Crude Oil and gas reserves, 2012

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2 Morelos Petrochemical Center 3 2 Content 01 Petróleos Mexicanos 1.1 Summary of Consolidated operating statistics 1.2 Summary of Consolidated operating statistics (continued) 1.3 Income statements 1.4 Balance sheet as of December Investment Gas 3.1 Processing capacity 3.2 Natural gas processing and production 3.3 Dry gas balance 3.4 Gas processing by center 3.5 Domestic sales of dry gas, LPG and petrochemicals Petrochemicals 5.1 Installed capacity by complex 5.2 Petrochemical production 5.3 Production by petrochemical complex 5.4 Value of petrochemical domestic sales 5.5 Volume of petrochemical domestic sales Statistics on safety and environmental protection 5.6 Average end-user prices of selected petrochemicals 1.7 Employees Refining 4.1 Refining capacity International Trade 02 Exploration and production 4.2 Refining production 6.1 Hydrocarbon exports and imports 2.1 Hydrocarbon reserves and production 4.3 Production by refinery 6.2 Value of crude oil exports by destination Crude Oil and gas reserves, Value of domestic sales 6.3 Volume of crude oil exports by destination 2.3 Drilling and production 4.5 Volume of domestic sales 6.4 Crude oil exports to selected countries 2.4 Drilling 4.6 Domestic sales of refined products by region, Crude oil prices 2.5 Crude oil production by region and integral asset 4.7 Average end-user prices of selected refined products 6.6 Crude oil prices by destination 2.6 Crude oil production by type and region 4.8 Service stations by state 6.7 Refined products and dry gas exports and imports 2.7 Crude oil production in selected fields 6.8 Petrochemicals exports and imports 2.8 Natural gas production by region and integral asset Natural gas production in selected fields Crude oil and natural gas production by states Crude oil distribution 2.12 Natural gas distribution 07 International Comparisons proved oil reserves, selected countries proved natural gas reserves, selected countries oil production, selected countries natural gas production, selected countries atmospheric distillation capacity, top petroleum companies top petroleum companies by crude oil production top petroleum companies by natural gas production top petroleum companies by sales Glossary and Nomenclature

3 Lázaro Cárdenas refinery 2011 Infrastructure of the Mexican Petroleum Industry Producing fields Producing wells (annual average) Offshore platforms Natural gas processing centers Gas sweetening plants Cryogenic plants Liquids fractionating plants Condensate sweetening plants Sulfur recovery plants Refineries Petrochemical centers Petrochemical plants LPG distribution terminals Storage and distribution terminals of refined products Oil Tankers* Tank Trucks* Tank Cars* * Excludes third parties Summary of Consolidated operating statistics 1.2 Summary of Consolidated operating statistics (continued) 1.3 Income statements 1.4 Balance sheet as of December Investment 1.6 Statistics on safety and environmental protection 1.7 Employees Petróleos Mexicanos

4 1.1 Summary of Consolidated operating statistics Change 2011/ (%) Production (Mbd) Liquid hydrocarbons Crude oil Condensates and Liquids a Natural gas (MMcfd) Crude oil processing Refined products b Petrochemicals c (Mt) Natural gas production million cubic feet per day Domestic sales Volume (Mbd) Refined products d LPG Motor gasolines Jet fuel Diesel Fuel oil Others Dry gas (MMcfd) Petrochemicals c (Mt) Domestic sales of automotive gasolines thousand barrels per day 3 Value (millon pesos) Refined products d LPG Motor gasolines Jet fuel Diesel Fuel oil Others Dry gas Petrochemicals c a. Includes stabilized condensates. b. Includes LPG from natural gas processing plants of Pemex-Gas and Basic Petrochemicals and Pemex-Exploration and Production. c. Includes petrochemicals manufactured by Pemex-Petrochemicals, Pemex-Refining and ethane and sulfur produced by Pemex-Gas and Basic Petrochemicals. d. Excludes propane and pentane.

5 1.2 Summary of Consolidated operating statistics (continued) Change 2011/ (%) Foreign trade Volume (Mbd) Liquid hydrocarbons net exports Crude oil exports Refined products Exports e Imports Dry gas (MMcfd) Exports Imports Petrochemicals (Mt) Exports Imports Value (millon dollars) Crude oil exports Refined products Exports e Imports Dry gas Exports Imports Petrochemicals Exports Imports Prices (dollars per barrel) f Exports Crude oil Istmo Maya Olmeca LPG g Jet fuel Diesel Fuel oil (high sulfur content) Imports LPG Gasolines Fuel oil (low sulfur content) Natural gas (US$/MMBtu) e. Includes condensates from 2003 to f. Average prices. g. Includes components. La Cangrejera Petrochemical Center

6 1.3 Income statements a Millions of mexican pesos (million dollars) c Total sales Domestic sales Export sales Services income Cost of sales Gross income General expenses Transportation and distribution expenses Administrative expenses Operating income Gral. Lázaro Cárdenas refinery Other revenues (expenses) -net Comprehensive financing cost b Income* and taxes millions of mexican pesos 10 Participation in Subsidiaries and Associates' Results Income before taxes and duties Hydrocarbon extraction duties and other Special tax on production and services Income Net income Taxes *Income before taxes and duties a. Audited figures. Includes Petróleos Mexicanos, subsidiary entities and subsidiary companies. b. Until 2003, only net interest cost is considered. Since 2004 net money exchange and monetary position in addition to net interest cost is used. c. For reference purposes, the money exchange conversions from pesos to US dollar, have been made to the 2011 exchange rate of Ps = US$1.00.

7 Balance sheet as of December 31 a Million pesos (million dollars) b Total assets Current assets Properties, plant and equipment Others Total liabilities Short term liabilities Long term liabilities Equity Certificates of contribution Restatement of equity Accumulated net income (losses) Others Total liabilities and equity a. Audited results. Include Petróleos Mexicanos, subsidiary entities and subsidiary companies. b. For reference purposes, the money exchange conversions from pesos to US dollar, habe been made to the 2011 exchange rate of Ps = US$1.00. Cactus Gas Processing Center

8 Investment a Million pesos (millios dollars) c Total Non-PIDIREGAS b PIDIREGAS Pemex-Exploration and Production Non-PIDIREGAS b PIDIREGAS Pemex-Refining Non-PIDIREGAS b PIDIREGAS Pemex-Gas and Basic Petrochemicals Non-PIDIREGAS b PIDIREGAS Pemex-Petrochemicals Non-PIDIREGAS b PIDIREGAS Petróleos Mexicanos Corporate Non-PIDIREGAS b a. Cash flow figures include capitalized maintenance. b. Non-PIDIREGAS CAPEX does not include financing activities c. For reference purposes, the money exchange conversions from pesos to US dollar, habe been made to the 2011 exchange rate of Ps = US$1.00. La Cangrejera Petrochemical Center

9 Statistics on safety and environmental protection Frequency index ( number of disabling accidents per million of man-hours worked) Petróleos Mexicanos Pemex-Exploration and Production Pemex-Refining Pemex-Gas and Basic Petrochemicals Pemex-Petrochemicals Petróleos Mexicanos Severity index (number of lost workdays per million of man-hours worked) Petróleos Mexicanos Pemex-Exploration and Production Pemex-Refining Pemex-Gas and Basic Petrochemicals Pemex-Petrochemicals Petróleos Mexicanos Accidente frecuency index Environmental protection Sulfur oxide emissions (SOx) (t/mt) Carbon dioxide emissions (CO2) (t/mt) Total discharges to water (kg/mt) Disposal of hazardous waste a (%) Leakage and spills b Events Volume (t) Petróleos Mexicanos Pemex - Exploration and Production Pemex - Refining Pemex - Gas and Basic Petrochemical Pemex - Petrochemicals Petróleos Mexicanos Corporate 8 Environmental audits and certifications (number) Completed environmental audits (accrued) Clean industry certificates (accrued) (d) ISO 9000 c ISO c a. Includes stock changes in calculation of hazardous residual generation. A volume 7.8% greater than generated was disposed in b. According to the institutional rules regarding the report of leakages and spills 526 events were not included (equivalent to 5 tons) in 2003, and 469 (equivalent to 22 tons) were not included in c. In 2002, 2003 and 2004 the number of certificates decreased due to internal reorganizations and multisite certifications (in 2006, Pemex-Gas and Basic Petrochemicals and Pemex-Petrochemicals, obtain a single certificate). d. Includes 110 certificates received in 2011, (new and endorsements) Morelos Petrochemical Center

10 Employees Number at year end Total Pemex-Exploration and Production Pemex-Refining Pemex-Gas and Basic Petrochemicals Pemex-Petrochemicals Pemex-Corpotative a Medical services a. Pemex-Corporative includes Telecommunications employees. 9 Ku-Sierra

11 Oil facilities Camargo Monterrey Burgos Reynosa Cadereyta Producing Areas Arenque Madero Refinery Petrochemical Center Gas Processing Center Sales Center Salamanca Guadalajara Poza Rica Tula Cd. México San Martín Cosoleacaque Minatitlán Matapionche Pajaritos Cangrejera Morelos La Venta Cd. Pemex N. Pemex Cactus 10 Pipelines Maritime Route Salina Cruz

12 KU-S Offshore Platform 2011 Production Crude oil (Mbd) Natural gas (MMpcd) Infrastructure (At the end of the year) Producing fields Producing wells (annual average) Offshore platforms Pipelines (km) Crude oil Natural gas Proved reserves (MMbcoe) (as of January 1 st, 2012) Crude oil Gas liquids Natural gas Hydrocarbon reserves and production 2.2 Crude Oil and gas reserves, Drilling and production 2.4 Drilling 2.5 Crude oil production by region and integral asset 2.6 Crude oil production by type and region 2.7 Crude oil production in selected fields 2.8 Natural gas production by region and integral asset 2.9 Natural gas production in selected fields 2.10 Crude oil and natural gas production by states 2.11 Crude oil distribution 2.12 Natural gas distribution Exploration and Production

13 2.1 Hydrocarbon reserves and production a Million barrels of crude oil equivalent Total Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Hidrocarbon reserves million barrels of crude oil equivalent Proved b Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Probable Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Possible Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Proved reserves million barrels of crude oil equivalent 12 Memorandum Natural gas reserves (MMMcf) Total Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Hydrocarbons production (MMbcoe) a. As of January 1 st. The hydrocarbon reserves information was dictated favorably by the Comisión Nacional de Hidrocarburos (National Hydrocarbons Commission) on febrary 24, 2012 based on his CNH.E /12 resolution as stated in terms of article 10 of the Rules of Regulatory Laws of Constitutional Article 27 in the Petroleum Industry. Just missing publication by the Secretaria de Energía (Ministry of Energy) as specified in article 33, section XX of the Organic Law of Federal Public Administration. b. Since 2003, the definitions of the Securities and Exchange Commission (SEC) of the U. S. were used in order to evaluate the proved reserves, reason why the figures of previous years were adjusted.

14 2.2 Crude Oil and gas reserves, 2012 a Million barrels of crude oil equivalent Crude oil Gas liquids b Natural gas Total Total Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Proved c Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region By Fluid Gas liquids Natural gas Crude oil Probable Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Possible Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region By Type Proved Probable Possible Memorandum Natural gas reserves (MMMcf) Proved Probable Possible Total Total Southwestern Marine Northeastern Marine Region Northeastern Marine Southwestern Marine Region Southern Region Northern Northern Region Southern By Region a. As of January 1st. The hydrocarbon reserves information was dictated favorably by the Comisión Nacional de Hidrocarburos (National Hydrocarbons Commission) on febrary 24, 2012 based on his CNH.E /12 resolution as stated in terms of article 10 of the Rules of Regulatory Laws of Constitutional Article 27 in the Petroleum Industry. Just missing publication by the Secretaria de Energía (Ministry of Energy) as specified in article 33, section XX of the Organic Law of Federal Public Administration. b. Includes condensates. c. Since 2003, the definitions of the Securities and Exchange Commission (SEC) of the U. S. were used in order to evaluate the proved reserves. Burgos Integral Asset

15 2.3 Drilling and production 1000 Completed wells Wells drilled a Wells completed Exploratory wells Producing wells b Success rate % Development wells c Producing wells Success rate % c Drilling rigs d Exploratory wells Development wells Kilometers drilled Average depth by well e (m) Discovered fields f Crude oil Natural gas Producing fields Producing wells at end of period g Oil and gas production by well (bd) Crude oil Natural gas Non productives Producing wells and average depth per well a. Wells that reached their target. b. Since 2007, Pemex-Exploratio and Production adopts the Trade Exploratory Success definition. c. Excludes injection wells. d. Average drilling rigs. e. Average depth of wells drilled to their target. f. Includes only fields with proved reserves. In 2007 the Kibo and Lalail fields were exlcuded due to they do not incorporate proved reserves. g. Annual average Average depth per well (meters) Producing wells

16 2.4 Drilling Exploratory wells drilled Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Drilling Development wells drilled Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Exploratory wells completed Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Development wells completed Northeastern Marine Region Southwestern Marine Region Southern Region Northern Region Drilled wells Completed wells Producing wells 15 Cayo Arcas

17 2.5 Crude oil production by region and integral asset a Thousand barrels per day Change 2011/ (%) Total b Northeastern Marine Region Cantarell Ku-Maloob-Zaap Oil production by region thousand barrels per day Southwestern Marine Region Abkatún-Pol-Chuc Litoral Tabasco Southern Region Cinco Presidentes Bellota-Jujo Macuspana Muspac Samaria-Luna Northeastern Marine Southwestern Marine Northern Southern Northern Region Poza Rica-Altamira Aceite Terciario del Golfo Veracruz a. In 2004 the administrative structure of Pemex-Exploration and Production changed to integral assets. Hence, figures prior to 2004 were adjusted. b. Adjusted and corrected production by water content. Note: Integral Asset Aceite Terciario del Golfo was established in 2008, so that their associated fields were rid of Integral Asset Poza Rica-Altamira.

18 2.6 Crude oil production by type and region a Thousand barrels per day Change 2011/ (%) Total b Heavy Light Extra-light Northeastern Marine Region Heavy Light Southwestern Marine Region Heavy Light Extra-light Oil production by type, 2011 thousand barrels per day Southern Region Heavy Light Extra-light Northern Region Heavy Light Heavy 55.6 % Light 31.3 % Lighter 13.1 % 17 a. In 2004 the administrative structure of Pemex-Exploration and Production changed to integral assets. Hence, figures prior to 2004 were adjusted. b. Adjusted and corrected production by water content. Nitrogen plant, Jalpa

19 2.7 Crude oil production in selected fields Thousand barrels per day Change 2011/ (%) Total b Northeastern Marine Region Cantarell Akal-Nohoch a Sihil Chac Ixtoc Kutz Ku Zaap Maloob Otros Southwestern Marine Region Ixtal Chuc Bolontiku Sinan Caan Otros Southern Region Samaria Sen Jujo Pijije Iride Puerto Ceiba Tecominoacán Costero Tizón Cunduacán Cárdenas Guaricho Mora Sunuapa Yagual Otros Northern Region Bagre Poza Rica Tajín Agua Fría Coapechapa Arenque Otros Burgos Integral Asset a. Historically Cantarell. b. Adjusted and corrected production by water content.

20 2.8 Natural gas production by region and integral asset a Million cubic feet per day Change 2011/ (%) Total Northeastern Marine Region Cantarell Ku-Maloob-Zaap Southwestern Marine Region Abkatún-Pol-Chuc Litoral de Tabasco Natural gas production by region million cubic feet per day Southern Region Cinco Presidentes Bellota-Jujo Macuspana Muspac Samaria-Luna Northern Region Burgos Poza Rica-Altamira Aceite Terciario del Golfo Veracruz Northeastern Marine Southwestern Marine Northern Southern 19 a. In 2004 the administrative structure of Pemex-Exploration and Production changed to integral assets. Hence, figures prior to 2004 were adjusted. Note: Integral Asset Aceite Terciario del Golfo was established in 2008, so that their associated fields were rid of Integral Asset Poza Rica-Altamira.

21 2.9 Natural gas production in selected fields Million cubic feet per day Change 2011/ (%) Total Northeastern Marine Region Cantarell Akal-Nohoch a Ixtoc Sihil Chac Kutz Ku Otros Southwestern Marine Region May Ixtal Caan Sinan Bolontiku Chuc Otros Southern Region Sen Costero Iride Narvaez b Samaria Tizón Pijije Jujo Giraldas Cunduacán Muspac Oxiacaque Copano Cráter Tecominoacán Cárdenas José Colomo b Sunuapa Otros Northern Region Lizamba b Papán b Culebra b Apertura b Forastero b Arcabuz b Velero b Cuitláhuac b Nejo b Fundador b Arquimia b Lankahuasa b Corindon b Otros a. Historically Cantarell. b. Non associated gas field. Fundador Well, Burgos Integral Asset

22 2.10 Crude oil and natural gas production by states Change 2011/ (%) Crude oil (Mbd) Territorial sea Tabasco Veracruz Chiapas Tamaulipas Puebla San Luis Potosí Hidalgo Natural gas (MMcfd) Territorial sea Tabasco Veracruz Tamaulipas Nuevo León Chiapas Coahuila Puebla Campeche San Luis Potosí - Hidalgo Bellota-JuJo Integral Asset

23 2.11 Crude oil distribution Thousand barrels per day Change 2011/ (%) Availability a Production Naphtha and condensates Oil distribution, 2011 thousand barrels per day Distribution To refineries To abroad processing To petrochemical plants To exports terminals Linefill, stock changes, losses, injections, transfers and statistical differences To exports terminals 53.4 % To refineries 46.6 % a. Adjusted and corrected production by water content. 22 Akal B

24 Exploration and Production Producing Marine Areas Producing Terrestrial Areas Export Terminal FPSO YÙUM KÀK NÀAB CAYO ARCAS FPSO TA KUNTAH 23 Floating production and/or storage and Offloading Vessel DOS BOCAS PAJARITOS SALINA CRUZ

25 2.12 Natural gas distribution Million cubic feet per day Change 2011/ (%) Availability Production Sour gas Sweet gas From Pemex-Gas and Basic Petrochemicals Distribution Self-consumption a To atmosphere Carbon dioxide (CO 2 ) Natural gas Net linefill Carbon dioxide (CO 2 ) injected to deposits Condensation in pipelines and plants To Pemex-Refining To PGPB To pipelines To processing plants b Sweetening plants Cryogenic plants Natural gas utilization million cubic feet per day Utilization To atmosphere 24 Statistical difference and measurement errors c - a. Includes residual and field gas used in process and formation pressure boosting. b. Includes gas for pressure boosting purposes. c. Non significative figure. Dos Bocas

26 Burgos Gas Processing Center 2011 Processing Natural gas (MMcfd) Condensates (Mbd) Production Dry gas (MMcfd) * Natural gas liquids (Mbd) LPG (Mbd) Number of sweetening plants 20 Capacity of: Sour natural gas (MMcfd) Sour condensates (Mbd) Number of cryogenic plants 20 Capacity (MMcfd) Natural gas Products LPG distribution terminals Pipeline (km) Natural gas Products *Plant production Processing capacity 3.2 Natural gas processing and production Dry gas balance Gas processing by center 3.5 Domestic sales of dry gas, LPG and petrochemicals Gas

27 3.1 Processing capacity Million cubic feet per day Sweetening plants Sour condensates (Mbd) Sour natural gas Liquids recovery plants Cryogenics Absorption Liquids fractionating a (MBD) a. Includes liquids recovery plants. Burgos Gas Processing Center

28 3.2 Natural gas processing and production Million cubic feet per day Change 2011/ (%) Processing Wet gas Sour gas Sweet gas a Gas to liquified extraction Wet gas Reprocessing streams b Production (Mbd) Dry gas c (MMpcd) Natural gas liquids d LPG Ethane Gasolines Others e Sulfur (Mt) a. Includes sweet vapors from condensates. b. Gas from pipeline at the cryogenic plants located in Pajaritos, Poza Rica, Reynosa and from internal processes at La Cangrejera. c. Excludes ethane injected to dry gas pipelines. d. Includes stabilized condensates, reprocessing streams from La Cangrejera and others streams for fractionating. e. Heavy products from Reynosa and liquids transfered to the Madero Refinery. Ciudad Pemex Gas Processing Center 27 Burgos Gas Processing Center

29 Gas Naco Cd.Juárez Cananea Hermosillo Piedras Negras Chihuahua Monclova Monterrey BURGOS Cadereyta Gas Processing Center Ciudad Madero ARENQUE Pipeline Guadalajara POZA RICA Merida Cd. de México Toluca Lázaro Cárdenas Veracruz LA VENTA MATAPIONCHE CIUDAD PEMEX PAJARITOS CANGREJERA MORELOS NUEVO PEMEX CACTUS Salina Cruz 28

30 3.3 Dry gas balance Million cubic feet per day Change 2011/ (%) Supply Production From processing plants From producing fields of PEP Imports Others Demand Self-consumption Exports Domestic sales a Industrial-distributors sector Power sector Power autogeneration sector Dealers sector Linefil Difference a. Measured volumes at 1 Kg/cm 2 and 20 C Domestic sales and imports of dry natural gas million cubic feet per day Dry natural gas processing and production million cubic feet per day Industrial - distributors sector Power sector Power autogeneration sector Wholesalers Imports Natural gas processing Dry gas production Burgos Gas Processing Center

31 3.4 Gas processing by center Million cubic feet per day Change 2011/ (%) Gas processing Sour wet gas Cactus Ciudad Pemex Matapionche Nuevo Pemex Arenque Poza Rica Sweet wet gas Ciudad Pemex La Venta Reynosa a Burgos Nuevo Pemex a. As of August 31, 2009, is out of operation. 30 Ciudad Pemex Gas Processing Center

32 3.5 Domestic sales of dry gas, LPG and petrochemicals million pesos a Change 2011/ (%) Dry natural gas production and domestic sales million cubic feet per day Total b Dry gas LPG Petrochemicals Hexane Sulfur Carbon black Pentanes Heptane Butane Propane Isobutane Absorption solvent Others c Production Domestic sales 31 thousand tons Dry gas (MMcfd) LPG (Mbd) Petrochemicals Hexane Sulfur Carbon black Pentanes Heptane Butane Propane Isobutane Absorption solvent Others c a. Cash flow. b. Not includes V.A.T. c. Includes miscellaneous products. Cactus Gas Processing Center

33 Ing. Héctor R. Lara Sosa, refinery 2011 Thousand barrels per day Processing Production Domestic sales of refined products Facilities Atmospheric distillation capacity Number of refineries Storage and distribution terminals Service stations Pipeline (km) Crude oil Products Refining capacity 4.2 Refining production 4.3 Production by refinery 4.4 Value of domestic sales 4.5 Volume of domestic sales 4.6 Domestic sales of refined products by region, Average enduser prices of by state Service stations selected refined products Refining

34 Refining Rosarito Mexicali Ensenada Cd. Juárez Hermosillo Chihuahua Guaymas Cd. Obregón Sabinas Topolobampo Guamuchil Culiacán Laguna Torreón Paila Cuesta de los Muertos Monclova Saltillo Reynosa CADEREYTA Matamoros Mazatlán Refinery Zacatecas San Luis Potosí MADERO Progreso Polyduct Pipeline Aguascalientes El Castillo León SALAMANCA Degollado Zamora Querétaro TULA Pachuca Poza Rica Lerma Mérida Campeche 33 Manzanillo C.F.E. Morelia Toluca D.F. Cuernavaca Lázaro Cárdenas Puebla Veracruz Zapoapita Dos Bocas Pajaritos Villahermosa MINATITLÁN Acapulco SALINA CRUZ

35 4.1 Refining capacity Thousand barrels per day Atmospheric distillation Vacuum distillation Cracking Visbreaking Reforming Hydrodesulfurization a Alkylation and Isomerization a Coking a. Excludes La Cangrejera since Gral. Lázaro Cárdenas refinery

36 4.2 Refining production Thousand barrels per day Change 2011/ (%) Refined products LPG Gasolines Nova/Base a Pemex Magna b Ultra Low sulfur Magna c Pemex Premium Others Jet fuel Other kerosenes Diesel Low sulfur content Pemex Diesel Ultra Low sulfur Diesel c Others Industrial fuel oil Fuel oil Asphalts Lubricants Paraffines Refinery gas Other refined products d Petrochemicals (Mt) a. Refers to unfinished gasoline. b. Includes gasoline transfer from La Cangrejera to the Minatitlan Refinery. c. It start production as of January d. Includes aeroflex 1-2, coke, vacuum gas oil to export, furfural extract and flasher bottoms Refinery production thousand barrels per day Gasolines Diesel Fuel oil Jet fuel LPG Others Ing. Antonio M. Amor refinery

37 4.3 Production by refinery Thousand barrels per day Change 2011/ (%) Processing Production a Cadereyta Processing Production Refinery Runs, 2011 Thousand barrels per day Madero Processing Production Minatitlán Processing Production Salamanca Processing Production Tula 23.7 % Cadereyta 14.6 % Madero 10.1 % Minatitlán 13.0 % Salamanca 14.6 % Salina Cruz 23.9 % 36 Salina Cruz Processing Production Tula Processing Production a. Excludes products under abroad processing agreements. Ing. Antonio M. Amor refinery

38 4.4 Value of domestic sales Million pesos Change 2011/ (%) Total a Refined products Gasolines Pemex Magna Pemex Premium Aviation fuels Others b Kerosenes Jet fuel Others c Diesel Pemex Diesel Others Industrial fuel oil Fuel oil Asphalts Lubricants Paraffines Others d Petrochemicals a. Excludes IEPS and VAT. b. Includes initial filling motor gasoline. c. Includes domestic gas oil. d. Coke and impregnant. Ing. Héctor R. Lara Sosa refinery

39 4.5 Volume of domestic sales Thousand barrels per day Change 2011/ (%) Refined products Gasolines Pemex Magna Pemex Premium Aviation fuels Others a Kerosenes Jet fuel Others b Diesel Pemex Diesel Others Industrial fuel oil Fuel oil Asphalts Lubricants Paraffines Others c Production and domestic sales thousand barrels per day Production Domestic sales Petrochemicals (Mt) a. Includes initial filling motor gasoline. b. Includes domestic gas oil. c. Coke and impregnant.. Gral. Lázaro Cárdenas refinery

40 4.6 Domestic sales of refined products by region a, 2011 Thousand barrels per day Total Gasolines Kerosenes b Diesel Fuel oil Others Total Central Central - West Northeastern Southern - Southeastern Northwestern a. Economic Regionalization established by the Presidency of the United Mexican States. b. Includes domestic gas oil. 39 Gral. Lázaro Cárdenas refinery

41 4.7 Average end-user prices of selected refined products a Pesos per cubic feet Average end user prices of selected refined products Mexican pesos per cubic meter Pemex Magna , Pemex Premium , Jet fuel , Pemex Diesel , Fuel oil , Asphalt , Pemex Magna Pemex Premium Jet fuel Pemex Diesel Fuel oil Asphalt a. Excludes northern border of the country. Includes taxes. Note: See note about Public Prices in the Glossary. 40 Ing. Héctor R. Lara Sosa refinery

42 4.8 Service stations by state Total Aguascalientes Baja California Baja California Sur Campeche Coahuila Colima Chiapas Chihuahua Distrito Federal Durango Guanajuato Guerrero Hidalgo Jalisco México Michoacán Morelos Nayarit Nuevo León Oaxaca Puebla Querétaro Quintana Roo San Luis Potosí Sinaloa Sonora Tabasco Tamaulipas Tlaxcala Veracruz Yucatán Zacatecas Service station 41

43 Morelos Petrochemical Center 2011 Thousand tons Production Domestic sales Facilities Number of plants Number of centers Installed capacity Pipelines (km) * *Includes piping rack Installed capacity by complex 5.2 Petrochemical production 5.3 Production by petrochemical complex 5.4 Value of petrochemical domestic sales 5.5 Volume of petrochemical domestic sales 5.6 Average enduser prices of selected petrochemicals Petrochemicals

44 5.1 Installed capacity by complex Thousand tons Total Cosoleacaque La Cangrejera Morelos Pajaritos Escolín Camargo San Martín Texmelucan Tula Reynosa Morelos Petrochemical Center

45 Petrochemicals CAMARGO Petrochemicals Center ESCOLIN Petrochemicals Unit TULA 44 Pipelines SAN MARTÍN TEXMELUCAN PAJARITOS MORELOS COSOLEACAQUE CANGREJERA

46 5.2 Petrochemical production Thousand tons Change 2011/ (%) Total Methane derivatives Ammonia Carbonic anhydride Methanol Ethane derivatives Acetaldehyde Vinyl chloride Dichloroethane Ethylene Ethylene glycol Ethylene oxide HD Polyethylene LD Polyethylene Aromatics and derivatives Heavy aromatics Aromine Benzene Styrene Ethylbenzene Fluxoil Orthoxylene Paraxylene Toluene Xylenes High octane hydrocarbon Propylene and derivatives Acetonitrile Hydrocyanic acid Acrylonitrile Polypropylene Propylene Others Hydrochloric acid Muriatic acid Raw butane Petrochemical specialities a Heptane Hexane Hydrogen Nitrogen Oxygen Pentanes Petrochemical polymer Heavy reformate CPDI b Others Refined products Gasnaphtha Heavy naphtha Octane basis gasoline Amorphous gasoline Petrochemical production, 2011 Methane derivatives 28.3 % Ethane derivatives 33.8 % Aromatics and derivatives 15.8 % Propylene and derivatives 0.8 % Others 21.3 % 45 a. Includes additives for motor gasoline, antifreeze compounds, dispersing agents, dewaxers, corrosion inhibitors, surfactants and smoke suppressors. b. Production Stream for Incineration.

47 5.3 Production by petrochemical complex Thousand tons Change 2011/ (%) Total La Cangrejera Cosoleacaque Morelos Pajaritos San Martín Texmelucan Camargo a Tula Escolín a. Camargo unit are shut down since Morelos Petrochemical Center

48 5.4 Value of petrochemical domestic sales Million pesos Change 2011/ (%) Total a Methane derivatives Ammonia Carbonic anhydride Methanol Ethane derivatives Acetaldehyde Vinyl chloride Dichloroethane Ethylene Ethylene glycol Ethylene oxide HD Polyethylene LD Polyethylene Aromatics and derivatives Heavy aromatics Aromine Benzene Styrene Fluxoil Orthoxylene Paraxylene Benzene - Toluene Toluene Xylenes Morelos Petrochemical Center Propylene and derivatives Hydrocyanic acid Acrylonitrile Polypropylene Propylene Others b a. Not includes VAT. b. Includes butadiene, cat heavy naphtha, carbon tetrachoride, gasnaphtha, impregnating agent, polyethylene wax, nitrogen, oxygen and others products.

49 5.5 Volume of petrochemical domestic sales Thousand tons Change 2011/ (%) Total Methane derivatives Ammonia Carbonic anhydride Methanol Ethane derivatives Acetaldehyde Vinyl chloride Dichloroethane Ethylene Ethylene glycol Ethylene oxide HD Polyethylene LD Polyethylene Aromatics and derivatives Heavy aromatics Aromine Benzene Styrene Fluxoil Orthoxylene Paraxylene Benzene - Toluene Toluene Xylenes Volume porcent participation of petrochemical domestic sales, 2011 Methane derivatives 44.5 % Ethane derivatives 41.5 % Aromatics and derivatives 9.4 % Propylene and derivatives 2.5 % Others 2.2 % 48 Propylene and derivatives Hydrocyanic acid Acrylonitrile Polypropylene Propylene Others a a. Includes butadiene, cat heavy naphtha, carbon tetrachoride, gas naphtha, impregnating agent, polyethylene wax, nitrogen, oxygen and others products.

50 5.6 Average end-user prices of selected petrochemicals a Average end user prices of selected petrochemicals Mexican pesos per ton Acrylonitrile b Ammonia Vinyl chloride Styrene Monoethylene glycol, FG Hexane HD Polyethylene LD Polyethylene Linear LD Polyethylene c Toluene Acrylonitrile Ammonia Styrene Low density polyethylene Vinyl chloride a. Not includes V.A.T. b. For 2008, january-may average Producing Center Tula; 2009, november-december Producing Center Morelos. c. Since 2006 start the national production of this product. Note: See note about Public Prices in the Glossary. 49 La Cangrejera Petrochemical Center

51 KU-S Offshore Platform, Campeche 2010 World Crude Oil Exports by Country thousand barrels per day Saudi Arabia Russia Iran Nigeria United Arab Emirates Iraq Angola Norway Venezuela Kuwait Canada Mexico Source: OPEC (Annual Statistical Bulletin 2010/2011) and Petróleos Mexicanos Hydrocarbon exports and imports 6.2 Value of crude oil exports by destination 6.3 Volume of crude oil exports by destination 6.4 Crude oil exports to selected countries 6.5 Crude oil prices 6.6 Crude oil prices by area of destination 6.7 Refined products and dry gas exports and imports 6.8 Exports and imports of petrochemical products International Trade

52 6.1 Hydrocarbon exports and imports Change 2011/ (%) Balance of Trade million of U.S. dollars million of U. S. dollars Net exports Exports Crude oil Olmeca Istmo Maya Condensates Dry gas Refined products Petrochemicals Exports Imports Cumulative exports Imports Dry gas Refined products Petrochemicals thousand barrels per day Exports Crude oil Olmeca Istmo Maya Condensates Dry gas (MMcfd) Refined products Petrochemicals (Mt) Imports Dry gas (MMcfd) Refined products a Petrochemicals (Mt) FPSO Yuum K Ak Naa B, (The Lord of the sea), Campeche a. Excludes the volume of imported products under processing agreements.

53 6.2 Value of crude oil exports by destination Million of U. S. dollars Change 2011/ (%) Total America United States Others Europe Far East Africa Olmeca America United States Others Istmo America United States Others Europe Far East Africa Maya America United States Others Europe Far East Africa Dos Bocas Maritime Terminal

54 6.3 Volume of crude oil exports by destination Thousand barrels per day Change 2011/ (%) Total America United States Others Europe Far East Africa Olmeca America United States Others Istmo America United States Others Europe Far East Africa Crude oil exports thousand barrels per day 53 Maya America United States Others Europe Far East Africa Maya Olmeca Istmo

55 6.4 Crude oil exports to selected countries a Thousand barrels per day Change 2011/ (%) Total United States Spain India China Canada San Jose Agreement Portugal Netherlands Netherlands Antilles Israel England Others a. Excludes temporary crude oil exports for abroad processing. Ing. Antonio M. Amor refinery

56 6.5 Crude oil prices U. S. dollars per barrel Change 2011/ (%) Average price Olmeca Istmo Maya U. S. dollars per barrel Average price Olmeca Istmo Maya Crude oil prices U.S. dollar per barrel Mexican oil basket ENE FEB MAR ABR MAY JUN JUL AGO SEP OCT NOV DIC WTI Madero Maritime Terminal

57 6.6 Crude oil prices by area of destination U. S. dollars per barrel Total America United States Others Europe Far East Africa Olmeca America United States Others Istmo America United States Others Europe Far East Africa Maya America United States Others Europe Far East Africa Gral. Lázaro Cárdenas refinery

58 6.7 Refined products and dry gas exports and imports million of U. S. dollars Change 2011/ (%) Net exports Exports LPG Gasolines Jet fuel Diesel Vacuum gas oil Fuel oil Asphalts Others Dry gas Imports a LPG Propane Gasolines b Diesel Fuel oil Others Dry gas thousand barrels per day Net exports Exports LPG Gasolines Jet fuel Diesel Vacuum gas oil Fuel oil Asphalts Others Rosarito Sector pipelines Dry gas c Imports a LPG Propane Gasolines b Diesel Fuel oil Others Dry gas c a. Excludes imported products under abroad processing agreements. b. Includes MTBE. c. Fuel oil equivalent.

59 6.8 Exports and imports of petrochemical products million of U. S. dollars Change 2011/ (%) Net exports Exports Acetaldehyde Acrylonitrile Ammonia Sulfur Benzene Polyethylenic wax Styrene Ethylene Ethylene glycol Polyethylenes Polypropylene Others Imports Ammonia Benzene Polyethylenes Propylene Toluene Xylenes Others thousand tonnes Net exports Exports Acetaldehyde Acrylonitrile Ammonia Sulfur Benzene Polyethylenic wax Styrene Ethylene Ethylene glycol Polyethylenes Polypropylene Others Imports Ammonia Benzene Polyethylenes Propylene Toluene Xylenes Others Platform in Ku Camp.

60 Ing. Héctor R. Lara Sosa refinery 2011 International Comparisons Mexico in the World Proved crude oil reserves 17 Proved gas reserves 33 Crude oil production 7 Natural gas production 13 Atmospheric distillation capacity proved oil reserves, selected countries proved natural gas reserves, selected countries oil production, selected countries natural gas production, selected countries atmospheric distillation capacity, top petroleum companies top petroleum companies by crude oil production top petroleum companies by natural gas production top petroleum companies by sales International Comparisons

61 proved oil reserves, selected countries a proved natural gas reserves, selected countries a Rank Country Million barrels 1 Saudi Arabia Venezuela Canada Iran Iraq Kuwait United Arab Emirates Russia Libya Nigeria Kazakhstan Qatar United States China Brazil Algeria Mexico b World total a. As of January 1 st. b. Includes condensates and natural gas liquids. Source: Oil and Gas Journal (December 5, 2011; with estimated figures as of January 1 th,2011) and Petróleos Mexicanos. Rank Country Trillion (10 12 ) cubic feet 1 Russia Iran Qatar Saudi Arabia United States Turkmenistan United Arab Emirates Venezuela Nigeria Algeria Indonesia Iraq China Kazakhstan Malaysia Egypt Norway Uzbekistan Kuwait Canada Mexico 12 World total a. As of January 1 st. Source: Oil and Gas Journal (December 5, 2011; with estimated figures as of January 1 th,2011) and Petróleos Mexicanos. 60

62 oil production, selected countries natural gas production, selected countries Rank Country 1 Russia 2 Saudi Arabia 3 United States 4 China 5 Iran 6 Canada 7 Mexico 8 United Arab Emirates 9 Kuwait 10 Venezuela 11 Iraq 12 Nigeria 13 Brazil 14 Norway 15 Angola World total Thousand barrels per day Rank Country 1 United States 2 Russia 3 Iran 4 Canada 5 Former USSR 6 Qatar 7 China 8 Norway 9 Algeria 10 Netherlands 11 Saudi Arabia 12 Indonesia 13 Mexico 14 Malaysia 15 United Kingdom World total Million cubic feet per day Source: Oil and Gas Journal (March 22, 2012) and Petróleos Mexicanos. Source: Oil and Gas Journal (March 22, 2012) and Petróleos Mexicanos.

63 atmospheric distillation capacity, top petroleum companies top petroleum companies by crude oil production a Rank Company Country Thousand barrels per day 1 Exxon Mobil United States Sinopec China Royal Dutch Shell United Kingdom/Netherlands CNPC China PDVSA Venezuela BP United Kingdom ConocoPhillips United States Valero Energy United States Saudi Aramco Saudi Arabia Total France Chevron United States Petrobras Brazil JX Holdings Japan NIOC Iran Petróleos Mexicanos Mexico Rank Company Country Thousand barrels per day 1 Saudi Aramco Saudi Arabia NIOC Iran PDVSA Venezuela Petróleos Mexicanos Mexico CNPC China KPC Kuwait Exxon Mobil United States INOC Iraq BP United Kingdom Rosneft Russia Petrobas Brazil Lukoil Russia Chevron United States Royal Dutch Shell United Kingdom/Netherlands Adnoc Abu Dhabi Source: Information as of 2012 from Energy Intelligence Group (PIW, March 2012) and from Petróleos Mexicanos. a. Includes natural gas liquids. Source: Information as of 2012 from Energy Intelligence Group (PIW, March 2012) and from Petróleos Mexicanos.

64 top petroleum companies by natural gas production top petroleum companies by sales Rank Company Country Million cubic feet per day 1 Gazprom Russia NIOC Iran Exxon Mobil United States Royal Dutch Shell United Kingdom/Netherlands BP United Kingdom Saudi Aramco Saudi Arabia CNPC China Sonatrach Algeria Petróleos Mexicanos Mexico QP Qatar Uzbekneftegas Uzbekistan Total France Petronas Malaysia Chevron United States ConocoPhillips United States Rank Company Country Million of U.S. dollars 1 Royal Dutch Shell United Kingdom/Netherlands Exxon Mobil United States BP United Kingdom Sinopec Group China China National Petroleum China Chevron United States Total France ConocoPhillips United States ENI Italy Petrobras Brazil Petróleos Mexicanos Mexico PDVSA Venezuela Statoil Norway Lukoil Russia Petronas Malaysia Repsol YPF Spain Source: Information as of 2012 from Energy Intelligence Group (PIW, March 2012) and from Petróleos Mexicanos. Source: Fortune (July 25, 2011; figures as of December 31th,2010) and Petróleos Mexicanos.

65 Glossary and Nomenclature 129

66 Glossary PRODUTION FIELDS. Fields with exploration wells. These include operating wells, which are divided into injection and production wells, and closed wells with potential to be exploited in the future. REFINING CAPACITY. The daily operating capacity of a plant to produce refined products. Daily operating capacity means the maximum volume to be processed when the plant Works without interruption. CONDENSATES. Any mixture of relatively light hydrocarbons that remain liquid at normal temperature and have a certain quantity of propane and butane. Unlike crude oil, they have low or cero quantity of heavy hydrocarbons that constitute heavy fuel. There are three main sources of condensates: a) liquid hydrocarbons that separate when natural gas is treated, typically consists of C5 to C8, b) liquid hydrocarbons coming from non-associated gas that are recovered at the surface, and c) liquid hydrocarbons coming from gas/condensate basins, which can barely be distinguished from a stabilized light crude oil. DRILLING RIGS IN OPERATION. The daily average number of drilling rigs used for drilling Wells or in related activities such as dismantlement, transport and maintenance. FLOATING PRODUCTION STORAGE AND OFFLOADING (FPSO). Floating Production Storage and Offloading vessel (also called a unit and a system ). A floating tank system used by the offshore crude oil and gas industry designed to receive, process, and storage crude oil or natural gas produced from nearby platforms, until the product can be offloaded onto waiting tankers. Instead, the FSO are not equipped with process systems. NATURAL GAS. Light paraffinic hydrocarbon mixture, mainly methane, small quantities of ethane and propane and in variable proportions nitrogen, carbon dioxide and hydrogen sulfide. Natural gas can be associated with crude oil or be found alone in non-associated natural gas wells. DRY GAS. Natural gas free of heavier liquid hydrocarbons (natural gas liquids) consisting of ethane, propane, butane and natural gasoline. SOUR GAS. Natural gas containing hydrocarbons, hydrogen sulfide and carbon dioxide (the later in concentrations greater than 50 ppm). WET GAS. Natural gas containing more than 3 gallons of liquid hydrocarbons per thousand cubic feet of gas. NATURAL GASOLINE. A highly volatile hydrocarbon mixture heavier tan propane. Usually added to automotive gasoline to increase vapor pressure and start gasoline engines at low temperatures. Also used by the petrochemical industry to produce isobutane and isopentane, used in alkylation processes. LIQUEFIED PETROLEUM GAS (LPG). A gaseous mixture of propane and butane obtained during the fractionation of natural liquids or during the fractionation of refined products. It is the lighter fraction of crude oil utilized for domestic use and carburation. SPECIAL TAX ON PRODUCTION AND SERVICES (STPS OR IEPS). An indirect tax on domestic sales of gasoline and diesel that Pemex-Refining collects on behalf of the Mexican Government. The difference between the retail price, or final price, and the producer price is the IEPS rate. The final price of gasoline and diesel is established by the Ministry of Finance (SHCP). The producer price of PEMEX is referenced to that of an efficient refinery in the Gulf of Mexico. SAN JOSÉ AGREEMENT. Crude oil cooperation agreement between Mexico and Venezuela that benefits Central America and Caribbean area and contemplates a collaboration scheme dedicated to finance economic development projects. CRUDE OIL. Oil that comes from a reservoir after separating any associated gas. It does not include condensates and natural gas liquids production. Recovered crude oil is considered heavy or light according to the following approaches: Heavy: crude oil with API gravity less or equal to 27. Light: crude oil with API gravity between 27 to 38. Extra-light: crude oil with API gravity greater than 38. Three varieties of crude oil are exported: Maya: heavy crude oil with API gravity of 22 and 3.3% sulfur by weight. 65

67 Istmo: light crude oil with API gravity of 33.6 and 1.3% sulfur by weight. Olmeca: extra-light crude oil with API gravity of 39.3 and 0.8% sulfur by weight. WELLS. Wells are classified according to their purpose or function, into development (including injection wells) and exploration (including wells by stratographic probe); and according to their completion grade, into drilled or completed. Drilled wells. Are those with completed operations with the rotary drill and cemented casing, but have not entered into subsequent operations that allow production. Completed wells. Are those with completed operations regarding: installation of production pipelines; shots to the pipeline lining to allow communication between the interior of the well and the storing rock; and cleaning and stimulation of the rock to enhance the flow of hydrocarbons. Successful exploration wells. The relationship of currently producing exploration wells that incorporate reserves, divided by total completed wells. Since 2007, Pemex-Exploration and Production adopted the definition of Exploratory Commercial Success derived from international practices which evaluates the performance of exploration activities from an economic point of view. PEMEX-REFINING PROCESSES. Alkylation. Process by which an isoparafine (of short chain) combines chemically with an olefin through a catalyst to form another isoparafine (of long chain), called alkylate. It s a major aspect of the upgrading of petroleum since it s formed of high-octane compound. Cracking. Process to break large molecules of crude oil into smaller ones: known as thermal cracking when the process is reached by the application of heat; catalytic cracking when a catalyst is used; and hydrocracking, when the process is carried out in a hydrogen atmosphere. Distillation. Process consisting on heating a liquid mixture until the most volatile components pass to the vapor phase, then the vapor is cooled down to recover these components by condensation. The main objectives of distillation are to separate a mixture of several components taking advantage of their different boiling points, or to separate the volatile materials of the non-volatile ones. Fractionation. Distillation process that separates small fractions of a hydrocarbon mixture. Hydrodesulfurization. Process that eliminates sulfur by transforming it to hydrogen sulfide in the gaseous stream, which can be easily separated and converted to elemental sulfur. Isomerization. Process that alters the fundamental arrangement of the atoms of a molecule without adding or subtracting anything to the original molecule. Butane is rearranged as isobutane to be used in the alkylation of isobutene and other olefins for high octane hydrocarbon production. Reforming. Process that improves the antiknoc quality of gasoline fractions by modifying their molecular structure: known as thermal reforming when is carried out by heat; and as catalytic reforming when catalyst is used. PETROCHEMICAL PRODUCTS. These chemicals are produced from raw materials derived from crude oil and natural gas. According to the governmental resolution published on November 13, 1996, in the Official Gazette of the Federation, the categories of basic petrochemical products are constituted by those derivates that serve as basic industrial raw materials. These products can only be elaborated by the state through Petróleos Mexicanos and its subsidiary entities: 1.- Ethane 2.- Propane 3.- Butane 4.- Pentane 5.- Hexane 6.- Heptane 7.- Carbon black 8.- Naphtha 9.- Methane, when it comes from hydrogen carbides, obtained from reservoirs located in Mexican territory and used as raw material in industrial petrochemical process. In addition, Petróleos Mexicanos has petrochemical by-products and other products which, according to the generally adopted convention, are not petrochemicals but are elaborated in its petrochemical areas. REGION. A goegraphical area corresponding to the administrative division of Pemex-Exploration and Production. The regional heads are located along the Gulf of Mexico Coast: Poza Rica, Veracruz (Northern Region), Villahermosa, Tabasco (Southern Region) and Ciudad del Carmen, Campeche (Northeastern Marine Region and Southwestern Marine Region). Integral asset. An administrative subdivision of each region. Resulting from the regions restructure, they are distributed as follows: Northeastern Marine Region: Cantarell and Ku-Maloob-Zaap. 66

68 Southwestern Marine Region: Abkatún-Pol-Chuc and Litoral de Tabasco. Southern Region: Bellota-Jujo, Cinco Presidentes, Macuspana, Muspac and Samaria-Luna. Northern Region: Burgos, Poza Rica-Altamira and Veracruz. RESERVES. Estimated amount of hydrocarbons that can be commercially recovered from well-known formations at a specific date. It is worth mentioning all estimated reserves involve some grade of uncertainty. The SEC permits oil and gas companies, in their filings with the SEC, to disclose only proved reserves that a company has demonstrated by actual production or conclusive formation tests to be economically and legally producible under existing economic and operating conditions. We use certain terms in this document, such as total reserves, probable reserves and possible reserves, that the SEC s guidelines strictly prohibit us from including in filings with the SEC. PROVED RESERVES (1P). Estimated volumes of hydrocarbons which geological and engineering analysis demonstrates with reasonable certainty will be commercially recoverable in future years from known reservoirs under the prevailing economic conditions and existing operations; for example, prices and costs at the date of estimate. Prices include existing changes or contractual arrangements but are not based on future conditions. PROBABLE RESERVES (2P). Those reserves which analysis of geological and engineering data suggests are more likely to be recovered than to not being recoverable. If probabilistic methods are employed for evaluation, there is a probability of at least 50% that the amounts to be recovered will be equal to or greater than the sum of proved plus probable reserves, also called 2P reserves. POSSIBLE RESERVES (3P). Those hydrocarbon reserves which analysis of geological and engineering data suggests are less likely to be recoverable than probable reserves. According to this definition, when probabilistic methods are employed, there is a probability of at least 10% that the amounts actually recovered will be equal to or greater than the sum of proved, probable and possible reserves, also called 3P reserves. DOMESTIC SALES. Sales that Petróleos Mexicanos bills to its distributors in Mexican territory or that it carries out directly to national clients for intermediate and end use. The sales value excludes taxes (STPS and VAT) and commissions to distributors. REGIONALIZATION OF REFINED PRODUCTS SALES. Since 2002 sales petroleum products adopted the economic regionalization used by the executive branch of the Mexican Government. Central Region: Estado de Mexico, Distrito Federal, Morelos, Tlaxcala, Hidalgo and Puebla. Public prices. The public prices that are presented correspond to different reference places, which are shown in the following table: Product Jet fuel Heavy fuel oil Acrylonitrile Ammonia Vinyl chloride Styrene Monoethylene glycol FG Reference place Mexico City airport Producing Center Tula Producing Center Tula/Morelos Producing Center Cosoleacaque Producing Center Pajaritos Producing Center La Cangrejera Producing Center Morelos Northeastern Region: Chihuahua, Durango, Coahuila, Tamaulipas and Nuevo León. Northwestern Region: Baja California, Baja California Sur, Sonora and Sinaloa. Central-western Region: Nayarit, Zacatecas, Aguascalientes, Jalisco, Colima, San Luis Potosi, Guanajuato, Queretaro y Michoacan. South-southeastern Region: Veracruz, Guerrero, Oaxaca, Chiapas, Tabasco, Campeche, Yucatán and Quintana Roo. 67 Hexane Producing Center La Cangrejera High density polyethylene Producing Center Morelos Low density polyethylene Producing Center La Cangrejera Toluene Producing Center La Cangrejera

69 Nomenclature C Celsius degrees FG Fiber grade Explanations: kg/cm 2 km m bd Mbd MMb MMboe Mm 3 Kilogram per square centimeter Kilometer Meter Barrels per day Thousand barrels per day Million barrels Million barrels of crude oil equivalent Thousand cubic meters VAT GPC PC OPEC PPQ PGPB PIDIREGAS ppm Value Added Tax Gas Processing Center Petrochemical Complex Organization of the Petroleum Exporting Countries Pemex-Petrochemicals Pemex-Gas and Basic Petrochemicals Long-term Productive Infrastructure Projects Parts per million Annual variations are determined based on the original figures before rounding. Figures may not total due to rounding. Operating figures can be modified by adjustments and complaints that are solved after the accounting settlement, thus variations with respect to accounting figures may appear. International trade figures include operations related with the Petróleos Mexicanos system. The amounts shown in our consolidated financial statements do not express the provisions of Bulletin B-10 under Mexican FRS, which requires to express amounts in thousands of constant pesos. MMMcf Billion cubic feet MMUS$ Million dollars MMcfd Mt Million cubic feet per day Thousand tons MM$ US$/b Million pesos Dollars per barrel The statistical yearbook contains Petróleos Mexicanos information as of December 31, MTBE STPS INPC Ps. Methyl tertiary butyl ether Special Tax on Production and Services National Consumer Price Index Mexican pesos US$/MMBtu WTI $/kg $/m 3 Dollars per million Btu West Texas Intermediate Pesos per kilogram Pesos per cubic meter For information about this publication, please contact the Gerencia de Integración de Información Institucional, at Marina Nacional #329, Floor 31, Col. Petróleos Mexicanos C3, Mexico City, or by calling: (52) CAPEX Capital expenditure Negligible figure LD Low Density - Null value HD High Density -

70 Statistical Year Book Morelos Petrochemical Center