execute and deliver a new Note to the Assignee dated the Assignment Date.

3.4 Further Assurances. The Assignor and the Assignee hereby agree to execute and deliver such other instruments, and
take such other actions, as either party may reasonably request in connection with the transactions contemplated by this Agreement.



Exhibit V - iii



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ARTICLE IV

CONDITIONS PRECEDENT

The effectiveness of the sale, assignment and transfer contemplated hereby is subject to the satisfaction of each of the following
conditions precedent:

(a) the execution and delivery of this Agreement by the Assignor and the Assignee;

(b) the receipt by the Assignor of the payments required to be made under Section 3.1; and

(c) the acknowledgment and consent by the Agent contemplated by Section 2.3.

ARTICLE V

REPRESENTATIONS AND WARRANTIES

5.1 Representations and Warranties of Assignor. The Assignor represents and warrants to the Assignee as follows:

(a) it has all requisite power and authority, and has taken all action necessary to execute and deliver this Agreement and
to fulfill its obligations under, and consummate the transactions contemplated by, this Agreement;

(b) the
execution, delivery and compliance with the terms hereof by the Assignor and the delivery of all instruments required to be delivered by it hereunder do not and will not violate any Requirement of Law applicable to it;

(c) this Agreement has been duly executed and delivered by it and constitutes the legal, valid and binding obligation of
the Assignor, enforceable against it in accordance with its terms;

(d) all approvals and authorizations of,
all filings with and all actions by any Governmental Authority necessary for the validity or enforceability of its obligations under this Agreement have been obtained;

(e) the Assignor has good title to, and is the sole legal and beneficial owner of, the Assigned Interest, free and clear
of all Liens, claims, participations or other charges of any nature whatsoever; and

(f) the transactions
contemplated by this Agreement are commercial banking transactions entered into in the ordinary course of the banking business of the Assignor.



Exhibit V - iv



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5.2 Disclaimer. Except as expressly provided in Section 5.1 hereof, the
Assignor does not make any representation or warranty, nor shall it have any responsibility to the Assignee, with respect to the accuracy of any recitals, statements, representations or warranties contained in the Credit Agreement or in any other
Loan Document or for the value, validity, effectiveness, genuineness, execution, legality, enforceability or sufficiency of the Credit Agreement, the Notes or any other Loan Document or for any failure by the Borrower or any other Person (other than
Assignor) to perform any of its obligations thereunder or for the existence, value, perfection or priority of any collateral security or the financial or other condition of the Borrower or any other Person, or any other matter relating to the Credit
Agreement or any other Loan Document or any extension of credit thereunder.

5.3 Representations and Warranties of
Assignee. The Assignee represents and warrants to the Assignor as follows:

(a) it has all requisite power
and authority, and has taken all action necessary to execute and deliver this Agreement and to fulfill its obligations under, and consummate the transactions contemplated by, this Agreement;

(b) the execution, delivery and compliance with the terms hereof by the Assignee and the delivery of all instruments
required to be delivered by it hereunder do not and will not violate any Requirement of Law applicable to it;

(c) this Agreement has been duly executed and delivered by it and constitutes the legal, valid and binding obligation of
the Assignee, enforceable against it in accordance with its terms;

(d) all approvals and authorizations of,
all filings with and all actions by any Governmental Authority necessary for the validity or enforceability of its obligations under this Agreement have been obtained;

(e) the Assignee has received copies of the Credit Agreement and the other Loan Documents, as well as copies of all
Financial Statements previously provided by the Borrower in satisfaction of obligations under the Credit Agreement.

(f) the Assignee has fully reviewed the terms of the Credit Agreement and the other Loan Documents and has independently
and without reliance upon the Assignor, and based on such information as the Assignee has deemed appropriate, made its own credit analysis and decision to enter into this Agreement;

(g) if the Assignee is not incorporated under the laws of the United Sates of America or a state thereof, the Assignee has
contemporaneously herewith delivered to the Agent and the Borrower such documents as are required by the Credit Agreement; and

(h) the transactions contemplated by this Agreement are commercial banking transactions entered into in the ordinary
course of the banking business of the Assignee.



Exhibit V - v



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ARTICLE VI

MISCELLANEOUS

6.1 Notices. All notices and other communications provided for herein (including any modifications of, or waivers, requests or
consents under, this Agreement) shall be given or made in writing (including by telecopy) to the intended recipient at its Address for Notices specified below its name on the signature pages hereof or, as to either party, at such other
address as shall be designated by such party in a notice to the other party.

6.2 Amendment, Modification or Waiver. No
provision of this Agreement may be amended, modified or waived except by an instrument in writing signed by the Assignor and the Assignee, and consented to by the Agent.

6.3 Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their
respective successors and permitted assigns. The representations and warranties made herein by the Assignee are also made for the benefit of the Agent, and the Assignee agrees that the Agent is entitled to rely upon such representations and
warranties.

6.4 Assignments. Neither party hereto may assign any of its rights or obligations hereunder except in
accordance with the terms of the Credit Agreement.

6.5 Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be identical and all of which, taken together, shall constitute one and the same instrument, and each of the parties hereto may execute this Agreement by signing any such counterpart.

6.6 Governing Law. THIS AGREEMENT (INCLUDING THE
VALIDITY AND ENFORCEABILITY HEREOF) SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF TEXAS, OTHER THAN THE
CONFLICT OF LAWS RULES THEREOF.

6.7 Expenses. To the extent not paid by the Borrower pursuant to the terms of the Credit Agreement, each party hereto shall bear
its own expenses in connection with the execution, delivery and performance of this Agreement.

6.8 Waiver of Jury
Trial. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES, TO THE FULLEST
EXTENT PERMITTED BY LAW, ANY AND ALL RIGHT TO TRIAL BY JURY
IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT
OR THE TRANSACTIONS CONTEMPLATED HEREBY.



Exhibit V - vi



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IN WITNESS WHEREOF, the parties hereto have caused this Assignment Agreement to be executed
and delivered as of the date first above written.



ASSIGNOR:By:Name:Title:Address for NoticesFacsimile No.Telephone No.:Attention:




Exhibit V - vii



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ASSIGNEE:By:Name:Title:Applicable Lending Office
For Base Rate Loans and LIBO Rate
Loans:Address for Notices:Facsimile No.:Telephone No.:Attention:




Exhibit V - viii



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|                               |  | 
|------------------------------ |  | 
|ACKNOWLEDGED AND CONSENTED TO:
|                              
|COMPASS BANK, as
Agent        
|                               | 
|By:                            |  | 
|Name:                          |  | 
|Title:                         |  | 
|                              
|PRIMEENERGY CORPORATION       
|                               | 
|By:                            |  | 
|Name:                          |  | 
|Title:                         |  | 



Exhibit V - ix



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EXHIBIT VI

This SECURITY AGREEMENT (PLEDGE) (as amended, supplemented, restated or otherwise modified from time to time, this Security
Agreement) is made and entered into effective the 30th day of July, 2010, by PRIMEENERGY CORPORATION, a Delaware corporation, the address for which, for purposes hereof, is One Landmark Square, Stamford Connecticut 06901, Attn:
Beverly A. Cummings (Debtor), in favor of COMPASS BANK, an Alabama banking association and successor in interest to Guaranty Bank, FSB, a federal savings bank, in its capacity as agent under the Second Amended and Restated
Credit Agreement referred to below, the address for which for purposes hereof is 24 Greenway Plaza, Suite 1400A, Houston, Texas 770456, Attn: Kathleen J. Bowen (in such capacity, together with its successors and assigns in such capacity,
Secured Party), for the benefit of the lenders party to such Second Amended and Restated Credit Agreement from time to time (the Lenders) and, under certain circumstances, certain additional parties.

W I T N E S S E T H:

WHEREAS, pursuant to a Second Amended and Restated Credit Agreement dated effective of even date herewith by and among Debtor, certain
other parties, as guarantors, the Lenders and Secured Party (as amended, supplemented, restated or otherwise modified from time to time, the Credit Agreement), Debtor is obligated for the full and prompt payment when due of the
principal of, premium, if any, and interest on the promissory notes and loans made pursuant to the Credit Agreement; and

WHEREAS, pursuant to the Credit Agreement, and as a condition to the obligations of the Lenders to make or maintain loans or participate
in letters of credit issued thereunder and the obligation of Secured Party to issue such letters of credit, Debtor has agreed and is required to execute and deliver this Security Agreement;

NOW, THEREFORE, (i) in order to comply with the terms and conditions of the Credit Agreement (ii) for and in consideration of
the premises and the agreements herein contained and (iii) for other good and valuable consideration, the receipt and sufficiency of all of which being hereby acknowledged, Debtor hereby agrees with Secured Party as follows:

A. DEFINITIONS.

1. Terms Defined Above. As used in this Security Agreement (Pledge), each of the terms Credit
Agreement, Debtor, Lenders, Secured Party and Security Agreement shall have the meaning indicated above for such term.

2. Terms Defined in Credit Agreement. Capitalized terms used and not defined herein shall have the respective
meanings assigned to such terms in the Credit Agreement.



Exhibit VI - i



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3. Additional Defined Terms. The following terms, as used in this
Security Agreement (Pledge), shall have the respective meanings indicated below, unless the context otherwise requires:

Collateral shall mean all of Debtors right, title and interest in and to (a) the Shares,
including, without limitation, (i) the Distributions, (ii) allocation of loss, gain, deduction, credit or similar items, (iii) property or rights issued in connection with, or as a result of a conversion of, or substituted or
exchanged for, interests in the Companies, and (iv) all papers, documents, chattel paper, instruments and general intangibles relating to or evidencing all or any part of the Collateral described in clauses (i) through (iii) above,
including, without limitation, certificates evidencing the Shares, (b) all proceeds, income, fees, moneys, salaries or other distributions made with respect to the Shares and (c) any and all proceeds of or from any of the above.

Companies shall mean, collectively, PrimeEnergy Management, Prime Operating, Eastern Oil
Well Service, Southwest Oilfield Construction and EOWS Midland.

Distributions shall mean
(i) all of Debtors rights to receive and payments of proceeds, income, dividends, distributions, returns or repayments of capital or loans, profits, and other sums, whether payable in cash or otherwise, attributable to the Shares, and
(ii) all other payments or any other sums of any nature payable to Debtor or paid to Debtor by or on behalf of the Companies.

Secured Creditors shall mean Secured Party, the Lenders and any other Lender Hedge Counterparties.

Secured Obligations shall mean the Obligations.

Shares shall mean (i) any and all shares of the common stock, par value $_______ per share, of
PrimeEnergy Management now or hereafter owned by Debtor, including without limitation, those certain _______ shares of the common stock, par value $________ per share, of PrimeEnergy Management evidenced by Certificate No. ___ registered in the
name of Debtor on the books of PrimeEnergy Management; (ii) any and all shares of the common stock, par value $_______ per share, of Prime Operating now or hereafter owned by Debtor, including without limitation, those certain ___________
shares of the common stock, par value $_______ per share, of Prime Operating evidenced by Certificate No. ___ registered in the name of Debtor on the books of Prime Operating; (iii) any and all shares of the common stock, par value
$_________ per share, of Eastern Oil Well Service now or hereafter owned by Debtor, including, without limitation, those certain ________ shares of the common stock, par value $_______ per share, of Eastern Oil Well Service evidenced by Certificate
No. ___ registered in the name of Debtor on the books of Eastern Oil Well Service; (iv) all shares of the common stock, par value $_______ per share, of Southwest Oilfield Construction now or hereafter owned by Debtor, including, without
limitation, those certain ______ shares of the common stock, par value $_________ per share of Southwest Oilfield Construction evidenced by Certificate No. ___ registered in the name of Debtor on the books of Southwest Oilfield Construction;
and (v) and all shares of the common stock, par value $_______ per share, of EOWS Midland now or



Exhibit VI - ii



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hereafter owned by Debtor, including, without limitation, those certain ______ shares of the common stock, par value $________ per share, of EOWS Midland evidenced by Certificate No. ___
registered in the name of Debtor on the books of EOWS Midland.

B. PLEDGE. Debtor has pledged, and by these presents
does pledge, unto Secured Party, and its successors and assigns, for the benefit of the Secured Creditors, and Debtor hereby grants to Secured Party, and its successors and assigns, for the benefit of the Secured Creditors, a security interest in
and to, the Collateral, to the fullest extent the Collateral may be assigned pursuant to applicable law.

C. OBLIGATIONS
SECURED. The rights granted pursuant to Article B above are granted to Secured Party, for the benefit of the Secured Creditors, to secure the payment and performance of the Secured Obligations.

D. WARRANTIES AND REPRESENTATIONS BY DEBTOR. Debtor warrants and represents to Secured Party, for the benefit of the Secured
Creditors, as follows:

1. Collateral. Subject in each case to Permitted Liens, Debtor has good title to
the Collateral and has full power and authority to assign the Collateral, and no other Person has any right, title or interest therein, nor are there any enforceable provisions in any indenture, contract, agreement or other document controlling
(directly or indirectly) Debtor or to which Debtor is a party or is bound which affect the Collateral, directly or indirectly, which prohibit the execution and delivery of this Security Agreement or the performance of its terms. Except for the
security interest of Secured Party herein and other Permitted Liens, Debtor is the owner of all the Collateral, free from any Liens or other right, title or interest of any other Person.

2. Prior Financing Statements. Other than with respect to any Permitted Liens, there is no presently effective
financing statement (or other evidence of a Lien) now on file in any public office covering any of the Collateral in which Debtor is named as debtor or assignor, and no presently effective security interest has attached or been perfected in the
Collateral or any part thereof.

3. Jurisdiction of Organization. The jurisdiction of organization of
Debtor is as set forth in the preamble hereof.

E. AGREEMENTS OF DEBTOR. Debtor covenants and agrees with Secured
Party, for the benefit of the Secured Creditors, as follows:

1. Filings of Financing Statements. Debtor
shall not, so long as any Secured Obligation remains outstanding or there exists any commitment on the part of the Lenders to make or maintain loans or participate in letters of credit pursuant to the Credit Agreement or on the part of Secured Party
to issue letters of credit pursuant to the Credit Agreement, execute or authorize the filing of, and there will not be on file in any public office, any financing statement or statements (or other evidence of any Lien) covering the Collateral or any
interest therein, except any financing statement filed or to be filed in respect of and for the security interest to Secured Party granted or provided for in this Security Agreement or any other security agreement or security agreements by and
between Debtor and Secured Party or with respect to any Permitted Liens.



Exhibit VI - iii



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2. Notice of Change. Debtor shall promptly notify Secured Party of
any change in the jurisdiction of organization of Debtor.

3. Defense of Claims. Debtor shall defend the
Collateral against all claims and demands of all Persons at any time claiming the same or any interest therein adverse to Secured Party, other than holders of Permitted Liens.

4. Payover. After the occurrence and during the continuation of an Event of Default, Debtor shall make payment of
any Collateral which is due and owing to Debtor directly to Secured Party until the termination of this Security Agreement.

5. Power of Attorney. Subject to the further provisions of this Section 5, Debtor hereby irrevocably
appoints Secured Party, for the benefit of the Secured Creditors, as Debtors true and lawful agent and attorney-in-fact, with full power of substitution, in the name of Secured Party or in the name of Debtor, for the sole use and benefit of
Secured Party and the other Secured Creditors, but at the cost and expense of Debtor, to exercise all or any of the following powers and rights with respect to the Collateral (without any obligation on the part of Secured Party to exercise any of
the following powers and rights): (a) to demand, receive, collect, sue and give acquittance for, settle, compromise, compound, prosecute or defend any action or proceeding with respect to the Collateral; (b) to endorse, collect, deposit
and receipt for any checks, drafts or other means of payment thereof received from any source and constituting a portion of the Collateral; (c) to receive, collect and demand payment of all the Collateral due and payable to Debtor with respect
to the Shares and to apply the Collateral against the Secured Obligations in accordance with the Collateral Agency Agreement; (d) to make payments thereon directly to Secured Party; and (e) to exercise, enforce, enjoy, carry out, receive
and/or perform any and all rights, powers, duties, benefits, obligations and remedies of Debtor with respect to and arising under the Collateral; provided, however, the exercise by Secured Party of or failure of Secured Party to
exercise any such authority shall in no manner affect the liability of Debtor hereunder or as to the Secured Obligations, and Secured Party shall be under no obligation or duty to exercise any of the powers hereby conferred upon it and shall be
without liability for any act or failure to act in connection with the collection of, or the preservation of any rights under, any of the Collateral; and provided, further, Secured Party shall exercise such powers only upon the
occurrence and during the continuation of an Event of Default. The agency and authority hereby granted and created constitute an agency coupled with an interest and are irrevocable. Secured Party shall not be bound to take any steps necessary to
preserve rights in any of the Collateral against any Person.

6. Delivery to Secured Party. If any
Collateral is received by Debtor after the occurrence of an Event of Default, Debtor shall deliver to Secured Party all such Collateral on the day received, with any checks being endorsed by Debtor in favor of Secured Party. Debtor shall not
commingle any such Collateral with any other funds, proceeds or monies of Debtor and shall keep such proceeds separate and apart from any other funds, proceeds or monies of Debtor and shall hold any such Collateral in trust for Secured Party until
same shall be paid over to Secured Party as agreed to herein.



Exhibit VI - iv



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7. Financing Statement Filings. Debtor authorizes Secured Party to
file, without notice to Debtor and with all appropriate jurisdictions, any and all financing statements under the Uniform Commercial Code as Secured Party deems necessary or desirable, without need of further authorization from Debtor, describing
the Collateral. Debtor will pay the cost of filing such financing statements, or the cost of filing or recording this Security Agreement, in all public offices where Secured Party deems such filing or recording to be necessary or desirable.

8. Transfer or Pledge of Collateral. Debtor shall not sell, assign, transfer, encumber, pledge,
hypothecate or otherwise dispose of any interest in the Collateral.

9. Jurisdiction of Organization.
Debtor shall not change its jurisdiction of organization without complying with the provisions of Section 2 of this Article E.

10. Expenses of Secured Party. Debtor shall pay to Secured Party all reasonable expenses and expenditures,
including, without limitation, reasonable attorneys fees and expenses, incurred or paid by Secured Party in exercising or protecting its interests, rights and remedies under this Security Agreement, subject to any limitations on certain of
such expenses or expenditures set forth in any of the Loan Documents. The amount of all such expenses and expenditures shall be due and payable by Debtor to Secured Party on demand and shall bear interest at the Default Rate.

11. Payments to Protect Collateral. Debtor shall pay, prior to delinquency, all taxes, charges, Liens (other than
Permitted Liens) and assessments, if any, against the Collateral, except any of the foregoing being contested in good faith and as to which adequate reserve in accordance with GAAP has been established. Upon Debtors failure to make such
payments, Secured Party shall have the right, but not the obligation, to pay the same and shall be the sole judge of the legality or validity thereof and the amount necessary to discharge the same. Any such payment made by Secured Party shall then
and thereupon be and become a part of the Secured Obligations and shall be payable by Debtor to Secured Party upon demand, with interest from the date advanced by Secured Party at the Default Rate.

12. Further Assurances. Debtor shall make, procure, execute and deliver all acts, things, writings and assurances
as Secured Party may at any time reasonably request, to protect, assure or enforce its interests, rights and remedies pursuant to this Security Agreement.

F. RIGHTS AND REMEDIES OF SECURED PARTY.

1. Remedies. Upon the occurrence and during the continuation of an Event of Default:

(a) Secured Party shall have the rights and remedies provided in the UCC or the Uniform Commercial Code in force in any
other applicable jurisdiction; and



Exhibit VI - v



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(b) in addition to, substitution for, modification of or conjunction with
the rights and remedies provided in clause (a) immediately above and in any of the Loan Documents, Secured Party may, subject to any applicable law:

(i) in its discretion, sell, assign, transfer and deliver the whole of the Collateral or any part thereof, or any
additions thereto, or substitutes therefor, as a whole or in parcels, in such order as Secured Party may elect, at public or private sale, through brokers or otherwise, with such notice or advertisement as may be required by the UCC or other
applicable Uniform Commercial Code;

(ii) bid and become purchaser at any public sale of the Collateral or any
part thereof;

(iii) apply the net proceeds of disposition of all or any part of the Collateral available for
application on the Secured Obligations in accordance with the Credit Agreement, and Debtor shall remain liable for any deficiency;

(iv) demand, collect, and receive all or any part of the Collateral thereafter due and payable to Debtor; and/or

(v) transfer to itself or to its nominee all or any part of the Collateral, and receive the monies, interest,
income or benefits attributable or accruing to the Collateral, and hold the same as security for the Secured Obligations, whether or not then due, in accordance with the Credit Agreement.

Secured Party shall be entitled to immediate possession of all books and records evidencing any Collateral and it or its representatives
shall have the authority to enter upon any premises upon which any of the same, or any Collateral, may be situated and remove the same therefrom without liability. The proceeds of any distribution after default available to satisfy the Secured
Obligations shall be applied to the Secured Obligations in accordance with the Credit Agreement.

Debtor specifically
understands and agrees that any sale by Secured Party of all or part of the Collateral pursuant to the terms of this Security Agreement may be effected by Secured Party at times and in manners which could result in the proceeds of such sale being
significantly and materially less than might have been received if such sale had occurred at different times or in different manners, and Debtor hereby releases Secured Party and its officers and representatives from and against any and all
obligations and liabilities arising out of or related to the timing or manner of any such sale.

2.
Sufficiency of Recitals. All recitals in any instrument of assignment or any other instrument executed by Secured Party incident to the sale, transfer, assignment or other disposition or utilization of the Collateral or any part thereof
hereunder shall be full proof of the matters stated therein and no other proof shall be requisite to establish full legal propriety of the sale or other action taken by Secured Party or of any fact, condition or thing incident thereto and all
prerequisites of such sale or other action shall be presumed conclusively to have been performed or to have occurred.



Exhibit VI - vi



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3. Subrogation. Notwithstanding a foreclosure sale, transfer,
assignment or other disposition of or upon any of the Collateral hereunder or exercise of any other remedy by Secured Party in connection with an Event of Default, Debtor shall thereby not be subrogated to any rights of Secured Party or any other
Secured Creditor against the Collateral or any other security for the Secured Obligations, nor shall Debtor be deemed to be the owner of any interest in any of the Secured Obligations, nor shall Debtor exercise any rights or remedies with respect to
the Collateral or any other security for the Secured Obligations until all Secured Obligations have been indefeasibly paid and fully performed and discharged.

4. Waivers. Debtor waives demand, notice, protest and all demands and notices of any action taken by Secured Party
under this Security Agreement, except as is specifically elsewhere provided herein and except as to notices which are required (and which may not be waived under the provisions of the UCC or other applicable Uniform Commercial Code), and any
indulgence by Secured Party, substitution for, exchange of, or release of the Collateral is hereby assented to and consented to by Debtor.

5. Negation of Liability. Secured Party shall not be responsible in any way for any depreciation or diminution in
the value or price of the Collateral and shall not have any duty or responsibility whatsoever to enforce collection of the Collateral by legal proceedings or otherwise, the sole duty of Secured Party being to receive collections, remittances and
payments on the Collateral if and when tendered to Secured Party, and at Secured Partys option to apply the amount or amounts so received, after deduction of any collection costs incurred, as payment upon the Secured Obligations in accordance
with the Credit Agreement.

G. GENERAL.

1. Security Agreement. The rights of Secured Party hereunder or the Secured Obligations may be assigned at any time
and from time to time, whether in whole or in part, and in such case the assignee shall be entitled to all of the rights, privileges and remedies granted in this Security Agreement to Secured Party or for the benefit thereof and Debtor will assert
no claims or defenses it may have against Secured Party or any other Secured Creditor against the assignee, except those granted in this Security Agreement.

2. Waiver. No delay of Secured Party in exercising any power or right shall operate as a waiver thereof; nor shall
any single or partial exercise of any power or right preclude other or further exercise thereof or the exercise of any other power or right. No waiver by Secured Party of any right hereunder or of any default by Debtor shall be binding upon Secured
Party unless in writing, and no failure by Secured Party to exercise any power or right hereunder or waiver of any default by Debtor shall operate as a waiver of any other or further exercise of such right or power or of any further default. The
exercise or beginning of the exercise by Secured Party of any one or more of such rights, powers or remedies shall not preclude the simultaneous or later exercise by Secured Party of any or all other such rights, powers or remedies. No indulgence by
Secured Party, or waiver of compliance with any provision hereof, shall be construed as a waiver of the right of Secured Party to subsequently require strict performance hereof by Debtor.



Exhibit VI - vii



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3. Release of Lien. Upon the indefeasible payment and performance in
full of the Secured Obligations, the termination of the commitments of the Lenders to make or maintain loans or participate in letters of credit pursuant to the Credit Agreement and the commitment of Secured Party to issue letters of credit pursuant
to the Credit Agreement, Secured Party shall promptly, at Debtors expense, execute and deliver release instruments and documents and take all further action that Debtor may reasonably request in order to release Secured Partys security
interest in the Collateral.

4. Remedies Cumulative. Each right, power and remedy of Secured Party as
provided for herein or in any other Loan Document, or which shall now or hereafter exist at law or in equity or by statute or otherwise, shall be cumulative and concurrent and shall be in addition to every other such right, power or remedy and the
exercise of any one or more of the remedies provided for herein shall not be construed as a waiver of any of the other remedies of Secured Party.

5. Parties in Interest. The terms Secured Party and Debtor as used in this instrument
include the respective heirs, executors, administrators, successors, representatives, trustees and permitted assigns of such parties.

6. Reasonable Notice. Notice mailed to Debtors address as set forth in the preamble of this Security
Agreement, or to Debtors most recent changed address on file with Secured Party, at least ten days prior to the related action, or if the UCC or other applicable Uniform Commercial Code specifies a longer period, such longer period prior
to the related action, shall be deemed reasonable.

7. Governing Law and Amendments.THIS SECURITY AGREEMENT AND THE SECURITY INTEREST GRANTED HEREBY IS GRANTED
IN, AND SHALL BE GOVERNED BY THE LAWS OF THE STATE OF
TEXAS AND THE LAWS OF THE UNITED STATES OF AMERICA APPLICABLE TO
TRANSACTIONS WITHIN THE STATE OF TEXAS, INCLUDING, WITHOUT LIMITATION, MATTERS OF
CONSTRUCTION, VALIDITY, ENFORCEMENT AND PERFORMANCE,and this Security Agreement may not be modified, altered or amended except in writing duly signed by an authorized
officer of Secured Party and by Debtor. Except as the context may otherwise require, any term used herein and defined in either Article 1 or Article 9 of the UCC or other applicable Uniform Commercial Code shall have the meaning given therein.

8. Notices. All notices, demands, requests and other communications required or permitted hereunder
shall be in writing and may be personally served or sent by mail, and if given by personal service, it shall be deemed to have been given upon receipt, and if sent by mail, it shall be deemed to have been given upon its deposit in the mail, postage
prepaid, registered or certified, return receipt requested, addressed to Debtor or Secured Party, as the case may be. For purposes hereof, the addresses of the parties to this Security Agreement shall be as set forth in the preamble hereof. Each of
Debtor and Secured Party shall have the right to change its address by designating a new address in a written notice to the other as herein required.



Exhibit VI - viii



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9. Invalidity of Certain Provisions. In the event any one or more of
the provisions contained in this Security Agreement shall, for any reason, be held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provision of this Security
Agreement.

10. Counterparts. This Security Agreement may be executed by the parties hereto in any
number of separate counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same instrument. In this regard, each of the parties hereto acknowledges that a counterpart of this Security Agreement
containing a set of counterpart execution pages reflecting the execution of each party hereto shall be sufficient to reflect the execution of this Security Agreement by each party hereto and shall constitute one instrument.

11. Benefits of Credit Agreement. In connection with its execution and acting hereunder, Secured Party is entitled
to all rights, privileges, protections, immunities, benefits and indemnities provided to it as agent under the Credit Agreement.

12. Conflict with Credit Agreement. In the event of a conflict between any provision of this Security Agreement and
a provision in the Credit Agreement, the provision of the Credit Agreement shall control; provided, however, the inclusion in this Security Agreement of a provision with respect to which there is no corresponding provision in the
Credit Agreement shall not constitute a conflict with any provision of the Credit Agreement.

IN WITNESS WHEREOF, Debtor
Secured Party and have executed this Security Agreement (Pledge) as of the date first above written.



DEBTOR: 
PRIMEENERGY CORPORATIONBy:Beverly A. Cummings
Executive Vice President, Treasurer and Chief
Financial Officer


(Signatures continue on following page)



Exhibit VI - ix



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SECURED PARTY: 
COMPASS BANK (successor in interest
to Guaranty Bank, FSB), as
AgentBy:Kathleen J. Bowen Senior
Vice President




Exhibit VI - x



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EXHIBIT VII

GUARANTY

This GUARANTY (this Guaranty) dated effective the 30th day of July, 2010, is by PRIMEENERGY MANAGEMENT CORPORATION, a
New York corporation, PRIME OPERATING COMPANY, a Texas corporation, EASTERN OIL WELL SERVICE COMPANY, a West Virginia corporation, SOUTHWEST OILFIELD CONSTRUCTION COMPANY, an Oklahoma corporation, and E O W S MIDLAND COMPANY, a Texas
corporation (collectively, the Guarantors), in favor of COMPASS BANK, an Alabama banking association, successor in interest to Guaranty Bank, FSB, a federal savings bank, in its capacity as agent (in such capacity, the
Agent) for the lenders from time to time parties to or bound by that certain Second Amended and Restated Credit Agreement dated effective of even date herewith, by and among PrimeEnergy Corporation, a Delaware corporation (the
Borrower), the Guarantors, such lenders (the Lenders) and the Agent (as amended, restated, supplemented or otherwise modified from time to time, the Agreement) and, under certain
circumstances, certain other parties, for the benefit of the Lenders and such other parties.

W I T
N E S S E T H:

WHEREAS, pursuant to the terms and conditions of the
Agreement, the Agent and the Lenders shall extend credit to or for the benefit of the Borrower;

WHEREAS, the Guarantors will
derive substantial direct and indirect benefits from the extensions of credit to or for the benefit of the Borrower pursuant to the Agreement; and

WHEREAS, the Guarantors have agreed to enter into this Guaranty as a material inducement to the Agent and the Lenders to extend credit to
the Borrower pursuant to the terms of the Agreement;

NOW, THEREFORE, in consideration of the premises and the mutual
covenants herein contained, the parties hereto hereby agree as follows:

ARTICLE I

DEFINITIONS AND INTERPRETATION

1.1 Terms Defined Above. As used in this Guaranty, each of the terms Agent, Agreement,
Borrower, Guarantors, Guaranty, and Lenders shall have the meaning assigned to such term hereinabove.

1.2 Terms Defined in Agreement. Each capitalized term used but not defined herein shall have the meaning assigned to such term in
the Agreement.

1.3 Additional Defined Terms.

Guaranteed Indebtedness shall mean the Obligations as to which payment is guaranteed by the Guarantor
pursuant to Section 2.1.



Exhibit VII - i



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Guarantor Claims shall have the meaning indicated in
Section 4.1.

1.4 References. References in this Guaranty to hereby, herein,
hereinafter, hereinabove, hereinbelow, hereof, hereunder and words of similar import shall be to this Guaranty in its entirety and not only to the particular article or section in which
such reference appears. Specific enumeration herein shall not exclude the general and, in such regard, the terms includes and including used herein shall be deemed to mean includes, without limitation, or
including, without limitation, as the case may be, where appropriate. Except as otherwise indicated, references in this Guaranty to statutes, sections, or regulations are to be construed as including all statutory or regulatory
provisions consolidating, amending, replacing, succeeding, or supplementing the statute, section, or regulation to which reference is made. References in this Guaranty to writing include printing, typing, lithography, facsimile
reproduction, and other means of reproducing words in a tangible visible form. References in this Guaranty to agreements and other contractual instruments shall be deemed to include all exhibits and appendices attached thereto and all subsequent
amendments and other modifications to such instruments, but only to the extent such amendments and other modifications are not prohibited by the terms of this Guaranty. References in this Guaranty to Persons include their respective successors and
permitted assigns.

1.5 Articles and Sections. This Guaranty, for convenience only, has been divided into articles and
sections; and it is understood that the rights and other legal relations of the parties hereto shall be determined from this instrument as an entirety and without regard to the aforesaid division into articles and sections and without regard to
headings prefixed to such articles or sections.

1.6 Number and Gender. Whenever the context requires, reference herein
made to the single number shall be understood to include the plural; and likewise, the plural shall be understood to include the singular. Definitions of terms defined in the singular or plural shall be equally applicable to the plural or singular,
as the case may be, unless otherwise indicated. Words denoting sex shall be construed to include the masculine, feminine and neuter, when such construction is appropriate; and specific enumeration shall not exclude the general but shall be construed
as cumulative.

ARTICLE II

GUARANTY

2.1 Guaranty. Each of the Guarantors hereby unconditionally guarantees the prompt payment and performance when due (whether at
stated maturity, by acceleration, or otherwise) of the Obligations and all renewals and extensions thereof.

2.2 Absolute,
Complete, and Continuing Guaranty. This is an absolute, unconditional, irrevocable, complete, and continuing Guaranty. It is expressly understood and provided that the liability of each of the Guarantors hereunder shall constitute the absolute
and unconditional obligation of such Guarantor. The Borrower, the Agent and the Lenders may, in accordance with the terms of the Agreement, increase, rearrange, extend, and/or renew all or any portion of the Obligations without notice to the
Guarantors; and in such event, each of the Guarantors shall remain fully bound hereunder for payment of the Guaranteed Indebtedness.



Exhibit VII - ii



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The obligations of the Guarantor hereunder shall not be released, impaired, or diminished by any amendment, modification, or alteration of the Agreement or any other Loan Document, except as may
be expressly provided in any such amendment, modification, or alteration. Each of the Guarantors shall remain liable under this Guaranty regardless of whether the Borrower or any other guarantors be found not liable on all or any part of the
Obligations for any reason, including insanity, minority, disability, bankruptcy, insolvency, death, liquidation, or dissolution, even though rendering all or any part of the Obligations void, unenforceable, or uncollectible as against the Borrower
or any other guarantors. This Guaranty shall continue to be effective or shall be reinstated, as the case may be, if at any time any payment of any of the Guaranteed Indebtedness is rescinded or must otherwise be returned by the Lenders upon the
insolvency, bankruptcy, or reorganization of the Borrower or otherwise, all as though such payment had not been made and will, thereupon, guarantee payment of such amount as to which refund or restitution has been made, together with interest
accruing thereon subsequent to the date of refund or restitution at the applicable rate under the Agreement and collection costs and fees (including reasonable attorneys fees) applicable thereto.

2.3 Liability Not Impaired. The liabilities and obligations of each of the Guarantors hereunder shall not be affected or impaired
by (a) the failure of any Lien intended to be granted or created to secure all or any part of the Obligations to be properly perfected or created or the unenforceability of any Lien for any other reason or (b) the subordination of any such
Lien to any other Lien.

2.4 Primary Liability. The liability of each of the Guarantors for the payment of the
Guaranteed Indebtedness shall be primary and not secondary to the liability of the Borrower and this Guaranty shall constitute a guarantee of payment and not a guarantee of collection.

2.5 Security; Additional Guarantees. Each of the Guarantors authorizes the Agent, without notice to or demand upon such Guarantor
and without affecting the liability of such Guarantor hereunder, (a) to take and hold security voluntarily provided by any Person as security for the payment of all or any portion of the Obligations, and to exchange, enforce, waive, and/or
release any such security; (b) to apply such security and direct the order or manner of sale thereof as the Agent in its discretion may determine; and (c) to obtain a guaranty of all or any portion of the Obligations from any one or more
other Persons and to enforce, waive, rearrange, modify, limit, or release at any time or times such other Persons from their obligations under such guaranties, whether with or without consideration.

2.6 Waivers. Each of the Guarantors waives any right to require the Agent to pursue any other remedy in the power of the Agent,
including to first (a) proceed against the Borrower and make all reasonable efforts at the collection of the Guaranteed Indebtedness from the Borrower or any other guarantors or Persons liable for all or any part of the Guaranteed Indebtedness
or (b) proceed against or exhaust any Collateral, prior to seeking payment by such Guarantor of the Guaranteed Indebtedness. Each of the Guarantors also waives, until one year following payment in full of the Obligations and the termination of
the obligation of the Lenders to make Loans to or for the benefit of the Borrower pursuant to the Agreement or any obligation of the Agent to issue Letters of Credit for the account of the Borrower pursuant to the Agreement, any right of such
Guarantor, upon satisfaction of the obligation of such Guarantor hereunder, to subrogation to any rights of the Lenders against the Borrower under the Agreement



Exhibit VII - iii



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or any other Loan Document. Each of the Guarantors further waives any and all rights and remedies of suretyship, including those it may have or be able to assert by reason of the provisions of
(i) Section 17.001 of the Texas Civil Practice and Remedies Code, Texas Rule of Civil Procedure 31 and (ii) Sections 51.003 through 51.005 of the Texas Property Code, relating to deficiency judgments. Each of the Guarantors waives any
defense arising by reason of any disability, lack of authority or power, or other defense of the Borrower or any other guarantors of all or any part of the Obligations. Each of the Guarantors expressly waives all notices of any kind, presentment for
payment, demand for payment, protest, notice of protest, notice of intent to accelerate maturity, notice of acceleration of maturity, dishonor, diligence, notice of any amendment of any Loan Document, notice of any adverse change in the financial
condition of the Borrower, notice of any adjustment, indulgence, forbearance, or compromise that might be granted or given by the Agent or the Lenders to the Borrower, and notice of acceptance of this Guaranty, acceptance on the part of the Agent
and the Lenders being conclusively presumed by the request for this Guaranty and the delivery of this Guaranty to the Agent. The liability and obligations of each of the Guarantors hereunder shall not be affected or impaired by any action or
inaction by the Agent in regard to any matter waived or notice of which is waived by such Guarantor in this Guaranty.

2.7
Pursuit of Remedies. The Agent may pursue any remedy without altering the obligations of any Guarantor hereunder and without liability to any Guarantor, even though the pursuit of such remedy may result in the loss by any Guarantor of rights
of subrogation or to proceed against others for reimbursement or contribution or any other right, and the Agent is not obligated to foreclose or otherwise seek remedies against any Collateral securing the Obligations prior to the enforcement of this
Guaranty.

2.8 Status of Borrower. Should the status of the Borrower change in any way, as a result of reorganization
or dissolution, any sale, lease, or transfer of any or all of the assets of the Borrower, any change in the shareholders or partners of the Borrower or otherwise, this Guaranty shall continue and shall cover the Guaranteed Indebtedness under the new
status. This Section shall not, however, be construed to authorize any action by the Borrower otherwise prohibited under the Agreement or any other Loan Document.

2.9 Independent Review; Solvency. No Guarantor is relying on the financial condition of the Borrower or any Property intended as
Collateral as an inducement to enter into this Guaranty. Each of the Guarantors acknowledges that it is not relying on any representations (oral or otherwise) of the Agent, any Lender or any other Person except as may be expressly described in this
Guaranty. As of the date hereof, and after giving effect to this Guaranty and the contingent obligations evidenced hereby, each of the Guarantors is and will be solvent, and has and will have property which, valued fairly, exceeds the obligations,
debts, and liabilities of such Guarantor, and has and will have Property sufficient to satisfy, repay, and discharge the same. In the event of the insolvency of any Guarantor, the Agent shall have the option to declare the Guaranteed Indebtedness
immediately due and payable from such Guarantor.

2.10 Enforcement Costs. If the Guaranteed Indebtedness is not paid by
a Guarantor when due, as required herein, and this Guaranty is placed in the hands of an attorney for collection or is enforced by suit or through probate or bankruptcy court or through any other judicial proceedings, such Guarantor shall pay to the
Agent, in addition to the amount of the Guaranteed Indebtedness, an amount equal to the reasonable attorneys fees and collection costs incurred by the Agent in the collection of the Guaranteed Indebtedness.



Exhibit VII - iv



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2.11 Joint and Several Liability. The liability of the Guarantors under this Guaranty
is joint and several.

ARTICLE III

REPRESENTATIONS AND WARRANTIES

To induce the Lenders to make Loans to or for the benefit of the Borrower and the Agent to issue Letters of Credit for the account of the
Borrower, each of the Guarantors has made the representations and warranties set forth in the Agreement.

ARTICLE IV

SUBORDINATION OF INDEBTEDNESS

4.1 Subordination of All Guarantor Claims. As used herein, the term Guarantor Claims shall mean all debts and
obligations of the Borrower to any of the Guarantors, whether such debts and obligations now exist or are hereafter incurred or arise, or whether the obligation be direct, contingent, primary, secondary, several, joint and several, or otherwise, and
irrespective of the Person or Persons in whose favor such debts or obligations be evidenced by note, contract, open account, or otherwise, and irrespective of the Person or Persons in whose favor such debts or obligations may, at their inception,
have been, or may hereafter be created, or the manner in which they have been or hereafter may be created, or the manner in which they have been or may be acquired by the relevant Guarantor. Except to the extent set forth and allowed under
Section 6.9 of the Agreement and to the extent of payments on Indebtedness permitted under Section 6.7(c) of the Agreement, until the Obligations shall be paid and satisfied in full and each Guarantor shall have performed all of its
obligations hereunder, no Guarantor shall receive or collect, directly or indirectly, from the Borrower any amount upon any Guarantor Claim owed to such Guarantor.

4.2 Claims in Bankruptcy. In the event of receivership, bankruptcy, reorganization, arrangement, debtors relief, or other
insolvency proceedings involving the Borrower, the Agent, acting for the Lenders, or any Lender shall have the right to prove its claim in any proceeding, so as to establish its rights hereunder and receive directly from the receiver, trustee or
other court custodian, dividends and payments which would otherwise be payable upon any Guarantor Claims. Each of the Guarantors hereby assigns such dividends and payments to the Agent, for the benefit of the Lenders. Should the Agent or any Lender
receive, for application upon the Obligations, any such dividend or payment which is otherwise payable to a Guarantor, and which, as between the Borrower and such Guarantor, shall constitute a credit upon the Guarantor Claims owing to such
Guarantor, then upon payment in full of the Obligations, such Guarantor shall become subrogated to the rights of the Agent or such Lender to the extent that such payments to the Agent or such Lender on the relevant Guarantor Claims have contributed
to the liquidation of the Obligations which would have been unpaid if the Agent or such Lender had not received dividends or payments upon the relevant Guarantor Claims.



Exhibit VII - v



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4.3 Payments Held in Trust. Except to the extent set forth and allowed under
Section 6.9 of the Agreement and to the extent of payments on Indebtedness permitted under Section 6.7(c) or Section 6.7(d) of the Agreement, in the event that, notwithstanding the provisions of Section 4.1 and
Section 4.2, any Guarantor should receive any funds, payments claims or distributions which are prohibited by the provisions of such Sections, such Guarantor agrees (a) to hold in trust for the Agent, for the benefit of the Lenders,
an amount equal to all funds, payments, claims or distributions so received, and (b) that it shall have absolutely no dominion over the amount of such funds, payments, claims or distributions except to pay them promptly to the Agent, for the
benefit of the Lenders; and such Guarantor covenants promptly to pay the same to the Agent, for the benefit of the Lenders.

4.4 Liens Subordinate. Each of the Guarantors agrees that, until the Obligations are paid in full, any Liens upon the
Borrowers assets securing payment of any Guarantor Claims owing to such Guarantor shall be and remain inferior and subordinate to any Liens upon the Borrowers assets securing payment of the Obligations, regardless of whether such
encumbrances in favor of such Guarantor or the Agent presently exist or are hereafter created or attach. Without the prior written consent of the Agent, no Guarantor, during the period in which any of the Obligations are outstanding, shall
(a) exercise or enforce any creditors right it might have against the Borrower, or (b) foreclose, repossess, sequester, or otherwise take steps or institute any action or proceeding (judicial or otherwise, including without
limitation the commencement of any liquidation, bankruptcy, rearrangement, debtors relief or insolvency proceeding) to enforce any lien, mortgages, deeds of trust, security interest, collateral rights, judgments or other encumbrances on assets
of the Borrower held by any Guarantor.

4.5 Notation of Records. All promissory notes and, upon the request of the
Agent, all accounts receivable ledgers or other evidence of any Guarantor Claims accepted by or held by any Guarantor shall contain a specific written notice thereon that the indebtedness evidenced thereby is subordinated under the terms of this
Guaranty.

ARTICLE V

MISCELLANEOUS

5.1 Survival of Representations, Warranties, and Covenants. All representations and warranties of the Guarantors and all covenants
and agreements herein made shall survive the making of the Loans and issuing of Letters of Credit and shall remain in force and effect so long as any Obligation is outstanding or there exists any commitment under the Agreement to make Loans or issue
Letters of Credit.

5.2 Notices and Other Communications. Except as to oral notices expressly authorized herein, which
oral notices shall be confirmed promptly in writing, all notices, requests, and communications hereunder shall be in writing (including by facsimile). Unless otherwise expressly provided herein, any such notice, request, demand, or other
communication shall be deemed to have been duly given or made when delivered by hand, or, in the case of delivery by mail, two Business Days after deposit in the mail, certified mail, return receipt requested, postage prepaid, or, in the case of
facsimile notice, when receipt thereof is acknowledged orally or by written confirmation report, addressed to the address of the relevant party for notices under the Agreement.



Exhibit VII - vi



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5.3 Parties in Interest. Subject to any applicable restrictions contained herein or
in the Agreement, all covenants and agreements herein contained by or on behalf of any Guarantor or the Agent shall be binding upon such Guarantor or the Agent, as the case may be, and their respective successors and permitted assigns.

5.4 Rights of Third Parties. All provisions herein are imposed solely and exclusively for the benefit of the Agent and its
successors and assigns. No other Person shall have any right, benefit, priority, or interest hereunder or as a result hereof or have standing to require satisfaction of provisions hereof in accordance with their terms.

5.5 No Waiver; Rights Cumulative. No course of dealing on the part of the Agent, its officers or employees, nor any failure or
delay by the Agent with respect to exercising any of its rights under the Agreement or any other Loan Document (including this Guaranty) shall operate as a waiver thereof. The rights of the Agent under the Agreement and the other Loan Documents
(including this Guaranty) shall be cumulative and the exercise or partial exercise of any such right shall not preclude the exercise of any other right.

5.6 Severability. In the event any one or more of the provisions contained in this Guaranty shall be held to be invalid, illegal,
or unenforceable in any respect, such invalidity, illegality, or unenforceability shall not affect any other provision of this Guaranty.

5.7 Amendments; Waivers. Neither this Guaranty nor any provision hereof may be amended, waived, discharged, or terminated orally,
but only by an instrument in writing signed by the party against whom enforcement of the amendment, waiver, discharge, or termination is sought.

5.8 Review of Guaranty. This Guaranty was reviewed by each Guarantor, and each Guarantor acknowledges and agrees that it
understands fully all of the terms of this Guaranty and the consequences and implications of its execution of this Guaranty and has been afforded an opportunity to have this Guaranty reviewed by an attorney and such other Persons as desired and to
discuss the terms, consequences, and implications of this Guaranty with such attorney and other Persons.

5.9 Payments.
All amounts becoming payable by any Guarantor under this Guaranty shall be payable to the Agent at its office as set forth in the Agreement, and shall be due and payable within two Business Days of written demand.

5.10 Governing Law. This Guaranty and all issues arising in connection herewith and the transactions contemplated hereby
shall be construed in accordance with and governed by the laws of the State of Texas, without giving effect to principles thereof relating to conflicts of law.

5.11 Counterparts. For the convenience of the parties, this Guaranty may be executed in multiple counterparts and by different
parties hereto in separate counterparts, each of which for all purposes shall be deemed to be an original, and all of which together shall constitute one and the same Guaranty, and shall be enforceable as of the date hereof upon the execution of one
or more counterparts hereof by each of the parties hereto. In this regard, each of the parties hereto acknowledges that a counterpart of this Guaranty containing a set of counterpart execution pages reflecting the execution of each party hereto
shall be sufficient to reflect the execution of this Guaranty by each party hereto and shall constitute one instrument.



Exhibit VII - vii



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5.12 Conflict with Agreement. In the event of a conflict between any provision
of this Guaranty and a provision of the Agreement, the provision of the Agreement shall control; provided, however, the inclusion in this Guaranty of a provision with respect to which there is no corresponding provision in the
Agreement shall not constitute a conflict with any provision of the Agreement.

(Signatures appear on following
pages)



Exhibit VII - viii



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IN WITNESS WHEREOF, this Guaranty is executed as of the date first above written.



GUARANTORS: 
PRIMEENERGY MANAGEMENT CORPORATIONBy:Beverly A. Cummings
Executive Vice President and Treasurer




PRIME OPERATING COMPANYBy:Beverly A. Cummings
Executive Vice President and Treasurer




EASTERN OIL WELL SERVICE COMPANYBy:Beverly A. Cummings
Executive Vice President and Treasurer




SOUTHWEST OILFIELD
CONSTRUCTION COMPANYBy:Beverly A. Cummings
Executive Vice President and Treasurer


(Signatures continue on following pages)



Exhibit VII - ix



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E O W S MIDLAND COMPANYBy:Beverly A. Cummings
Executive Vice President and Treasurer




(Signatures continue on following page)



Exhibit VII - x



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AGENT: 
COMPASS BANK (successor in interest
to Guaranty Bank, FSB), as
AgentBy:Kathleen J. Bowen Senior
Vice President




Exhibit VII - xi