Exhibit 99.2



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| |  | LOGO                                                                                                                                 
| |  | Gaffney, Cline & Associates, Inc.
 1300 Post Oak Blvd., Suite 1000
Houston, TX 77056 Telephone: +1 713 850
9955 www.gaffney-cline.com



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|DAA/gjh/C1900.02/gcah.99.13 |  | March 26, 2013

Mr. Javier Sanagua

Director de Reservas

YPF S.A.

Macacha Güemes 515

C1106BKK Buenos Aires

Argentina

Hydrocarbon
Reserve Statement for YPF S.A

Loma La Lata Area

as of December 31, 2012

Dear Mr. Javier Sanagua,

This reserve statement has been prepared by
Gaffney, Cline & Associates (GCA) and issued on March 26, 2013 at the request of YPF S.A. (YPF), operator and 100% interest participant in the Loma La Lata Area, Neuquén Province, Argentina.

GCA has conducted an independent audit examination of the hydrocarbon liquid and natural gas reserves of the Lotena, Sierras Blancas,
Quintuco and Vaca Muerta formations, as of December 31, 2012. This report is intended for inclusion in YPFs filings (20-F, F-3) with the United States Securities and Exchange Commission.

On the basis of technical and other information made available to us concerning these property units, we hereby provide the reserve
statements given in the table below.

Statement of Remaining Hydrocarbon Volumes

Loma La Lata Area, Neuquén Province, Argentina

As of December 31, 2012



|             |  |                           |     |  |                    |  |      |               |  |  |          |  |  |  |      | 
|------------ |  | ------------------------- | --- |  | ------------------ |  | ---- | ------------- |  |  | -------- |  |  |  | ---- | 
|             |  | Gross (100%) FieldVolumes |     |  | Reserves Net toYPF | 
|             |  | Liquids(MMm3)             |     |  | Gas(Bm3)           |  |      | Liquids(MMm3) |  |  | Gas(Bm3) | 
|Proved       |  |                           |     |  |                    |  |      |               |  |  |          |  |  |  |      | 
|Developed    |  |                           | 6.2 |  |                    |  | 17.4 |               |  |  | 6.2      |  |  |  | 17.4 | 
|Undeveloped  |  |                           | 2.5 |  |                    |  | 7.1  |               |  |  | 2.5      |  |  |  | 7.1  | 
|             |  |                           |     |  |                    |  |      |               |  |  |          |  |  |  |      | 
|Total Proved |  |                           | 8.7 |  |                    |  | 24.5 |               |  |  | 8.7      |  |  |  | 24.5 | 
|             |  |                           |     |  |                    |  |      |               |  |  |          |  |  |  |      | 



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Hydrocarbon liquid volumes represent crude oil condensate; gasoline
and natural gas liquids (NGL) estimated to be recovered during field separation and plant processing and are reported in millions of stock tank cubic meters. Natural gas volumes represent expected gas sales, and are reported in billion (109) cubic meters (at standard conditions of 15 degrees Celsius and
1 atmosphere). The volumes have not been reduced for fuel usage in the field. Based on the interpretation that Argentine royalties are a financial obligation or substantially equivalent to a production or similar tax, royalties payable to the
provinces have not been deducted from the reported volumes.

The gas consumption in the field is approximately 3.8% of the
produced gas.

Gas reserves sales volumes are based on firm and existing gas contracts, or on the reasonable expectation that
any such existing gas sales contracts will be renewed on similar terms in the future.

The tables below contain the reserves
for each formation. Liquid volumes are reported here in thousands of stock tank cubic meters and natural gas in million standard cubic meters (at standard conditions of 15 degrees Celsius and 1 atmosphere)

Statement Net to YPF

Loma La Lata Area

as of December 31, 2012

Liquid Hydrocarbon Volumes



|                |                |        |       |                   |  |  |            |  |  |  |       |  |  |  |       | 
|--------------- | -------------- | ------ | ----- | ----------------- |  |  | ---------- |  |  |  | ----- |  |  |  | ----- | 
|Area            |                | Proved |      
|                | Developed      |        |       | Undeveloped(Mm3)  |  |  | Total(Mm3) | 
|                | Producing(Mm3) |        |       | NonProducing(Mm3) |  |  |           
|Lotena          |                |        |      |                   |  |  |           |  |  |  |      |  |  |  |      | 
|Quintuco        |                |        | 175   |                   |  |  |           |  |  |  | 2     |  |  |  | 177   | 
|Sierras Blancas |                |        | 5,360 |                   |  |  | 78         |  |  |  | 2,100 |  |  |  | 7,538 | 
|Vaca Muerta     |                |        | 512   |                   |  |  | 26         |  |  |  | 432   |  |  |  | 970   | 

Natural Gas Volumes



|                |  |                 |        |  |                    |  |     |             |  |  |       |  |  |  |        | 
|--------------- |  | --------------- | ------ |  | ------------------ |  | --- | ----------- |  |  | ----- |  |  |  | ------ | 
|                |  | Proved          |       
|                |  | Developed       |        |  | Undeveloped(MMm3)  |  |     | Total(MMm3) | 
|Area            |  | Producing(MMm3) |        |  | NonProducing(MMm3) |  |     |            
|Lotena          |  |                 | 516    |  |                    |  |    |             |  |  | 622   |  |  |  | 1,138  | 
|Quintuco        |  |                 | 46     |  |                    |  |    |             |  |  |      |  |  |  | 46     | 
|Sierras Blancas |  |                 | 16,419 |  |                    |  | 241 |             |  |  | 6,402 |  |  |  | 23,062 | 
|Vaca Muerta     |  |                 | 115    |  |                    |  | 6   |             |  |  | 97    |  |  |  | 218    | 



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It is our understanding that the proved reserves estimated in this report constitute
approximately 21.3% percent of YPFs Proved Reserves. It is also our understanding that the Proved Undeveloped Reserves estimated in this report constitute approximately 29.7% percent of all YPFs Proved Undeveloped Reserves as of
December 31, 2012. These proportions are on a barrel oil equivalent (BOE) basis. GCA is not in a position to verify this statement as it was not requested to review YPFs other oil and gas assets. Our study was completed on
February 20, 2013.

GCAs audit of the YPF reserves estimates was based on decline curve analysis to extrapolate the
production of existing wells or elaborate type curves to estimate future production from the locations proposed by YPF. Geological information, material balance, fluid laboratory tests and other pertinent information was used to assess the reserves
estimates and the classification/categorization of the proposed development plan.

The audit examination was based on reserve
estimates and other information provided by YPF to GCA through January 1, 2013 and included such tests, procedures and adjustments as were considered necessary under the circumstances to prepare the report. All questions that arose during the
course of the audit process were resolved to our satisfaction. GCA believes that the assumptions, data, methods and procedures used in connection with the preparation of this report are appropriate for the purpose served by the report.

The economic tests for the December 31, 2012 Proved Reserve volumes were based on realized crude oil, condensate, NGL and average
gas sales prices as shown in the following table, as advised by YPF. A prior twelve-month first-day-of-the-month average price for West Texas Intermediate (WTI) crude of US$94.68/Bbl serves as the foundation for the oil, condensate and gasoline
price. YPF is subject to extensive regulations relating to the oil and gas industry in Argentina which include specific natural gas market regulations as well as hydrocarbon export taxes that apply until 2017 according to Law 26,217, all of which
affect the realized prices of oil and other products in the domestic market. As a result, crude oil prices used to determine reserves are set at the beginning of every month until 2012, for crude oils of different quality produced by YPF,
considering the realized prices for crude oils of such quality in the domestic market, taking into account the effects of Law 26,217. Additionally, a significant portion of the Argentine gas market is regulated. Natural gas prices for the
residential and power generation segments, as well as natural gas for vehicles, are regulated by the government. Natural gas prices for industrial consumers are negotiated by market participants on a private basis. As a result, there are no
benchmark market natural gas prices available in Argentina. GCA audited and accepted the methodology and prices used by YPF in estimating the reserves in Argentina. In addition, YPF increments the crude oil, condensate and gasoline price in 2017 due
to the scheduled expiration of the export retention tax mentioned above. Caution is advised in this regard as the export tax has been scheduled to expire several times in the recent past but extended as the deadline approached. Maintaining the
current price would no doubt have an impact on the reserves estimates. Summary of prices used to the economic test for proved reserves are stated in the table below.



|                                                   |      |  |                                  |  |      |             |  |  |                 |  |  |  |     | 
|-------------------------------------------------- | ---- |  | -------------------------------- |  | ---- | ----------- |  |  | --------------- |  |  |  | --- | 
|Loma La Lata Area Price Based on WTI 94.68 US$/Bbl |     
|                                                   |      | 
|Crude
OilCondensateGasoline2013-2016               |      |  | Crude
OilCondensateGasoline2017+ |  |      | NGL - Plant |  |  | NaturalGas2013+ | 
|US$/Bbl                                            |      |  | US$/Bbl                          |  |      | US$/Bbl     |  |  | US$/MMBTU       | 
|                                                   | 74.2 |  |                                  |  | 93.3 |             |  |  | 23.7            |  |  |  | 2.3 | 



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Future capital costs were derived from development program forecasts prepared by YPF
for the fields (Lotena, Sierras Blancas Quintuco and Vaca Muerta). Recent historical operating expense data were utilized as the basis for operating cost projections. GCA has found that YPF has projected sufficient capital investments and operating
expenses to produce economically the projected volumes.

It is GCAs opinion that the estimates of total remaining
recoverable hydrocarbon liquid and gas volumes at December 31, 2012, are, in the aggregate, reasonable and the reserves categorization is appropriate and consistent with the definitions for reserves set out in 17-CFR Part 210 Rule 4-10(a) of
Regulation S-X of the United States Securities and Exchange Commission (as set out in Appendix II). GCA concludes that the methodologies employed by YPF in the derivation of the volume estimates are appropriate and that the quality of the data
relied upon, the depth and thoroughness of the estimation process is adequate.

GCA is not aware of any potential changes in
regulations applicable to these fields that could affect the ability of YPF to produce the estimated reserves.

This
assessment has been conducted within the context of GCAs understanding of YPFs petroleum property rights as represented by YPFs management. GCA is not in a position to attest to property title, financial interest relationships or
encumbrances thereon for any part of the appraised properties or interests.

There are numerous uncertainties inherent in
estimating reserves and resources, and in projecting future production, development expenditures, operating expenses and cash flows. Oil and gas reserve engineering and resource assessment must be recognized as a subjective process of estimating
subsurface accumulations of oil and gas that cannot be measured in an exact way. Estimates of oil and gas reserves or resources prepared by other parties may differ, perhaps materially, from those contained within this report. The accuracy of any
reserve or resource estimate is a function of the quality of the available data and of engineering and geological interpretation. Results of drilling, testing and production that post-date the preparation of the estimates may justify revisions, some
or all of which may be material. Accordingly, reserve and resource estimates are often different from the quantities of oil and gas that are ultimately recovered, and the timing and cost of those volumes that are recovered may vary from that
assumed.

For this assignment, GCA served as independent reserve auditor/evaluator. The firms officers and employees
have no direct or indirect interest holdings in the property units evaluated. GCAs remuneration was not in any way contingent on reported reserve estimates. The qualifications of the technical person primarily responsible for overseeing this
audit are included in Appendix I.

This report has been prepared at the request of YPF regarding assets it holds in Argentina
and is for inclusion in YPFs filings with the United States Securities and Exchange Commission.



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YPF will obtain GCAs prior written or email approval for the use with third
parties and context of the use with third parties of any results, statements or opinions expressed by GCA to YPF, which are attributed to GCA. Such requirement of approval shall include, but not be confined to, statements or references in documents
of a public or semi-public nature such as loan agreements, prospectuses, reserve statements, websites, press releases, etc.

Yours sincerely

Gaffney, Cline & Associates



LOGO

Project Manager - Daniel Amitrano

Lead Reservoir and Petroleum Engineer



LOGO

Peer Reviewer - David K. Morgan

Senior Technical Manager

Enclosures:



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|------------ |  | ---------------------------
|Appendix I   |  | Statement of Qualifications
|Appendix II  |  | SEC Reserve Definitions    
|Appendix III |  | Glossary                   



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APPENDIX I

STATEMENT OF QUALIFICATIONS



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Statement of Qualifications

D. K. Morgan

D. K. Morgan is one of GCAs Senior Technical Mangers and was responsible for overseeing the preparation of the audit. Mr. Morgan has over 44 years of diversified international industry
experience mainly in reservoir-engineering, geology, reserves estimates, project development, economics and training in the assessment, classification and reporting of reserves and resources. Over the past 5 years he has been responsible for project
review and oversight for GCAs Houston office as it pertains to exploration and production activities including the reserves audits conducted on behalf of Repsol YPF S.A. and YPF S.A. He is a member of the Society of Petroleum Engineers (SPE)
and holds a petroleum engineering degree from Marietta College.



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APPENDIX II

SEC RESERVE DEFINITIONS



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SEC DEFINITIONS FOR OIL AND GAS RESERVES

Proved Oil and Gas Reserves

Proved oil and gas reserves are the estimated quantities of crude oil, natural gas and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable in
future years from known reservoirs under existing economic and operating conditions, i.e., prices and costs as of the date the estimate is made. Prices include consideration of changes in existing prices provided only by contractual arrangements,
but not on escalations based upon future conditions.



| | (i) | Reservoirs are considered proved if economic producibility is supported by either actual production or conclusive formation tests. The area of a reservoir considered
proved includes (A) that portion delineated by drilling and defined by gas-oil and/or oil-water contacts, if any; and (B) the immediately adjoining portions not yet drilled, but which can be reasonably judged as economically productive on
the basis of available geological and engineering data. In the absence of information on fluid contacts, the lowest known structural occurrence of hydrocarbons controls the lower proved limit of the reservoir.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | Reserves which can be produced economically through application of improved recovery techniques (such as fluid injection) are included in the proved
classification when successful testing by a pilot project, or the operation of an installed program in the reservoir, provides support for the engineering analysis on which the project or program was based.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | Estimates of proved reserves do not include the following: (A) oil that may become available from know reservoirs, but is classified separately as indicated
additional reserves; (B) crude oil, natural gas and natural gas liquids, the recovery of which is subject to reasonable doubt because of uncertainty as to geology, reservoir characteristics, or economic factors: (C) crude oil,
natural gas, and natural gas liquids that may occur in undrilled prospects; and (D) crude oil, natural gas and natural gas liquids that may be recovered from oil shales, coal, gilsonite and other such sources.
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Proved Developed Oil and Gas Reserves

Proved developed oil and gas reserves that can be expected to be recovered through existing wells with existing equipment and operating methods. Additional oil and gas expected to be obtained through the
application of fluid injection or other improved recovery techniques for supplementing the natural forces and mechanisms of primary recovery should be included as proved developed reserves only after testing by a pilot project or after
the operation of an installed program has confirmed through production response that increased recovery will be achieved.



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Proved Undeveloped Reserves

Proved undeveloped oil and gas reserves are reserves that are expected to be recovered from new wells on undrilled acreage, or from
existing wells where a relatively major expenditure is required for recompletion. Reserves or undrilled acreage shall be limited to those drilling units offsetting productive units that are reasonably certain of production when drilled. Proved
reserves for other undrilled units can be claimed only where it can be demonstrated with certainty that there is continuity of production from the existing productive formation. Under no circumstances should estimates for proved undeveloped reserves
be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual tests in the area and in the same reservoir.



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APPENDIX III

GLOSSARY





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GLOSSARY

List of Standard Oil Industry Terms and Abbreviations



|              |  |                                                             
|------------- |  | ------------------------------------------------------------
|ABEX          |  | Abandonment Expenditure                                     
|ACQ           |  | Annual Contract Quantity                                    
|°API          |  | Degrees API (American Petroleum Institute)                  
|AAPG          |  | American Association of Petroleum Geologists                
|AVO           |  | Amplitude versus Offset                                     
|A$            |  | Australian Dollars                                          
|B             |  | Billion (109)                                               
|Bbl           |  | Barrels                                                     
|/Bbl          |  | per barrel                                                  
|BBbl          |  | Billion Barrels                                             
|BHA           |  | Bottom Hole Assembly                                        
|BHC           |  | Bottom Hole Compensated                                     
|Bscf or Bcf   |  | Billion standard cubic feet                                 
|Bscfd or Bcfd |  | Billion standard cubic feet per day                         
|Bm3           |  | Billion cubic metres                                        
|bcpd          |  | Barrels of condensate per day                               
|BHP           |  | Bottom Hole Pressure                                        
|blpd          |  | Barrels of liquid per day                                   
|bpd           |  | Barrels per day                                             
|boe           |  | Barrels of oil equivalent @ xxx mcf/Bbl                     
|boepd         |  | Barrels of oil equivalent per day @ xxx mcf/Bbl             
|BOP           |  | Blow Out Preventer                                          
|bopd          |  | Barrels oil per day                                         
|bwpd          |  | Barrels of water per day                                    
|BS&W          |  | Bottom sediment and water                                   
|BTU           |  | British Thermal Units                                       
|bwpd          |  | Barrels water per day                                       
|CBM           |  | Coal Bed Methane                                            
|CO2           |  | Carbon Dioxide                                              
|CAPEX         |  | Capital Expenditure                                         
|CCGT          |  | Combined Cycle Gas Turbine                                  
|cm            |  | centimetres                                                 
|CMM           |  | Coal Mine Methane                                           
|CNG           |  | Compressed Natural Gas                                      
|Cp            |  | Centipoise (a measure of viscosity)                         
|CSG           |  | Coal Seam Gas                                               
|CT            |  | Corporation Tax                                             
|DCQ           |  | Daily Contract Quantity                                     
|Deg C         |  | Degrees Celsius                                             
|Deg F         |  | Degrees Fahrenheit                                          
|DHI           |  | Direct Hydrocarbon Indicator                                
|DST           |  | Drill Stem Test                                             
|DWT           |  | Dead-weight ton                                             
|E&A           |  | Exploration & Appraisal                                     
|E&P           |  | Exploration and Production                                  
|EBIT          |  | Earnings before Interest and Tax                            
|EBITDA        |  | Earnings before interest, tax, depreciation and amortisation
|EI            |  | Entitlement Interest                                        
|EIA           |  | Environmental Impact Assessment                             
|EMV           |  | Expected Monetary Value                                     





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|              |  |                                                                |  | 
|------------- |  | -------------------------------------------------------------- |  | 
|EOR           |  | Enhanced Oil Recovery                                         
|EUR           |  | Estimated Ultimate Recovery                                   
|FDP           |  | Field Development Plan                                        
|FEED          |  | Front End Engineering and Design                              
|FPSO          |  | Floating Production, Storage and Offloading                   
|FSO           |  | Floating Storage and Offloading                               
|ft            |  | Foot/feet                                                     
|Fx            |  | Foreign Exchange Rate                                         
|g             |  | gram                                                          
|g/cc          |  | grams per cubic centimetre                                    
|gal           |  | gallon                                                        
|gal/d         |  | gallons per day                                               
|G&A           |  | General and Administrative costs                              
|GBP           |  | Pounds Sterling                                               
|GDT           |  | Gas Down to                                                   
|GIIP          |  | Gas initially in place                                        
|GJ            |  | Gigajoules (one billion Joules)                               
|GOR           |  | Gas Oil Ratio                                                 
|GTL           |  | Gas to Liquids                                                
|GWC           |  | Gas water contact                                             
|HDT           |  | Hydrocarbons Down to                                          
|HSE           |  | Health, Safety and Environment                                
|HSFO          |  | High Sulphur Fuel Oil                                         
|HUT           |  | Hydrocarbons up to                                            
|H2S           |  | Hydrogen Sulphide                                             
|IOR           |  | Improved Oil Recovery                                         
|IPP           |  | Independent Power Producer                                    
|IRR           |  | Internal Rate of Return                                       
|J             |  | Joule (Metric measurement of energy) 1 kilojoule = 0.9478 BTU)
|k             |  | Permeability                                                  
|KB            |  | Kelly Bushing                                                 
|KJ            |  | Kilojoules (one Thousand Joules)                              
|kl            |  | Kilolitres                                                    
|km            |  | Kilometres                                                    
|km2           |  | Square kilometres                                             
|kPa           |  | Thousands of Pascals (measurement of pressure)                
|KW            |  | Kilowatt                                                      
|KWh           |  | Kilowatt hour                                                 
|LKG           |  | Lowest Known Gas                                              
|LKH           |  | Lowest Known Hydrocarbons                                     
|LKO           |  | Lowest Known Oil                                              
|LNG           |  | Liquefied Natural Gas                                         
|LoF           |  | Life of Field                                                 
|LPG           |  | Liquefied Petroleum Gas                                       
|LTI           |  | Lost Time Injury                                              
|LWD           |  | Logging while drilling                                        
|m             |  | Metres                                                        
|M             |  | Thousand                                                      
|m3            |  | Cubic metres                                                  
|Mcf or Mscf   |  | Thousand standard cubic feet                                  
|MCM           |  | Management Committee Meeting                                  
|MMcf or MMscf |  | Million standard cubic feet                                   



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|            |  |                                                                   
|----------- |  | ------------------------------------------------------------------
|m3d         |  | Cubic metres per day                                              
|mD          |  | Measure of Permeability in millidarcies                           
|MD          |  | Measured Depth                                                    
|MDT         |  | Modular Dynamic Tester                                            
|Mean        |  | Arithmetic average of a set of numbers                            
|Median      |  | Middle value in a set of values                                   
|MFT         |  | Multi Formation Tester                                            
|mg/l        |  | milligrams per litre                                              
|MJ          |  | Megajoules (One Million Joules)                                   
|Mm3         |  | Thousand Cubic metres                                             
|Mm3d        |  | Thousand Cubic metres per day                                     
|MM          |  | Million                                                           
|MMBbl       |  | Millions of barrels                                               
|MMBTU       |  | Millions of British Thermal Units                                 
|Mode        |  | Value that exists most frequently in a set of values = most likely
|Mscfd       |  | Thousand standard cubic feet per day                              
|MMscfd      |  | Million standard cubic feet per day                               
|MW          |  | Megawatt                                                          
|MWD         |  | Measuring While Drilling                                          
|MWh         |  | Megawatt hour                                                     
|mya         |  | Million years ago                                                 
|NGL         |  | Natural Gas Liquids                                               
|N2          |  | Nitrogen                                                          
|NPV         |  | Net Present Value                                                 
|OBM         |  | Oil Based Mud                                                     
|OCM         |  | Operating Committee Meeting                                       
|ODT         |  | Oil down to                                                       
|OPEX        |  | Operating Expenditure                                             
|OWC         |  | Oil Water Contact                                                 
|p.a.        |  | Per annum                                                         
|Pa          |  | Pascals (metric measurement of pressure)                          
|P&A         |  | Plugged and Abandoned                                             
|PDP         |  | Proved Developed Producing                                        
|PI          |  | Productivity Index                                                
|PJ          |  | Petajoules (1015Joules)                                           
|PSDM        |  | Post Stack Depth Migration                                        
|psi         |  | Pounds per square inch                                            
|psia        |  | Pounds per square inch absolute                                   
|psig        |  | Pounds per square inch gauge                                      
|PUD         |  | Proved Undeveloped                                                
|PVT         |  | Pressure volume temperature                                       
|P10         |  | 10% Probability                                                   
|P50         |  | 50% Probability                                                   
|P90         |  | 90% Probability                                                   
|Rf          |  | Recovery factor                                                   
|RFT         |  | Repeat Formation Tester                                           
|RT          |  | Rotary Table                                                      
|Rw          |  | Resistivity of water                                              
|SCAL        |  | Special core analysis                                             
|cf or scf   |  | Standard Cubic Feet                                               
|cfd or scfd |  | Standard Cubic Feet per day                                       
|scf/ton     |  | Standard cubic foot per ton                                       
|SL          |  | Straight line (for depreciation)                                  



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|            |  |                                                    
|----------- |  | ---------------------------------------------------
|so          |  | Oil Saturation                                     
|SPE         |  | Society of Petroleum Engineers                     
|SPEE        |  | Society of Petroleum Evaluation Engineers          
|ss          |  | Subsea                                             
|stb         |  | Stock tank barrel                                  
|STOIIP      |  | Stock tank oil initially in place                  
|sw          |  | Water Saturation                                   
|T           |  | Tonnes                                             
|TD          |  | Total Depth                                        
|Te          |  | Tonnes equivalent                                  
|THP         |  | Tubing Head Pressure                               
|TJ          |  | Terajoules (1012Joules)                            
|Tscf or Tcf |  | Trillion standard cubic feet                       
|TCM         |  | Technical Committee Meeting                        
|TOC         |  | Total Organic Carbon                               
|TOP         |  | Take or Pay                                        
|Tpd         |  | Tonnes per day                                     
|TVD         |  | True Vertical Depth                                
|TVDss       |  | True Vertical Depth Subsea                         
|USGS        |  | United States Geological Survey                    
|US$         |  | United States Dollar                               
|VSP         |  | Vertical Seismic Profiling                         
|WC          |  | Water Cut                                          
|WI          |  | Working Interest                                   
|WPC         |  | World Petroleum Council                            
|WTI         |  | West Texas Intermediate                            
|wt%         |  | Weight percent                                     
|1H05        |  | First half (6 months) of 2005 (example of date)    
|2Q06        |  | Second quarter (3 months) of 2006 (example of date)
|2D          |  | Two dimensional                                    
|3D          |  | Three dimensional                                  
|4D          |  | Four dimensional                                   
|1P          |  | Proved Reserves                                    
|2P          |  | Proved plus Probable Reserves                      
|3P          |  | Proved plus Probable plus Possible Reserves        
|%           |  | Percentage