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1 Deepwater Project R February, 2011 Aberdeen, Scotland UK

2 Content Background Deepwater Exploration Lakach Project (Production) Technical Challenges Contracting scheme Conclusions

3 PEMEX, Mexico s National Oil Company PEMEX Corporate Exploration & Production (PEP) Refining Natural Gas & Basic Petrochemicals Petrochemicals Exploration & Production of oil and gas Refinery and domestic sales of refined products Domestic sales of natural gas, LPG and basic petrochemical products Petrochemical industry and derivated products Upstream Downstream

4 PEP Organization Chart VALUE GENERATION UNIT ESPECIALIZED SERVICES TECHNICAL AREAS SUPPORT PRESIDENT & CEO H S E Internal Control Office Exploration Technical management Planning & Assessment Administration & Finance Distribution & Trading ONSHORE OFFSHORE NORTH SOUTH NORTHEAST SOUTHWEST FIELD DEVELOPMENT Maintenance & Logistics Drilling Services & Construction New execution models I T

5 PEMEX PEP Regional Operation Regional operation U.S.A. Gulf of México Southwest Offshore Region Northern Region Northeast Offshore Region Pacific Ocean N Southern Region O E Production S Km Region Oil (Mbd) Gas (bcfd) Northern 93 2,537 Southern 498 1,600 NE & SW Offshore Natural gas liquids 2, Mbd 2, Daily annual average Source: January 22nd 2010;

6 Field Development Vice presidency VALUE GENERATION UNIT ESPECIALIZED SERVICES TECHNICAL AREAS SUPPORT URCI-M VICE PRESIDENT Field Development External Affairs & Communication Planning & Assessment Finance & Administration Tsimin- Xux Light Oil Ayatsil Tekel Heavy Oil Lakach Wet Gas(Deepwater) Maintenance & Logistics Drilling H S E Services & construction Production Projects I T

7 Content Background Deepwater Exploration Lakach Project (Production) Technical Challenges Contracting scheme Conclusions

8 Upstream Exploration Strategy: Deepwater Area Risk Water depth Water depth (m) ( ft) 1. Perdido folded belt Low-Moderate >2000 > Oreos Moderate-High Nancan High Jaca-Patini Moderate-High Nox-Hux Moderate Temoa High Han Moderate-High Holok Low-moderate (Western) High (Eastern) Lipax Moderate North Deepwater Exploration Asset South Deepwater exploration Asset

9 South Deepwater Exploration Asset Drilling Gas producer Oil producer Non productive Lankahuasa Profundo 3D Temoa 3D Lipax Holok Temoa Tamha-1 Nox Hux 20º 30 Nox Hux 3D Hux-1 Cañonero 3D Kayab 3D Veracruz Anegada-Labay 3D Kunah-1 Labay-1 Piklis-1 Holok-1 Kabilil-1 Nen-1 Lalail-1 Lakach-1 Noxal-1 Chelem-1 Leek-1 Holok-Alvarado 3D Han Etbakel-1 Nab-1 Tamil-1 Tamil 3D Chuktah 3D Chuktah-201 Bolol 3D Coatzacoalcos

10 Golfo de México B Project Evolution Drilling Chuktah 201 (513 m / 1,683 ft) Nab 1 (681 m / 2,234 ft) Studies Geosciences Geochemistry Seismic Lipax Holok Temoa Nox Hux Tamha-1 Nab-1 Etbakel-1 Han Labay-1 Holok-1 Tamil-1 Kabilil-1 Lakach-1 Lalail-1 Chelem-1 Chuktah-1 Noxal-1 Leek-1 Drilling Noxal-1 (935 m / 3,067 ft) Lakach-1 (988 m / 3,241 ft) Lalail-1 (805 m / 2,640 ft) Chelem-1 (810 m / 2,657 ft) Tamil (680 m / 2,230 ft) Tamha-1 (1,121 m / 3,677 ft) Etbakel (687m / 2,253 ft) Leek-1 (848 m / 2,781 ft) Holok 1 (1,015 m / 3,329 ft) Kabilil-1 (740 m / 2,427 ft) Labay-1 (1,698 m / 5,569 ft) Lakach-2DL (1,199 m / 3,933 ft ) Piklis-1 (1,945 m / 6,380 ft) Nen-1 (1,515 m / 4,969 ft) Studies 3D Seismic Gas producer Oil producer Drilling Hux-1 (1186 m/ 3890 ft) Kunah-1 (2147 m/ 7042 ft) Yoka-1 Piklis-1DL Development & appraisal Lakach Project Studies 3D Seismic 2D Seismic Electromagnetic Seabed geotechnical studies Plays / prospects Metocean

11 Content Background Deepwater Exploration Lakach Project (Production) Technical Challenges Contracting scheme Conclusions

12 3000 m R Location & Scope Tampico Appraise and develop the field, to produce 850 BCF of Tuxpan 500 proved + probable reserves Veracruz 3000 Progreso Mérida Cancún Campeche CD DE MEXICO Lakach Lerdo Carmen Coatzacoalcos Villahermosa 1 Appraisal well (2010) 7 Wells (producers) 2 Pipelines 18 Ø, 60 km / 37 mi 1 Umbilical 60 km / 37 mi 1 Gas Conditioning plant First gas: Nov 2014 Lakach its located at 98 km 61 mi SE of Veracruz, Ver. Discovery: 2007, Lakach-1 (Water deep 988 m / 3,241 ft)

13 Lakach Project Pipelines Type Units Total Jumper 18" Number 1 Jumper 6" Number 7 Umbilical Number 1 Subsea end line termination PLETS-SLEDS Number 4 Manifolds Number 2 Gas pipelines inches 18 Km / mi 60 / 37 Number 2 Production facilities UTA Umbilical termination Assembly Number 3 Subsea Unit of distribution Number 2 Subsea control system from onshore Number 1 Gas Plant of Lerdo de Tejada MMCF/d 400 Number 1 Horizontal Production Trees Number 7

14 Content Background Deepwater Exploration Lakach Project (Production) Technical Challenges Contracting scheme Conclusions

15 Technical Challenges Acquisition Exploration Seismic Processing Post Processing Interpretation Improve drilling time and efficiency Drilling Shallow hazards Wellbore stability Completion Sand Control Smart wells Subsea trees Temporary Abandonment Production Field Development Real time monitoring and control Pressure decline Subsea process Transport Flow assurance Pipelines

16 Technical Challenges (Exploration) Acquisition Seismic Processing Post-Processing Improve subsurface image for complex geological settings Improve subsurface image for complex geological settings Indicators of changes in lithology and stratigraphic sequences Wide Azimuth Full azimuth (Coil ) Electromagnetic Methods PSTM PSDM AVO Seismic inversion Seal evaluation Determination of abnormal pressures Spectral decomposition PSDM-RTM

17 Technical Challenges (Drilling) Drilling Shallow hazards Wellbore stability Improve drilling time and efficiency Avoid shallow hazards Geomechanics Improve and implement best practices Shallow hazard Studies 3D geomechanic models Drilling performance SE LAKACH 2DL NW Horiz. Vi RISK RIESGO FM SH_1a SH_1 SH_2 Depósitos hemipelágicos en la cima y de flujos hacia la base Depósitos de talud modificados por flujos de corriente Depósitos de talud modificados por flujos de corriente 1518 m/s 1687 m/s 1750 m/s 1757 m/s LOW LOW LOW LOW Depth= 3100 m/ FT SH_3 Depósitos de talud modificados por flujos de corriente 1767 m/s LOW SH_3a SH_4 Flujos de escombros y depósitos de talud Depósitos de talud cortados por flujos de corriente 1955 m/s 2207 m/s LOW LOW SH_5 Depósitos de talud y flujos de escombros Flujos de escombros y depósitos de talud 2177 m/s 2410 m/s LOW LOW danger zone SH_6 MIOC Depósitos de la base del talud 2543 m/s LOW Lostcirculation Zone Safety Zone Breakout Zone metros meters 1 Initials

18 Technical Challenges (Completion) R Sand Production Water control Subsea tree Sand Control Shut-in or choke water invaded intervals Choose the best option according to scenario Frack - Pack Smart wells Functional specifications IVC for control of upper zone Two zones IVC w/ Shroud for control of lower zone Frac pack Frac pack Csg 13 3/8 Screen Frac pack END END Csg 9 5/ #

19 Technical Challenges (Production) Drilling Completion Field development Temporary well abandonment Intervention-less wells Pressure decline Abandonment and recovery Reduce cost of well intervention SSV failure Real time monitoring of reservoir and well behavior parameters Subsea compression and separation Methanol injection mandrel SCSSV Chemical injection mandrel packer w/ control line bypass TR 13 5/ lb/p Csg 13 3/8 PT gauge sensor IVC Gravel pack assembly w/screen TR 9 5/ lb/p Csg 9 5/8 53.5#

20 Líquido acumulado en el ducto (m3) Presión disponible (kg/cm 2 ) Capacidad de Transporte Presión requerida en bajante de los pozos Presión de arribo en Lerdo = 25 kg/cm 2 Presión requerida en Lakach (kg/cm 2 ) Diam = 12" Diam = 14" Diam = 18" Diam = 16" Producción de Gas (MMPCSD) Diam = 12" Diam = 14" Diam = 16" Diam = 18" Presión disponible (kg/cm2) Diam = 12" Diam = 14" Diam = 16" Diam = 18" R Technical Challenges (Transport) Flow assurance Guarantee the fluid flow from wells throw onshore facilities, during the lifetime of project Pipelines Design, construction, operation and maintenance of 60 km / 37 mi tie-back, from 20 m / 66 ft to -1,200 m / 3,937 ft Conduct studies to predict and mitigate the phenomena associate to flow assurance: Transport capacity Hydrate Liquid management Corrosion and erosion Crust Operational philosophy Special studies: Metocean Route selection Seabed remediation Stresses during lay down Collapse Sand erosion Transport capacity Hydrates Gas plant Planta gas EAGL Liquids Formation Umbilicales Umbilical Corrosion Presión requerida en Bajante (kg/cm 2 ) Operation Líquido acumulado en la tbuería (m 3 ) Crust Ductos Pipelines p Campo Lakach

21 Content Background Deepwater Exploration Lakach Project (Production) Technical Challenges Contracting scheme Conclusions

22 Contracting scheme for core business January 6th, 2010 New regulatory framework of the procurement process for core activities* Business with additional flexibility (1): - In accordance with best practices in the oil industry - Modifications be allowed for improving results - Negotiated prices; participants pre-qualified - Direct awards or restricted group biddings Contracts with performance incentives: - Cash incentives for contractors that provides benefits from: new technologies, faster execution or greater profit - No ownership rights over hydrocarbons will be granted - Penalized companies for not meeting targets of committing environmental violations Schemes to support suppliers and contractors PEMEX will design a program to increase national content by 25%. Resources will be provided by PEMEX & Federal Government (*) The Committee of Acquisitions, Lease and Services will implement policies an oversee the process. 1. As compared to Acquisition, Leasing and Services of Public Sector Law and Public Services Law

23 Content Background Holok-Temoa Asset (Deepwater) Golfo de México B (Exploration) Lakach Project (Production) Technical Challenges Contracting scheme Conclusions 24

24 Conclusions PEMEX has decided to invest on Deepwater projects as one of its main business strategies, due to important amount of resources to be discovered. To optimize time and costs and reduce the learning curve PEMEX its looking for contractors with high experience and expertise to face this technical challenges. The North Sea contractors has developed the expertise to solve this kind of technical challenges. Therefore PEMEX recognize this companies as leaders on this matter. The new legal framework is favorable for investment with incentives to efficient companies