Hydrocarbon Reserves of Mexico

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1 Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2006 i

2 ii

3 Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2006 iii

4 2006 Pemex Exploración y Producción ISBN Copyrights reserved. No part of this publication may be reproduced, stored or transmitted in any manner or by any electronic, chemical, mechanical, optical, recording or photocopying means, for either personal or professional use, without prior written authorization from Pemex Exploración y Producción. iv

5 Contents Page Preface v 1 Introduction 1 2 Basic Definitions Original Volume of Hydrocarbons in Place Petroleum Resources Original Volume of Total Hydrocarbons in Place Original Volume of Undiscovered Hydrocarbons Original Volume of Discovered Hydrocarbons Prospective Resources Contingent Resources Reserves Proved Reserves Developed Reserves Undeveloped Reserves Non-proved Reserves Probable Reserves Possible Reserves Oil Equivalent 9 3 Estimation of Hydrocarbon Reserves as of January 1, Hydrocarbon Prices Oil Equivalent Gas Behavior in PEP Handling and Transport Facilities Gas Behavior in Processing Complexes Remaining Total Reserves Remaining Proved Reserves Remaining Developed Proved Reserves Undeveloped Proved Reserves Probable Reserves Possible Reserves 26 4 Discoveries Aggregate Results Offshore Discoveries 32 iii v

6 Contents Page 4.3 Onshore Discoveries Historical Discoveries of Hydrocarbons 66 5 Distribution of Hydrocarbon Reserves Northeastern Offshore Region Evolution of Original Volumes in Place Evolution of Reserves Ku-Maloob-Zaap Complex Southwestern Offshore Region Evolution of Original Volumes in Place Evolution of Reserves Northern Region Evolution of Original Volumes in Place Evolution of Reserves Southern Region Evolution of Original Volumes in Place Evolution of Reserves 105 Abbreviations 113 Glossary 115 Statistical Appendix 123 Hydrocarbon Reserves as of January 1, Hydrocarbon Production 124 Distribution of Hydrocarbon Reserves as of January 1, 2006 Northeastern Offshore Region 125 Southwestern Offshore Region 126 Northern Region 127 Southern Region 128 vi iv

12 Original Volume of Total Hydrocarbons in Place Original Volume of Undiscovered Hydrocarbons Original Volume of Discovered Hydrocarbons Economic Non-Economic Uncertainty Non- Recoverable P r o s p e c t iv e R e s o u r c e s Low Estimate Central Estimate High Estimate Non- Recoverable C o n t in g e n t R e s o u r c e s Low Estimate Central Estimate High Estimate R e s e r v e s Proved Proved + Probable Proved + Probable + Possible P r o d u c t i o n

14 Non-Proved Reserves Undeveloped Developed Accumulated Production Proved Reserves Probable Reserves Possible Reserves Original Proved Reserves Original Reserve (Economic Resource)

18 Sweet Wet Gas isf Natural Gas Flaring Self-Consumption hesf Compressor Gas to be delivered to processing centers tlsf Sweetening Plant plsf Cryogenic Plant Dry Gas cedglf Dry Gas Equivalent to Liquid plrf Plant Liquids Oil Equivalent Sulfur crf Condensate Crude Oil

20 30 Crude Oil dollars per barrel Sour Wet Gas dollars per thousand cubic feet 0 Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

22 1.00 Handling efficiency shrinkage factor (hesf) Transport liquefiables shrinkage factor (tlsf) Condensate recovery factor barrels per million cubic feet 0 Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov Northeastern Offshore Southwestern Offshore Northern Southern

23 0.99 Impurity shrinkage factor (isf) Plant liquefiables shrinkage factor (plsf) Plant liquids recovery factor (plrf) barrels per million cubic feet Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov Arenque Cactus Cd. Pemex La Venta Mata Pionche Nuevo Pemex Poza Rica Reynosa

24 Bboe Proved Probable 2P Possible 3P

26 Bboe Additions Revisions Developments Production 2004

28 Bboe Developed Undeveloped 6.9 Proved Bboe 0.2 Additions 0.3 Developments Production 0.0 Revisions

35 Bboe Additions Revisions Developments 2004

37 Bboe Additions Revisions Developments 2004

42 N W S E Neuhtli-1 Marbella-1 Tucoo Ompa-1 Anade-1 Chapoli-1 Coztic-1 Miac-1 Nemiti-1 Amoca-1 Mat-1 Gaviota-1 Gaviota-4 Gaviota-3 Ostra-1 Cantli-1 Gaviota-2 Xicope-1 Luhua-1 Copali-1 Xopan-1 SAN ALFONSO-2 San Alfonso Chichini-1 PAILEBOT-10 SAN RAMON-13 RODADOR-1 Pailebot SAN RAMON-1A 5 PRESIDENTES-501 San Ramón TORTUGUERO-116 CHICOZAPOTE-101 AJI-1 PAILEBOT-6 Xaxamani-1 PAILEBOT-1 PALOTADA-1 5 PRESIDENTES-17 5 PRESIDENTES-801 Campa-1 Tortuguero TORTUGUERO-1 MAGALLANES NTE-1 PUNTA GORDA-5 R. GRANDE-101 GURUMAL-2 Cinco Presidentes Rabón Grande COLORADO-1 RABON GRANDE-1 Coatzacoalcos km

SW Amoca-1 NE 500 1000 Time (ms) 1500 2000 2500 3000 Xaxamani-1 Namaca-1 North Yetic-1 Amoca-1 LOC.

43 SW Amoca-1 NE Time (ms) Xaxamani-1 Namaca-1 North Yetic-1 Amoca-1 LOC. CAMPA-1 Centli-1 EL BURRO- 301 RABASA-1 RABON GRANDE-5 CHICHINI-1 TONALA-203 BLASILLO- 200 TORTUGUERO-1 LOC. COPALI-1 SEQUENCE 3.0 Ma CINCO PDTES-801 LOC. XOPAN-1 GAVIOTA-2 LOC. NEMITI-1 GAVIOTA-1 LOC. MIAC-1 LOC. ZOLLI-1 MARBELLA-1 SEQUENCE 3.8 Ma LOC. COZTIC-1 LOC. CHAPOLI-1 LOC. OMPA-1 SEQUENCE 5.5 Ma SEQUENCE 12.5 Ma Shallow Marine Facies Slope Facies Basin Floor System Sandy Sediments Allochthonous Salt Submarine Fan Systems

44 INTERVAL I INTERVAL II N N W E W E S S 0 1 km 0 1 km INTERVAL III INTERVAL IV-V N N W E W E S S 0 1 km 0 1 km

45 N1 N2

46 W N E Oil and Gas Fields Structure to be Tested Salt CHEEL KAMBUL S KATAAN TUNICH TABAY TUNICH MUYAL HOL 500 m 400 m 300 m 200 m 100 m 75 m 50 m 40 m 30 m 20 m 10 m KUCHE BALCHE XULUM BAATS YAXCHE PEMECH - 1 BAATS CHI - 1 CHAKAY MICO CHILTEPEC PEPENO PTO. CEIBA PTO. CEIBA MECOACAN LAGOON Dos Bocas Gulf of Mexico KINIL CHUKTAH Southwestern Offshore Region PEP AYIN MAKECH ALAK KEEK KAXAN YAXCHEN TZOLOLKIN DZONOT LOLTUN YAABKAN CHUM UTZIL CHICHINI CITAM CHIKIN - 1 MAC YUMSIL SIKIL SINAN KELEM FOSA COMALCALCO PAC UXMAL MITNAL OCNA AHAU ITZAMNA KUM BOLONTIKU KAB TSIMIN ATAMBIL - 1 COSACO TIZON TROJE TENGUAYALA CHANCASTE IXMINI LUNA HAMACA TURULETE PALAPA LUNA ALVARO PIJIJE CENIZO OBREGON ESCARBADO APANCO MACACO KOKAY TIXAN UECH KI ALUX CHEM MAY YUM Frontera CHA OCH YUM KAYAB YAXILTUN IB LUCH MUKUY HAYABIL AJAL KAX YUM COSTERO ZEREQUE LE TOLOC OCH MISON 101 MISON MANIK ZINIC PICH KIX MOAN CEEH KANAAB ACANUN WACH - 1 MALOOB RIBEREÑO CHUC NAK-1 GABANUDO ZAAP BATAB POL THEL Homol-1 KOT - 1 TSOL - 1 CHE CHUKU A ETAIL - 1 CHACMOOL KU KUTZ IXTOC PEK BACAB LUM POK ABKATUN KAY ICH BOTS LUM EK LUX CANTARELL PECH XICALANGO BALAM CHAC 61 km TAKIN SAM NOHOCH NIX MANAB IXIM PETEN PALANCARES KULKUKAN Northeastern Offshore Region XOC CHILAM Cd. del Carmen TERMINOS LAGOON km

47 4800 HOMOL LEGEND PROVED PROBABLE C.A.A OIL AND GAS PRODUCING WELL N E W S 1 2 km 0

PRESIDENTES-501 San Ramón TORTUGUERO-116 CHICOZAPOTE-101 AJI-1 PAILEBOT-6 Xaxamani-1 PAILEBOT-1 PALOTADA-1 5 PRESIDENTES-17 5 PRESIDENTES-801

48 N W S E Neuhtli-1 Marbella-1 Tucoo Ompa-1 Anade-1 Chapoli-1 Miac-1 Coztic-1 Amoca-1 Nemiti-1 Mat-1 Gaviota-1 Gaviota-4 Gaviota-3 Ostra-1 Cantli-1 Gaviota-2 Xicope-1 Luhua-1 Copali-1 Xopan-1 SAN ALFONSO-2 San Alfonso Chichini-1 PAILEBOT-10 SAN RAMON-13 RODADOR-1 Pailebot SAN RAMON-1A 5 PRESIDENTES-501 San Ramón TORTUGUERO-116 CHICOZAPOTE-101 AJI-1 PAILEBOT-6 Xaxamani-1 PAILEBOT-1 PALOTADA-1 5 PRESIDENTES-17 5 PRESIDENTES-801 Campa-1 Tortuguero TORTUGUERO-1 MAGALLANES NTE-1 PUNTA GORDA-5 R. GRANDE-101 GURUMAL-2 Cinco Presidentes Rabón Grande COLORADO-1 RABON GRANDE-1 Coatzacoalcos km

49 N Reservoir-I N Reservoir-II W E W E S S km km N Reservoir-III W E S km

50 NE Xaxamani-1 SW Time (ms)

51 Interval-III Plioc. Inf. Interval-II Interval-I

201 601 101 5200 W N E Oil and Gas Fields Structure to be Tested Salt CHEEL KAMBUL S KATAAN TUNICH TABAY TUNICH MUYAL HOL 500 m 400 m 300 m 200 m 100 m 75 m 50 m 40 m 30 m 20 m KUCHE BALCHE XULUM -

52 W N E Oil and Gas Fields Structure to be Tested Salt CHEEL KAMBUL S KATAAN TUNICH TABAY TUNICH MUYAL HOL 500 m 400 m 300 m 200 m 100 m 75 m 50 m 40 m 30 m 20 m KUCHE BALCHE XULUM BAATS YAXCHE PEMECH - 1 BAATS CHI - 1 CHAKAY MICO CHILTEPEC PEPENO PTO. CEIBA PTO. CEIBA MECOACAN LAGOON 10 m Dos Bocas Gulf of Mexico KINIL CHUKTAH Southwestern Offshore Region PEP ALAK KEEK KAXAN YAXCHEN MAKECH AYIN TZOLOLKIN DZONOT LOLTUN YAABKAN CHUM UTZIL CITAM CHIKIN - 1 MAC YUMSIL SIKIL SINAN CHICHINI KELEM FOSA COMALCALCO MOAN KAYAB CEEH LE YAXILTUN MALOOB IB PAC UXMAL CHA ZAAP MITNAL MANIK OCNA AHAU ITZAMNA KUM BOLONTIKU KAB TSIMIN ATAMBIL - 1 COSACO TIZON TROJE TENGUAYALA CHANCASTE IXMINI LUNA HAMACA TURULETE PALAPA LUNA ALVARO PIJIJE CENIZO OBREGON ESCARBADO APANCO MACACO KOKAY TIXAN UECH KI ALUX CHEM MAY YUM Frontera OCH YUM LUCH MUKUY HAYABIL AJAL KAX YUM COSTERO ZEREQUE TOLOC OCH MISON 101 MISON ZINIC PICH KIX KANAAB ACANUN WACH - 1 RIBEREÑO CHUC Nak-1 GABANUDO BATAB POL THEL HOMOL-1 KOT - 1 TSOL - 1 CHE CHUKU A ETAIL - 1 CHACMOOL KU KUTZ IXTOC PEK BACAB LUM POK ABKATUN KAY ICH BOTS LUM EK LUX CANTARELL PECH XICALANGO BALAM CHAC TAKIN SAM NOHOCH NIX MANAB IXIM PETEN PALANCARES KULKUKAN Northeastern Offshore Region XOC CHILAM Cd. del Carmen TERMINOS LAGOON km N W E S km

53 N KI-101 W E S SINAN DL-1 SINAN-101A SINAN-201 CHEM-1A MUCUY-1 MISON-101 NAK-1 CHUKUA-1 SINAN-1A BOLONTIKU-1 MISON-1A CITAM-101 HAYABIL-1 BISEN-1 KIX-1A KIX-1 LEGEND COLLAPSE BRECCIA (DOLOMITE) TURBIDITIES DETRITUS FLOW YUM-1 MUDSTONE - WACKESTONE WITH PLANKTONIC FORAMINIFER YUM DOLOMITE UNIT MAY-1 COSTERO-1

54 4965 N-2 N-2 C 5000

55 N W E S Maloob Zaap Ku Pakal m 100 m 50 m Cd. del Carmen 25 m Dos Bocas Frontera Km

Ku-401 Ku-47 Pakal-1 Ku-89 V-2915-2965 m.

56 N W E S Pakal-1 Original Oil-Water Contact (3,244 mbsl) January 1981 Current Oil-Water Contact (3,190 mbsl) August km Ku-401 Ku-47 Pakal-1 Ku-89 V m. Qo= 6,421 bbld Current O.W.C. Original O.W.C. Thrust Fault Thrust Fault Autochthonous Block

57 L arive ra N W E S Gulf of Mexico Arenque-103 Arenque-104 Arenque-15 Arenque-33 Arenque-31 Arenque-41 Arenque-17 Arenque-2 Arenque-23D Arenque-19 Arenque Field Arenque 23 Náyade Well Macarela Km Tamaulipas Field Arenque-4 Arenque Field 200 Erizo-1 Tampico Lobina 1 Lobina km 0 50 km

58 Arenque-4 Lobina-1 Arenque Field Time (ms) Lobina-1 Arenque-4 Macarela-1 Erizo-1 B A A B

59 N W E S 0 1 2km

60 Jp Jp 3425 Jsa 3435 Jsa Basam. Basam. 3475

N W S E Camargo Camargo-1 Misión Misión-1001 Cañón Reynosa Sultán-1 Lomitas Garufa-1 Comitas Patriota-1 Caudaloso-1 Polvareda Dandi -1 Pascualito Torrecillas Reynosa Monterrey Orozco Chalupa-1

61 N W S E Camargo Camargo-1 Misión Misión-1001 Cañón Reynosa Sultán-1 Lomitas Garufa-1 Comitas Patriota-1 Caudaloso-1 Polvareda Dandi -1 Pascualito Torrecillas Reynosa Monterrey Orozco Chalupa-1 Cronos-1 Chapul Cuitláhuac Barreal-1 Nuevo Laredo Pípila Ternero Huizache Presa Falcón Reynosa Herreras Matamoros km Reynosa Camargo Gulf of Mexico Jabalina-1 Patriota-1 W E Time (ms) T.D.=3,530

62 0 Shc GR RT Øe 0 S/P Non Tested 2,765-2,782 m Ø=19.5 % Shcs=55.9 % PP3 PP3= 2,830-2,843 m Fract. 16/64 P= 4,150 psi Qg= MMcfd Qc= 134 bbld Qa= 0 bbld PP2 PP2= 2,912-2,925 m Fract. 16/64 P= 2,050 psi Qg= 3.00 MMcfd Qc= 24 bbld Qa= 5 bbld PP1 PP1= 3,033-3,042 m Fract. 12/64 P= 3,800 psi Qg= MMcfd Qc= 57 bbld

63 N W E S Reynosa Reynosa Project Reynosa Field Monterrey Field Presita Field Chapul Field San Luis Field 18 de Marzo Field Nutria Field Huizache Field Gulf of Mexico Nejo km

64 N W E S Afro-1 Negritos-31 Negritos-1 Nejo km 30 Shc 0 0 GR RT Phie 0

N W S E Camargo Misión Camargo-1 Dragón-1 Misión-1001 Cañón Reynosa Garufa-1 Comitas Lomitas Sultán-1 Caudaloso-1 Polvareda Dandi -1 Pascualito Torrecillas Reynosa Monterrey Orozco

65 N W S E Camargo Misión Camargo-1 Dragón-1 Misión-1001 Cañón Reynosa Garufa-1 Comitas Lomitas Sultán-1 Caudaloso-1 Polvareda Dandi -1 Pascualito Torrecillas Reynosa Monterrey Orozco Chalupa-1 Cronos-1 Chapul Cuitláhuac Barreal-1 Nuevo Laredo Pípila Ternero Huizache Presa Falcón Reynosa Herreras Matamoros Reynosa Camargo Gulf of Mexico Dragón-1 W E 2 Time (s) Sand 3573

66 N W E S Chilarillo-1 Ferreiro-3 Ferreiro-2 Dragón-1 Industrial-1 Loc. Dragón-101 Draker-1 San Jacinto km

67 0 Shc GR RT Øe 0 PP3 ( m) FRACT. 16/64", P= 4850 psi, Qg= MMcfd, Qa= 64 bbld 3575 PP N-1

68 + Vacas Casa Roja Piedras Niegras + W N E Tamaulipas Platform S Minero Garza Pirineo-1 Merced Nuevo Laredo U.S.A. Monclova Buena Suerte Lampazos Sabinas Basin Viernes-1 Presa Falcón Dragón-1 Reynosa Matamoros Patriota-1 Herreras Granaditas-1 Reynosa Ita-1 Burgos Basin Ecatl-1 Camargo Nejo km N W E S Pirineo km

Pirineo-1 500 1000 Time (ms) 1500 2000 2500 3000 0 GR 150 1950 2000 100 Sw 0 0 RT 2000 30

69 Pirineo Time (ms) GR Sw 0 0 RT Øe 0 Int m P= 222 Kg/cm² Est.: 26/64 Qg= 12.7 mmpcd MMcfd

70 N Veracruz Anegada-1 Aneg-3 Aneg-2 W S E Gulf of Mexico Tres Higueras Cópite Camaronero-1A Manuel Rodríguez A. Camaronero Cube Vistoso-1 Matapionche Mata Espino Playuela Cube Tlalixcoyan-1 Playuela-1 Blanco-2 Alvarado Mecayucan Cuatas-1 Cocuite Angostura Acatlán Lizamba-1 V. Camalote Perdiz Mata Gallina Guinea-1 Tierra Blanca Estanzuela-1 Chalpa-1 San Pablo Rincón Pacheco Mirador Miguel Alemán Dam Colorín Gloria Veinte Novillero 0 50 Km Vistoso-1 Playuela-301 Camaronero Cube Playuela Cube

N SW Vistoso-1 Vistoso-13 NE W E Vistoso-31

Vistoso-12 Vistoso-43 Depth (m) Vistoso-63 2300

Saturation Porosity Pay Litology 0 100 MD 0.

71 N SW Vistoso-1 Vistoso-13 NE W E Vistoso-31 L1346 S Vistoso-11 Vistoso Vistoso-1 Vistoso-12 Vistoso-43 Depth (m) Vistoso km L1346 Correlation Resistivity Saturation Porosity Pay Litology MD N Qgi= 5.8 MMcfd 6m 4m

72 N Veracruz Anegada-1 Aneg-2 Aneg-3 W S E Gulf of Mexico Tres Higueras Cópite Camaronero-1A Manuel Rodríguez A. Camaronero Cube Vistoso-1 Matapionche Mata Espino Playuela Cube Tlalixcoyan-1 Playuela-1 Blanco-2 Alvarado Mecayucan Cuatas-1 Acatlán Angostura Apértura-1 Cocuite Lizamba-1 V. Camalote Perdiz Mata Gallina Guinea-1 Tierra Blanca Estanzuela-1 Chalpa-1 San Pablo Rincón Pacheco Mirador Colorín Gloria Veinte Miguel Alemán Dam Novillero 0 50 Km

73 Apértura-1 MM1 MM2 E 2 W 2.5 Time (s) N E O S N E O S Apértura-1 MM1 MM2 N E W S N E W S Apértura km km 0

MD 3050 3025 MM1 MM2 3050 3025 3056 3053

74 MD MM1 MM Correlation Resistivity Nphi Rhob 0.2 MD 0 Correlation Resistivity Nphi Rhob 0.2 MD

N W S E Gulf of Mexico Xicalango Ciudad del Carmen Frontera Espadañal Narváez Nuevos Lirios Boca del Toro Laguna Alegre Trompo San Román Usumacinta Mangar Tamulté Tasajero Almendro Ojillal Chinal

75 N W S E Gulf of Mexico Xicalango Ciudad del Carmen Frontera Espadañal Narváez Nuevos Lirios Boca del Toro Laguna Alegre Trompo San Román Usumacinta Mangar Tamulté Tasajero Almendro Ojillal Chinal Cantemoc Campeche Hormiguero Zaragoza Cobo Villahermosa Chilapilla-José Colomo Guiro Bitzal Morales Vernet Cafeto Cd. Pemex Guanal Jimbal Acachú Tepetitán Shishito-1 Fortuna Nal. Sarlat Acahual Macuspana Macuspana Medellín Chiapas Tabasco 0 20 Km Shisito-3 Shisito-2 Shisito-1 Shisito Oil Producing Well Drilling Well Location

76 Shishito A Fortuna Nacional Depth (m)

N W E H. Cárdenas Villahermosa S EDEN A. PRIETO ROSARIO CUATAJAPA JUJO-TECO JACINTO FENIX CHIRIMOYO IRIS JOLOTE PIGUA TEPEYIL PAREDON PLATANAL COMPLEJO A.J.BERMUDEZ CACTUS NISPERO DORADO RIO NUEVO JUSPI A.

77 N W E H. Cárdenas Villahermosa S EDEN A. PRIETO ROSARIO CUATAJAPA JUJO-TECO JACINTO FENIX CHIRIMOYO IRIS JOLOTE PIGUA TEPEYIL PAREDON PLATANAL COMPLEJO A.J.BERMUDEZ CACTUS NISPERO DORADO RIO NUEVO JUSPI A. ZANAPA SITIO GRANDE TEPATE LOPEZ TAPIJULAPA AGAVE MUNDO NUEVO ARTESA COMOAPA SABANCUY COPANO CHIAPAS GIRALDAS SUNUAPA GAUCHO MUSPAC TOPEN ACUYO CARMITO SECADERO Teapa CHILAPILLA Cd. Pemex CAFETO GUIRO C.GUANAL VERNET MORALES Macuspana JIMBAL C. ACAHUAL FORTUNA NAL. SARLA T MEDELLIN J. COLOMO TRIUNFO-3 ACACHU TEPETITAN Palenque CHINTUL CATEDRAL Simojovel Project Sierra de Chiapas Malva km

78 Malva N E W S 0 5 km

79 Oil Producing Interval Qo=726 bbld Qg=1.1 Mcfd Est. 28/64 N O E S Golfo de México Tizón Chopo Naranja-1 Ampliación Gualas Gualas Canela km

80 N Block V I W S E Block V Naranja km

Effective Porosity 15 % 10% 5% 0 5150 Producing 5170 Qo= 3228 bbld Qg= 9.

81 Effective Porosity 15 % 10% 5% Producing 5170 Qo= 3228 bbld Qg= 9.70 Mcfd Qw=405 bbld RGA=535 m 3 /m 3 Est. 1/2 Pwf= 529 kg/cm 2 T= 151 C 5200

83 1P 2P 3P percentage

84 Region Northeastern Offshore Southwestern Offshore Northern Southern Cantarell Ek-Balam Ku-Maloob-Zaap Abkatún Pol-Chuc Litoral de Tabasco Altamira Poza Rica Burgos Veracruz Bellota-Chinchorro Jujo-Tecominoacán Chilapilla-José Colomo Cinco Presidentes Muspac Samaria-Sitio Grande Luna Cantarell Ku-Maloob-Zaap Abkatún-Pol-Chuc Litoral de Tabasco Poza Rica-Altamira Burgos Veracruz Bellota-Jujo Macuspana Cinco Presidentes Muspac Samaria-Luna

85 N United States of America W E S Baja California Norte Sonora Chihuahua Coahuila Baja California Sur Sinaloa Durango Nuevo León Gulf of Mexico Pacific Ocean Zacatecas Tamaulipas San Luis Potosí Nayarit Aguascalientes Guanajuato Veracruz Jalisco Querétaro Hidalgo México Colima Michoacán D.F. Tlaxcala Morelos Puebla Tabasco Northeastern Offshore Region Campeche Yucatán Quintana Roo Guerrero Oaxaca Chiapas Belize Guatemala Honduras Km El Salvador

86 N W S E Gulf of Mexico Ku-Maloob-Zaap Integral Business Unit Tunich Zazil-Ha Maloob Bacab Lum 2170 Zaap Ku Kutz Ixtoc Pok-1 Cantarell Ek Balam Cantarell Integral Business Unit Chac Takín-101 Takín m m 50 m 25 m Dos Bocas Frontera km Cd. del Carmen 2050

88 Proved Probable Possible MMbbl , , , , , , , , , , , , Bcf Proved Probable Possible , , , , , , , , ,437.4

91 MMboe 1, , ,906.0 Cantarell Ku-Maloob- Zaap Total

92 MMboe 19, , , , , ,550.6 Dry Gas Equivalent Plant Liquids Condensate 15, ,040.2 Crude Oil Additions Revisions Developments Production 2004 MMboe MMboe 1, , , , ,777.5 Ku-Maloob- Zaap Cantarell Total Cantarell Ku-Maloob- Zaap Total

94 N United States of America W E S Baja California Norte Sonora Chihuahua Coahuila Gulf of Mexico Baja California Sur Sinaloa Durango Zacatecas Nuevo León Tamaulipas Southwestern Offshore Region Pacific Ocean San Luis Potosí Nayarit Aguascalientes Guanajuato Veracruz Jalisco Querétaro Hidalgo México Colima Michoacán D.F. Tlaxcala Morelos Puebla Tabasco Yucatán Quintana Roo Campeche Guerrero Oaxaca Chiapas Belize Guatemala Honduras Km El Salvador

95 N W E S Gulf of Mexico 2170 Manik Taratunich 200 m 100 m Ayín Litoral de Tabasco Integral Business Unit Citam Alux Sinán 1A Kab Kax Uech Ki 101A Bolontiku 101 Och Hayabil-1 Yum 2-B 401 Ixtal Toloc Batab Misón Kix Pol Chuc Abkatún Kay Caan Abkatún-Pol-Chuc Integral Business Unit m 25 m Yaxché Dos Bocas May Frontera km Cd. del Carmen 2050

97 Proved Probable Possible MMbbl , , , , , , , Bcf Proved Probable Possible , , , , , , , , , , , ,926.7

100 MMboe , Abkatún- Pol-Chuc Litoral de Tabasco Total

101 MMboe Abkatún- Pol-Chuc Litoral de Tabasco Total , Plant Liquids Condensate Dry Gas Equivalent Crude Oil , , , , , , , ,202.6 Developments MMboe Additions Production Revisions

102 MMboe 1, ,549.1 Litoral de Tabasco Abkatún- Pol-Chuc Total

103 N United States of America W E S Baja California Norte Sonora Chihuahua Coahuila Baja California Sur Sinaloa Durango Nuevo León Northern Region Gulf of Mexico Zacatecas Tamaulipas Pacific Ocean San Luis Potosí Nayarit Aguascalientes Guanajuato Veracruz Jalisco Querétaro Hidalgo México Colima Michoacán D.F. Tlaxcala Morelos Puebla Tabasco Yucatán Quintana Roo Campeche Guerrero Oaxaca Chiapas Belize Guatemala Honduras Km El Salvador

104 N United States of America W E S Baja California Norte Sonora Chihuahua Coahuila Burgos Integral Business Unit Baja California Sur Sinaloa Durango Nuevo León Zacatecas Tamaulipas Gulf of Mexico San Luis Potosí Pacific Ocean Aguascalientes Nayarit Altamira-Poza Rica Integral Business Unit Veracruz Guanajuato Querétaro Jalisco Hidalgo México Michoacán D.F. Tlaxcala Colima Morelos Puebla Veracruz Integral Business Unit Tabasco Yucatán Quintana Roo Campeche Guerrero Oaxaca Chiapas Belize Guatemala Honduras Km El Salvador

105

106 Bcf Possible Probable Proved 39, , , , , , , , , , , , Possible Probable Proved MMbbl 13, , , , , , , , , ,

107

108

109 MMboe 21, , , , , , , ,129.2 Dry Gas Equivalent , , , , Plant Liquids Condensate 13, , , ,195.5 Crude Oil Additions Revisions Developments Production 2004

110 1,278.4 MMboe ,768.6 Veracruz Total Burgos Poza Rica- Altamira 9, ,450.2 Poza Rica- Altamira Veracruz Total Burgos MMboe

111 MMboe 9, ,666.1 Poza Rica- Altamira Burgos Veracruz Total

112 N United States of America W E S Baja California Norte Sonora Chihuahua Coahuila Baja California Sur Sinaloa Durango Nuevo León Zacatecas Tamaulipas Gulf of Mexico Pacific Ocean San Luis Potosí Nayarit Aguascalientes Guanajuato Veracruz Jalisco Querétaro Hidalgo México Colima Michoacán D.F. Tlaxcala Morelos Puebla Guerrero Oaxaca Tabasco Southern Region Chiapas Yucatán Quintana Roo Campeche Belize Guatemala Honduras Km El Salvador

113 Km Villahermosa Chiapas Oaxaca Palenque Campeche Ocosingo Tabasco Veracruz Coatzacoalcos Muspac Cinco Presidentes Bellota- Jujo Macuspana Samaria- Luna N S W E Frontera

114

115

116 Proved Probable Possible MMbbl , , , , , , Bcf Proved Probable Possible , , , , , , , , , , , ,463.7

117

118

119

120 1, , , ,611.3 Plant Liquids Condensate Dry Gas Equivalent Crude Oil , , , , , , , , , , , ,584.1 Developments MMboe Additions Production Revisions MMboe 1,775.8 Bellota- Jujo 2,692.1 Samaria- Luna Muspac 5,756.3 Total Macuspana Cinco Presidentes

121 Cinco Presidentes Macuspana Total MMboe Bellota- Jujo Muspac Samaria- Luna Macuspana Total MMboe Cinco Presidentes Muspac Samaria- Luna Bellota- Jujo

122

123

124

125

126

127

128

129

130

131

132 Pemex Exploración y Producción Hydrocarbon Reserves as of January 1, Original Volume Remaining Hydrocarbon Reserves Remaining Gas Reserves Crude Oil Natural Gas Oil Equivalent Crude Oil Condensate Plant Dry Gas Natural Gas Dry Gas Liquids* Equivalent** MMbbl Bcf MMbbl MMbbl MMbbl MMbbl MMboe Bcf Bcf Total (3P) 275, , , , , , , ,008.3 Northeastern Offshore 52, , , , , ,805.2 Southwestern Offshore 19, , , , , ,258.6 Northern 165, , , , , , , ,877.5 Southern 37, , , , , , , ,067.1 Proved 142, , , , , , , ,850.6 Northeastern Offshore 51, , , , , ,749.7 Southwestern Offshore 15, , , , , ,354.5 Northern 39, , , , ,565.3 Southern 36, , , , , , ,181.0 Probable 82, , , , , , ,986.0 Northeastern Offshore , , , Southwestern Offshore 2, , , , ,143.5 Northern 79, , , , , , ,940.1 Southern , , P 225, , , , , , , ,836.6 Northeastern Offshore 51, , , , , ,528.0 Southwestern Offshore 18, , , , , ,498.0 Northern 118, , , , , , ,505.5 Southern 37, , , , , , , ,305.1 Possible 50, , , , , , , ,171.7 Northeastern Offshore 1, , , Southwestern Offshore 1, , , , ,760.6 Northern 47, , , , , , ,372.0 Southern , * Gas liquids from processing plants. ** The liquid obtained supposes a heat value equivalent to the Maya crude oil and an average mixture of the dry gas obtained at Cactus, Ciudad Pemex and Nuevo Pemex GPC. Note: All the units are expressed at atmospheric conditions and assume 15.6 C and 14.7 lb of pressure per square inch.

133 Pemex Exploración y Producción Hydrocarbon Production Cumulative Production as of January 1, 2004 Crude Oil Natural Gas Crude Oil Natural Gas Crude Oil Natural Gas Crude Oil Natural Gas MMbbl Bcf MMbbl Bcf MMbbl Bcf MMbbl Bcf Total 1, , , , , , , ,510.7 Northeastern Offshore , ,143.6 Cantarell , ,177.2 Ku-Maloob-Zaap , Southwestern Offshore , ,191.1 Abkatún-Pol-Chuc , ,802.6 Litoral de Tabasco Northern , ,547.9 Burgos ,091.0 Poza Rica-Altamira , ,355.3 Veracruz ,101.6 Southern , ,628.1 Bellota-Jujo , ,957.2 Cinco Presidentes , ,002.4 Macuspana ,266.3 Muspac , ,548.0 Samaria-Luna , ,854.2 Note: All the units are expressed at atmospheric conditions and assume 15.6 C and 14.7 lb of pressure per square inch.

134 Pemex Exploración y Producción, Northeastern Offshore Region Hydrocarbon Reserves as of January 1, Original Volume Remaining Hydrocarbon Reserves Remaining Gas Reserves Crude Oil Natural Gas Oil Equivalent Crude Oil Condensate Plant Dry Gas Natural Gas Dry Gas Liquids* Equivalent** MMbbl Bcf MMbbl MMbbl MMbbl MMbbl MMboe Bcf Bcf Total (3P) 52, , , , , ,805.2 Cantarell 38, , , , , ,682.4 Ku-Maloob-Zaap 14, , , , , ,122.8 Proved 51, , , , , ,749.7 Cantarell 37, , , , , ,120.1 Ku-Maloob-Zaap 13, , , , Probable , , , Cantarell , , Ku-Maloob-Zaap , , P 51, , , , , ,528.0 Cantarell 37, , , , , ,437.9 Ku-Maloob-Zaap 13, , , , , ,090.1 Possible 1, , , Cantarell 1, , , Ku-Maloob-Zaap * Gas liquids from processing plants. ** The liquid obtained supposes a heat value equivalent to the Maya crude oil and an average mixture of the dry gas obtained at Cactus, Ciudad Pemex and Nuevo Pemex GPC. Note: All the units are expressed at atmospheric conditions and assume 15.6 C and 14.7 lb of pressure per square inch.

135 Pemex Exploración y Producción, Southwestern Offshore Region Hydrocarbon Reserves as of January 1, Original Volume Remaining Hydrocarbon Reserves Remaining Gas Reserves Crude Oil Natural Gas Oil Equivalent Crude Oil Condensate Plant Dry Gas Natural Gas Dry Gas Liquids* Equivalent** MMbbl Bcf MMbbl MMbbl MMbbl MMbbl MMboe Bcf Bcf Total (3P) 19, , , , , ,258.6 Abkatún-Pol-Chuc 14, , , , , ,039.5 Litoral de Tabasco 5, , , , , ,219.1 Proved 15, , , , , ,354.5 Abkatún-Pol-Chuc 13, , , Litoral de Tabasco 2, , Probable 2, , , , ,143.5 Abkatún-Pol-Chuc Litoral de Tabasco 1, , , P 18, , , , , ,498.0 Abkatún-Pol-Chuc 13, , , , Litoral de Tabasco 4, , , , , ,547.5 Possible 1, , , , ,760.6 Abkatún-Pol-Chuc Litoral de Tabasco 1, , , , ,671.6 * Gas liquids from processing plants. ** The liquid obtained supposes a heat value equivalent to the Maya crude oil and an average mixture of the dry gas obtained at Cactus, Ciudad Pemex and Nuevo Pemex GPC. Note: All the units are expressed at atmospheric conditions and assume 15.6 C and 14.7 lb of pressure per square inch.

136 Pemex Exploración y Producción, Northern Region Hydrocarbon Reserves as of January 1, Original Volume Remaining Hydrocarbon Reserves Remaining Gas Reserves Crude Oil Natural Gas Oil Equivalent Crude Oil Condensate Plant Dry Gas Natural Gas Dry Gas Liquids* Equivalent** MMbbl Bcf MMbbl MMbbl MMbbl MMbbl MMboe Bcf Bcf Total (3P) 165, , , , , , , ,877.5 Burgos , , , ,811.0 Poza Rica-Altamira 165, , , , , , , ,406.0 Veracruz , Proved 39, , , , ,565.3 Burgos , , ,793.2 Poza Rica-Altamira 38, , , , ,329.8 Veracruz , Probable 79, , , , , , ,940.1 Burgos 3.8 2, , ,333.6 Poza Rica-Altamira 79, , , , , , ,536.1 Veracruz P 118, , , , , , ,505.5 Burgos , , ,126.8 Poza Rica-Altamira 117, , , , , , ,865.9 Veracruz , Possible 47, , , , , , ,372.0 Burgos , , ,684.2 Poza Rica-Altamira 47, , , , , , ,540.1 Veracruz * Gas liquids from processing plants. ** The liquid obtained supposes a heat value equivalent to the Maya crude oil and an average mixture of the dry gas obtained at Cactus, Ciudad Pemex and Nuevo Pemex GPC. Note: All the units are expressed at atmospheric conditions and assume 15.6 C and 14.7 lb of pressure per square inch.

137 Pemex Exploración y Producción, Southern Region Hydrocarbon Reserves as of January 1, Original Volume Remaining Hydrocarbon Reserves Remaining Gas Reserves Crude Oil Natural Gas Oil Equivalent Crude Oil Condensate Plant Dry Gas Natural Gas Dry Gas Liquids* Equivalent** MMbbl Bcf MMbbl MMbbl MMbbl MMbbl MMboe Bcf Bcf Total (3P) 37, , , , , , , ,067.1 Bellota-Jujo 10, , , , , ,187.7 Cinco Presidentes 6, , Macuspana , , ,293.2 Muspac 6, , , , ,301.1 Samaria-Luna 12, , , , , ,937.4 Proved 36, , , , , , ,181.0 Bellota-Jujo 10, , , , , ,926.4 Cinco Presidentes 6, , Macuspana , Muspac 6, , , ,693.3 Samaria-Luna 12, , , , , ,685.1 Probable , ,124.1 Bellota-Jujo Cinco Presidentes Macuspana Muspac Samaria-Luna P 37, , , , , , , ,305.1 Bellota-Jujo 10, , , , , ,121.1 Cinco Presidentes 6, , Macuspana , , ,013.9 Muspac 6, , , , ,021.9 Samaria-Luna 12, , , , , ,886.3 Possible , Bellota-Jujo Cinco Presidentes Macuspana Muspac Samaria-Luna * Gas liquids from processing plants. ** The liquid obtained supposes a heat value equivalent to the Maya crude oil and an average mixture of the dry gas obtained at Cactus, Ciudad Pemex and Nuevo Pemex GPC. Note: All the units are expressed at atmospheric conditions and assume 15.6 C and 14.7 lb of pressure per square inch.

Hydrocarbon Reserves of Mexico

Hydrocarbon Reserves of Mexico Evaluation as of January 1, 2005 Original Volume of Total Hydrocarbons in Place Original Volume of Undiscovered Hydrocarbons Original Volume of Discovered Hydrocarbons