Crude Oil and gas reserves, 2012

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 31 1.5 Investment 25 03 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 42 05 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 59 11 1.6 Statistics on safety and environmental protection 5.6 Average end-user prices of selected petrochemicals 1.7 Employees 32 04 Refining 4.1 Refining capacity 50 06 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 64 2.2 Crude Oil and gas reserves, 2012 4.4 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, 2011 6.5 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 2.9 2.10 2.11 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 7.1 2012 proved oil reserves, selected countries 7.2 2011 proved natural gas reserves, selected countries 7.3 2011 oil production, selected countries 7.4 2011 natural gas production, selected countries 7.5 2010 atmospheric distillation capacity, top petroleum companies 7.6 2010 top petroleum companies by crude oil production 7.7 2010 top petroleum companies by natural gas production 7.8 2010 top petroleum companies by sales Glossary and Nomenclature

Lázaro Cárdenas refinery 2011 Infrastructure of the Mexican Petroleum Industry Producing fields Producing wells (annual average) Offshore platforms 416 8 315 236 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 20 20 9 6 14 6 8 39 18 77 11 1 360 525 5 01 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 31 1.5 Investment 1.6 Statistics on safety and environmental protection 1.7 Employees Petróleos Mexicanos

1.1 Summary of Consolidated operating statistics Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Production (Mbd) Liquid hydrocarbons 3 560 3 585 3 789 3 825 3 760 3 683 3 471 3 157 2 971 2 953 2 934-0.6 Crude oil 3 127 3 177 3 371 3 383 3 333 3 256 3 076 2 792 2 601 2 576 2 550-1.0 Condensates and Liquids a 433 408 418 442 426 427 395 366 370 377 384 1.8 Natural gas (MMcfd) 4 511 4 423 4 498 4 573 4 818 5 356 6 058 6 919 7 031 7 020 6 594-6.1 Crude oil processing 1 252 1 245 1 286 1 303 1 284 1 284 1 270 1 261 1 295 1 184 1 167-1.5 Refined products b 1 473 1 481 1 556 1 587 1 554 1 546 1 512 1 491 1 525 1 416 1 379-2.6 Petrochemicals c (Mt) 10 377 9 880 10 298 10 731 10 603 10 961 11 757 11 973 11 956 13 188 12 384-6.1 8000 7000 6000 5000 4000 3000 2000 Natural gas production million cubic feet per day Domestic sales Volume (Mbd) Refined products d 1 712 1 658 1 684 1 718 1 771 1 762 1 816 1 826 1 771 1 762 1 786 1.4 LPG 325 332 327 328 314 306 301 292 281 288 285-1.1 Motor gasolines 551 565 600 636 671 718 760 792 792 802 799-0.3 Jet fuel 55 53 54 58 59 61 68 65 55 56 56 0.6 Diesel 276 271 295 303 320 345 358 382 359 371 384 3.4 Fuel oil 475 406 355 332 341 264 257 220 209 185 201 8.5 Others 30 31 53 61 66 68 71 76 75 60 62 2.6 Dry gas (MMcfd) 1 993 2 425 2 622 2 756 2 634 2 952 3 064 3 086 3 119 3 255 3 385 4.0 Petrochemicals c (Mt) 3 495 3 295 3 181 3 568 3 795 3 870 4 041 4 191 4 064 4 214 4 281 1.6 1000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 800 700 600 Domestic sales of automotive gasolines thousand barrels per day 3 Value (millon pesos) Refined products d 171 139 161 213 222 821 296 219 373 383 433 565 473 571 542 687 512 720 584 355 679 236 16.2 LPG 29 327 26 137 36 856 42 663 48 531 52 706 54 456 55 972 49 461 53 386 57 981 8.6 Motor gasolines 71 609 69 756 99 228 144 982 184 651 221 697 247 338 265 981 258 488 295 109 328 457 11.3 Jet fuel 5 682 5 194 7 229 10 951 16 241 18 897 23 369 31 936 18 321 22 935 31 560 37.6 Diesel 33 793 30 245 44 707 61 473 78 736 88 374 96 920 111 425 121 521 144 010 166 241 15.4 Fuel oil 27 653 26 709 30 896 31 529 39 521 43 299 42 396 61 670 51 908 56 767 80 265 41.4 Others 3 075 3 172 3 905 4 621 5 703 8 591 9 091 15 703 13 022 12 148 14 731 21.3 Dry gas 28 914 30 313 51 189 69 195 79 038 75 355 78 644 105 436 58 102 67 141 64 469-4.0 Petrochemicals c 9 601 8 452 12 425 19 221 23 386 24 659 25 970 33 427 24 054 32 102 38 110 18.7 500 400 300 200 100 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 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.

1.2 Summary of Consolidated operating statistics (continued) Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Foreign trade Volume (Mbd) Liquid hydrocarbons net exports 1 524 1 617 1 821 1 789 1 670 1 612 1 371 1 043 946 926 844-8.8 Crude oil exports 1 756 1 705 1 844 1 870 1 817 1 793 1 686 1 403 1 222 1 361 1 338-1.7 Refined products Exports e 104 156 177 153 187 188 180 192 243 193 185-4.2 Imports 335 244 200 234 334 369 495 553 519 627 678 8.1 Dry gas (MMcfd) Exports 25 4 - - 24 33 139 107 67 19 1-93.2 Imports 292 592 757 766 480 451 386 447 422 536 791 47.6 Petrochemicals (Mt) Exports 780 832 813 914 867 818 693 587 741 677 458-32.3 Imports 128 197 95 105 239 254 270 250 388 268 101-62.2 Value (millon dollars) Crude oil exports 11 928 13 392 16 676 21 258 28 329 34 707 37 937 43 342 25 605 35 985 49 322 37.1 Refined products Exports e 856 1 182 1 614 1 947 2 991 3 595 4 052 5 537 4 657 4 764 6 188 29.9 Imports 3 656 2 495 2 423 3 792 7 859 10 029 15 797 21 893 13 308 20 335 29 404 44.6 Dry gas Exports 48 4 - - 79 72 351 316 103 32 2-95.1 Imports 424 775 1 526 1 715 1 398 1 135 996 1 424 633 939 1 272 35.5 Petrochemicals Exports 113 113 148 217 303 299 242 349 147 245 260 6.4 Imports 29 46 44 58 107 128 145 158 168 174 125-28.4 5 Prices (dollars per barrel) f Exports Crude oil 18.61 21.52 24.78 31.05 42.71 53.04 61.64 84.38 57.40 72.46 101.00 39.4 Istmo 22.27 23.48 28.08 38.04 53.11 57.29 69.92 81.09 63.38 78.63 106.22 35.1 Maya 17.19 20.89 24.13 29.82 40.61 51.10 60.38 82.92 56.22 70.65 98.80 39.9 Olmeca 23.96 24.87 29.32 39.34 53.91 64.67 70.89 99.37 65.79 79.58 109.83 38.0 LPG g 28.48 24.34 32.70 39.39 37.52 48.26 58.46 72.52 47.50 66.67 81.37 22.0 Jet fuel 29.20 27.43 32.41 45.17 67.95 82.58 83.70 123.65 69.03 88.07 123.53 40.3 Diesel 24.49 22.86 33.48 36.46 56.59 49.84 60.96 93.23 59.93 89.33 0.00-100.0 Fuel oil (high sulfur content) 11.69 17.71 18.14 18.17 19.20 37.73 44.70 51.94 51.47 63.50 89.15 40.4 Imports LPG 21.62 21.56 28.34 35.19 42.45 46.22 55.56 62.38 41.02 55.04 67.60 22.8 Gasolines 37.83 34.05 41.69 52.42 75.45 85.16 95.09 115.45 75.91 93.44 124.64 33.4 Fuel oil (low sulfur content) 23.01 26.01 29.31 34.79 43.00 54.55 62.10 96.17 65.96 74.67 106.25 42.3 Natural gas (US$/MMBtu) 3.92 3.48 5.38 5.95 7.77 6.68 6.91 8.48 4.01 4.68 4.29-8.2 e. Includes condensates from 2003 to 2006. f. Average prices. g. Includes components. La Cangrejera Petrochemical Center

1.3 Income statements a Millions of mexican pesos (million 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 dollars) c Total sales 445 330 481 437 625 429 773 587 928 643 1 062 495 1 136 035 1 328 950 1 089 921 1 282 064 1 558 429 111 393 Domestic sales 303 853 314 271 387 237 449 013 505 109 546 738 592 048 679 754 596 370 683 853 779 198 55 695 Export sales 141 477 167 166 238 192 324 574 423 534 515 757 542 927 644 418 488 260 592 908 772 965 55 250 Services income - - - - - - 1 061 4 778 5 292 5 303 6 266 448 Cost of sales 165 315 157 802 207 118 264 106 361 177 403 106 460 666 654 032 561 135 631 355 780 626 55 797 Gross income 280 015 323 635 418 311 509 481 567 466 659 389 675 370 674 918 528 786 650 709 777 803 55 596 General expenses 41 613 47 105 50 744 54 280 68 711 78 041 84 939 103 806 100 509 104 253 96 378 6 889 Transportation and distribution expenses 13 588 14 962 15 549 17 574 21 911 24 019 24 799 33 962 31 856 33 274 31 349 2 241 Administrative expenses 28 025 32 143 35 195 36 706 46 800 54 022 60 141 69 844 68 653 70 979 65 029 4 648 Operating income 238 402 276 530 367 567 455 201 498 755 581 348 590 431 571 112 428 277 546 457 681 425 48 707 Gral. Lázaro Cárdenas refinery Other revenues (expenses) -net- 5 405 342 2 961 11 154 11 837 69 742 83 019 197 991 40 293 71 586 195 545 13 977 Comprehensive financing cost b - 13 104-13 773-30 742-7 048-4 479-22 983-20 047-107 512-15 308-11 969-91 641-6 550 800000 700000 Income* and taxes millions of mexican pesos 10 Participation in Subsidiaries and Associates' Results - - - - - - 5 545-1 965-1 291 1 541-796 - 57 600000 500000 5 Income before taxes and duties 230 703 263 098 339 785 459 308 506 112 628 107 658 948 659 625 451 971 607 613 784 532 56 076 400000 Hydrocarbon extraction duties and other 168 264 179 099 288 366 419 629 560 415 582 855 677 256 771 702 546 633 654 141 876 016 62 615 Special tax on production and services 95 199 114 491 94 076 54 705 20 214 - - - - - - - 300000 200000 100000 Income Net income - 34 091-30 492-40 644-25 496-76 282 45 252-18 309-112 076-94 662-46 527-91 483-6 539 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 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. 13.9904 = US$1.00.

Balance sheet as of December 31 a Million pesos (million 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 dollars) b Total assets 556 883 697 379 845 472 947 527 1 042 560 1 204 734 1 330 281 1 236 837 1 332 037 1 395 197 1 533 345 109 600 Current assets 76 534 123 654 171 027 243 616 292 763 384 924 428 561 364 292 349 697 315 911 357 470 25 551 Properties, plant and equipment 406 913 486 098 539 219 594 569 643 236 710 488 793 846 845 062 967 592 1 061 388 1 152 506 82 378 Others 73 436 87 627 135 226 109 343 106 561 109 322 107 874 27 483 14 749 17 898 23 369 1 670 Total liabilities 434 017 596 684 799 611 914 184 1 069 430 1 164 781 1 280 373 1 209 952 1 398 877 1 506 499 1 727 264 123 461 Short term liabilities 71 948 113 771 136 916 140 483 164 476 169 927 289 464 175 965 242 960 207 254 253 470 18 117 Long term liabilities 362 069 482 913 662 695 773 702 904 954 994 854 990 909 1 033 987 1 155 917 1 299 245 1 473 794 105 343 Equity 122 866 100 696 45 861 33 343-26 870 39 954 49 908 26 885-66 840-111 302-193 919-13 861 Certificates of contribution 10 222 10 222 82 620 86 909 89 805 93 445 96 958 96 958 96 958 96 958 96 958 6 930 Restatement of equity 181 838 190 523 130 258 132 342 144 333 154 101 178 532 - - - - - Accumulated net income (losses) - 85 473-109 855-167 017-211 570-305 539-287 786-317 174-261 840-356 502-397 473-488 956-34 949 Others 16 279 9 804-25 662 44 531 80 193 91 592 191 767 192 704 189 213 198 079 14 158 Total liabilities and equity 556 883 697 380 845 472 947 528 1 042 560 1 204 735 1 330 281 1 236 837 1 332 037 1 395 197 1 533 345 109 600 6 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. 13.9904 = US$1.00. Cactus Gas Processing Center

Investment a Million pesos (millios 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 dollars) c Total 62 938 80 759 113 687 122 863 126 988 150 397 170 111 201 740 251 882 268 514 267 204 19 099 Non-PIDIREGAS b 26 993 22 943 19 013 12 243 21 436 20 130 17 573 23 773 251 882 268 514 267 204 19 099 PIDIREGAS 35 945 57 816 94 674 110 620 105 552 130 267 152 538 177 967 - - - - Pemex-Exploration and Production 53 446 63 000 88 380 113 332 112 863 130 071 148 761 178 104 226 802 239 409 235 929 16 864 Non-PIDIREGAS b 17 501 13 443 8 945 3 694 11 040 8 142 6 992 8 261 226 802 239 409 235 929 16 864 PIDIREGAS 35 945 49 557 79 435 109 638 101 823 121 929 141 769 169 844 - - - - Pemex-Refining 5 501 14 077 19 878 5 092 9 001 15 229 15 979 17 379 18 526 22 551 25 135 1 797 Non-PIDIREGAS b 5 501 5 893 5 744 4 647 6 542 7 369 7 124 10 580 18 526 22 551 25 135 1 797 PIDIREGAS 8 184 14 134 445 2 459 7 861 8 855 6 800 - - - - Pemex-Gas and Basic Petrochemicals 2 567 1 796 3 253 2 498 3 206 3 322 4 004 4 203 3 941 3 887 2 997 214 Non-PIDIREGAS b 2 567 1 721 2 148 1 961 1 936 2 845 2 308 2 889 3 941 3 887 2 997 214 PIDIREGAS 75 1 105 537 1 270 477 1 696 1 314 - - - - Pemex-Petrochemicals 1 058 1 454 1 627 1 598 1 530 1 426 1 139 1 614 2 053 2 462 2 425 173 Non-PIDIREGAS b 1 058 1 454 1 627 1 598 1 530 1 426 922 1 604 2 053 2 462 2 425 173 PIDIREGAS - - - - - - 217 10 - - - - 7 Petróleos Mexicanos Corporate 366 432 549 343 388 349 227 439 560 206 717 51 Non-PIDIREGAS b 366 432 549 343 388 349 227 439 560 206 717 51 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. 13.9904 = US$1.00. La Cangrejera Petrochemical Center

Statistics on safety and environmental protection 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Frequency index ( number of disabling accidents per million of man-hours worked) Petróleos Mexicanos 1.00 1.17 1.09 1.50 1.06 0.67 0.59 0.47 0.42 0.42 0.54 Pemex-Exploration and Production 1.26 1.14 1.35 1.67 1.26 0.96 1.22 0.74 0.72 0.43 0.39 Pemex-Refining 0.69 1.10 0.63 1.23 1.16 0.59 0.27 0.24 0.32 0.66 0.80 Pemex-Gas and Basic Petrochemicals 0.50 1.01 0.92 0.38 0.26 0.07 0.10 0.53 0.10 0.18 0.20 Pemex-Petrochemicals 0.56 0.88 1.13 2.00 1.13 0.70 0.48 0.80 0.45 0.29 0.68 Petróleos Mexicanos 1.86 1.79 1.54 1.85 0.71 0.42 0.07 0.12 0.07 0.09 0.48 Severity index (number of lost workdays per million of man-hours worked) Petróleos Mexicanos 93 96 96 100 67 31 26 27 26 25 29 Pemex-Exploration and Production 140 126 92 107 78 42 52 41 44 30 30 Pemex-Refining 50 92 78 89 73 30 15 17 17 36 39 Pemex-Gas and Basic Petrochemicals 79 48 184 137 56 9 2 44 13 23 18 Pemex-Petrochemicals 132 108 146 151 80 40 25 43 31 11 28 Petróleos Mexicanos 52 40 51 53 27 11 2 4 3 4 14 2.5 2.0 1.5 1.0 Accidente frecuency index Environmental protection Sulfur oxide emissions (SOx) (t/mt) 2.15 1.49 1.65 1.49 1.25 1.48 1.62 2.60 2.87 2.11 1.60 Carbon dioxide emissions (CO2) (t/mt) 125 111 117 112 90 114 124 150 165 149 139 Total discharges to water (kg/mt) 13.19 9.16 7.61 6.39 6.35 6.99 7.71 7.27 11.70 8.80 10.65 Disposal of hazardous waste a (%) 77.00 84.80 97.99 98.19 158.20 62.59 162.07 149.36 108.28 110.41 110.18 Leakage and spills b Events 1 249 839 791 338 399 404 392 329 216 203 267 Volume (t) 8 031 19 995 9 570 5 488 3 528 3 434 14 992 1 970 7 033 27 971 3 305 0.5 0.0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 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) 303 308 432 440 443 464 656 754 805 939 968 Clean industry certificates (accrued) 279 297 345 369 369 377 422 461 570 609 719 (d) ISO 9000 c 318 159 89 52 46 41 43 43 37 16 18 ISO 14000 c 44 46 41 36 29 29 28 28 23 20 22 a. Includes stock changes in calculation of hazardous residual generation. A volume 7.8% greater than generated was disposed in 2005. 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 2004. 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

Employees Number at year end 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Total 134 852 137 134 138 215 137 722 139 171 141 275 141 146 143 421 145 146 147 368 150 561 Pemex-Exploration and Production 43 208 44 658 46 322 47 975 48 371 48 767 49 045 50 273 50 544 49 802 51 713 Pemex-Refining 47 710 47 341 46 692 44 899 45 335 45 494 44 811 45 510 43 706 45 306 46 909 Pemex-Gas and Basic Petrochemicals 11 716 11 977 12 104 11 923 12 018 12 562 12 397 12 976 12 550 12 327 11 918 Pemex-Petrochemicals 14 578 14 360 14 203 13 895 13 939 14 045 13 823 14 028 13 447 13 542 13 541 Pemex-Corpotative a 6 895 7 935 8 024 8 175 8 411 9 198 9 396 9 015 12 991 14 254 14 192 Medical services 10 745 10 863 10 870 10 855 11 097 11 209 11 674 11 619 11 908 12 137 12 288 a. Pemex-Corporative includes Telecommunications employees. 9 Ku-Sierra

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

KU-S Offshore Platform 2011 Production Crude oil (Mbd) Natural gas (MMpcd) 2 550 6 594 Infrastructure (At the end of the year) Producing fields Producing wells (annual average) Offshore platforms 416 8 315 238 Pipelines (km) Crude oil Natural gas 4 852 7 656 Proved reserves (MMbcoe) (as of January 1 st, 2012) Crude oil Gas liquids Natural gas 10 025 1 337 2 448 12 02 2.1 Hydrocarbon reserves and production 2.2 Crude Oil and gas reserves, 2012 2.3 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

2.1 Hydrocarbon reserves and production a Million barrels of crude oil equivalent 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Total 56 154.0 52 951.0 50 032.2 48 041.0 46 914.1 46 417.5 45 376.3 44 482.7 43 562.6 43 074.7 43 073.6 43 837.3 Northeastern Marine Region 19 449.9 18 589.2 16 947.0 15 550.6 14 781.6 15 193.5 14 086.0 13 357.7 12 785.9 12 097.2 12 081.3 12 526.3 Southwestern Marine Region 5 202.6 4 837.4 4 575.4 4 421.9 4 488.6 4 043.5 4 647.0 4 759.9 5 189.4 6 010.8 6 383.7 7 054.4 Southern Region 9 584.1 8 481.2 7 720.1 7 183.6 6 837.9 6 641.4 6 246.3 6 216.1 5 862.5 5 824.3 5 724.9 5 567.7 Northern Region 21 917.4 21 043.3 20 789.7 20 884.9 20 806.1 20 539.1 20 397.0 20 149.0 19 724.8 19 142.4 18 883.6 18 689.0 60000 50000 40000 30000 Hidrocarbon reserves million barrels of crude oil equivalent Proved b 23 525.4 21 892.7 20 077.3 18 895.2 17 649.8 16 469.6 15 514.2 14 717.2 14 307.7 13 992.1 13 796.0 13 810.3 Northeastern Marine Region 12 508.8 11 623.1 10 505.3 9 689.7 8 809.1 8 209.4 7 652.2 7 024.6 6 712.3 6 711.8 6 283.4 6 139.4 Southwestern Marine Region 2 042.7 1 919.2 1 844.6 1 680.5 1 743.6 1 513.0 1 627.2 1 630.1 1 893.9 1 891.8 2 076.3 2 115.5 Southern Region 7 086.4 6 600.2 6 099.1 5 756.3 5 103.1 4 883.2 4 388.4 4 341.1 4 049.1 4 036.1 4 000.5 3 980.2 Northern Region 1 887.5 1 750.1 1 628.2 1 768.6 1 994.0 1 864.0 1 846.4 1 721.5 1 652.4 1 352.3 1 435.8 1 575.2 Probable 21 285.2 20 807.3 16 965.0 16 005.1 15 836.1 15 788.5 15 257.4 15 144.4 14 516.9 14 236.6 15 013.1 12 352.7 Northeastern Marine Region 4 975.7 5 034.6 4 866.5 4 427.5 4 324.9 4 446.5 3 690.1 3 290.2 2 977.1 2 479.5 3 084.6 3 203.6 Southwestern Marine Region 1 152.8 1 148.6 1 230.9 1 192.2 1 191.6 997.8 1 116.0 1 404.7 1 536.9 1 529.5 1 700.0 1 976.4 Southern Region 1 467.9 1 259.0 1 042.5 935.1 1 005.2 1 019.6 1 229.7 1 215.3 1 140.3 1 077.4 1 168.2 1 003.4 Northern Region 13 688.8 13 365.0 9 825.0 9 450.2 9 314.4 9 324.7 9 221.6 9 234.1 8 862.6 9 150.2 9 060.2 6 169.3 20000 10000 0 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Possible 11 343.4 10 251.0 12 990.0 13 140.7 13 428.2 14 159.4 14 604.7 14 621.2 14 737.9 14 846.0 14 264.5 17 674.3 Northeastern Marine Region 1 965.5 1 931.4 1 575.2 1 433.4 1 647.6 2 537.7 2 743.7 3 042.9 3 096.5 2 905.9 2 713.3 3 183.3 Southwestern Marine Region 2 007.1 1 769.5 1 499.8 1 549.1 1 553.4 1 532.7 1 903.8 1 725.1 1 758.5 2 589.5 2 607.4 2 962.5 Southern Region 1 029.7 621.9 578.5 492.1 729.6 738.7 628.2 659.8 673.0 710.8 556.2 584.1 Northern Region 6 341.1 5 928.2 9 336.5 9 666.1 9 497.7 9 350.4 9 328.9 9 193.4 9 209.9 8 639.8 8 387.6 10 944.5 25000 Proved reserves million barrels of crude oil equivalent 12 Memorandum 20000 Natural gas reserves (MMMcf) Total 55 515.1 50 648.2 48 796.4 49 008.3 48 649.4 46 715.6 47 367.9 45 858.8 44 622.7 44 712.2 44 969.6 46 308.5 Northeastern Marine Region 4 408.5 4 283.5 3 948.0 3 805.2 3 746.8 3 621.7 3 067.5 2 709.7 2 619.7 2 509.3 2 730.6 2 736.4 Southwestern Marine Region 4 082.5 3 565.2 4 422.0 4 258.6 4 555.1 3 770.1 6 048.5 6 566.2 7 165.8 8 920.0 9 754.5 11 227.4 Southern Region 12 379.7 11 006.7 9 402.8 9 067.1 8 545.6 8 373.3 7 687.3 7 389.9 6 832.1 6 482.6 6 024.1 6 253.4 Northern Region 34 644.4 31 792.7 31 023.6 31 877.5 31 802.0 30 950.5 30 564.5 29 193.0 28 005.0 26 800.2 26 460.5 26 091.3 15000 10000 5000 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Hydrocarbons production (MMbcoe) 1 468.7 1 493.6 1 507.5 1 587.0 1 610.8 1 604.2 1 618.2 1 603.2 1 451.1 1 378.4 1 384.1 1 357.7 0 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 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.01.001/12 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.

2.2 Crude Oil and gas reserves, 2012 a Million barrels of crude oil equivalent Crude oil Gas liquids b Natural gas Total Total 30 612.5 4 320.9 8 903.9 43 837.3 Northeastern Marine Region 11 595.3 404.8 526.1 12 526.3 Southwestern Marine Region 4 026.4 869.3 2 158.7 7 054.4 Southern Region 3 491.8 873.5 1 202.4 5 567.7 Northern Region 11 499.1 2 173.2 5 016.7 18 689.0 Proved c 10 025.2 1 336.8 2 448.3 13 810.3 Northeastern Marine Region 5 528.0 266.8 344.6 6 139.4 Southwestern Marine Region 1 266.9 285.8 562.8 2 115.5 Southern Region 2 417.2 668.2 894.9 3 980.2 Northern Region 813.1 116.0 646.1 1 575.2 By Fluid Gas liquids Natural gas Crude oil 0 10000 20000 30000 40000 Probable 8 548.1 1 248.5 2 556.1 12 352.7 Northeastern Marine Region 2 999.7 92.0 111.8 3 203.6 Southwestern Marine Region 1 202.4 228.2 545.7 1 976.4 Southern Region 666.7 140.1 196.7 1 003.4 Northern Region 3 679.3 788.1 1 701.8 6 169.3 Possible 12 039.3 1 735.6 3 899.5 17 674.3 Northeastern Marine Region 3 067.6 45.9 69.8 3 183.3 Southwestern Marine Region 1 557.1 355.2 1 050.2 2 962.5 Southern Region 407.9 65.3 110.8 584.1 Northern Region 7 006.7 1 269.1 2 668.7 10 944.5 By Type Proved Probable Possible 0 5000 10000 15000 20000 27 Memorandum Natural gas reserves (MMMcf) Proved Probable Possible Total Total 12 733.5 13 293.9 20 281.1 46 308.5 Southwestern Marine Northeastern Marine Region 1 792.0 581.6 362.8 2 736.4 Northeastern Marine Southwestern Marine Region 2 927.1 2 838.4 5 461.9 11 227.4 Southern Region 4 654.1 1 022.8 576.5 6 253.4 Northern Northern Region 3 360.3 8 851.1 13 879.9 26 091.3 0 5000 10000 15000 20000 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.01.001/12 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

2.3 Drilling and production 1000 Completed wells 900 800 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 700 Wells drilled a 449 447 653 733 759 672 615 822 1 490 994 1 000 Wells completed 459 459 593 727 742 656 659 729 1 150 1 303 1 034 Exploratory wells 53 55 88 103 74 69 49 65 75 39 33 Producing wells b 28 27 53 42 39 32 26 27 29 23 16 Success rate % 53 49 60 41 53 46 53 42 39 59 48 Development wells 406 404 505 624 668 587 610 664 1 075 1 264 c 1 001 Producing wells 370 355 455 581 612 541 569 612 1 014 1 200 955 Success rate % c 91 88 90 94 92 92 94 92 94 95 95 Drilling rigs d 50 70 101 132 116 103 116 143 176 130 128 Exploratory wells 10 21 35 40 27 23 20 30 26 19 17 Development wells 40 50 66 92 88 80 96 113 150 111 111 Kilometers drilled 1 098 1 186 1 763 2 106 2 004 1 858 1 798 2 199 3 770 2 532 2 494 Average depth by well e (m) 2 359 2 478 2 904 2 692 2 828 2 771 2 744 2 748 2 494 2 605 2 418 Discovered fields f 15 16 33 24 16 13 14 14 13 5 8 Crude oil - 2 11 8 3 2 4 6 6 2 2 Natural gas 15 14 22 16 13 11 10 8 7 3 6 Producing fields 301 309 340 355 357 364 352 345 394 405 416 Producing wells at end of period g 4 435 4 591 4 942 5 286 5 683 6 080 6 280 6 382 6 890 7 476 8 315 Oil and gas production by well (bd) 923 900 880 833 774 729 699 622 549 508 448 600 500 400 300 200 100 0 9000 8000 7000 6000 5000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Crude oil Natural gas Non productives Producing wells and average depth per well 14 4000 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. 3000 2000 1000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Average depth per well (meters) Producing wells

2.4 Drilling 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Exploratory wells drilled 45 58 96 105 73 58 49 68 71 40 32 Northeastern Marine Region - - 4 9 5 3 2 4 4 1 - Southwestern Marine Region 3 11 23 20 9 5 4 10 10 8 4 Southern Region 5 7 9 9 5 6 7 11 17 12 7 Northern Region 37 40 60 67 54 44 36 43 40 19 21 1600 Drilling Development wells drilled 404 389 557 628 686 614 566 754 1 419 954 968 Northeastern Marine Region 13 7 19 31 31 39 44 41 26 28 28 Southwestern Marine Region - - 3 16 16 9 8 20 14 12 11 Southern Region 19 21 33 65 78 45 69 121 116 117 121 Northern Region 372 361 502 516 561 521 445 572 1 263 797 808 1400 1200 1000 800 Exploratory wells completed 53 55 88 103 74 69 49 65 75 39 33 Northeastern Marine Region - - 3 7 7 3 2 4 4 1 - Southwestern Marine Region 4 7 25 21 6 8 5 9 10 5 8 Southern Region 8 5 11 6 5 5 6 11 19 11 7 Northern Region 41 43 49 69 56 53 36 41 42 22 18 Development wells completed 406 404 505 624 668 587 610 664 1 075 1 264 1 001 Northeastern Marine Region 28 14 22 28 28 38 48 41 28 27 30 Southwestern Marine Region - - 2 7 16 19 6 20 12 11 13 Southern Region 15 21 30 60 84 45 66 118 118 114 115 Northern Region 363 369 451 529 540 485 490 485 917 1 112 843 600 400 200 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Drilled wells Completed wells Producing wells 15 Cayo Arcas

2.5 Crude oil production by region and integral asset a Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 3 127.0 3 177.1 3 370.9 3 382.9 3 333.3 3 255.6 3 075.7 b 2 791.6 2 601.5 2 575.9 2 550.1-1.0 Northeastern Marine Region 1 985.8 2 151.6 2 416.3 2 440.8 2 357.0 2 204.7 2 017.7 1 745.6 1 492.8 1 397.2 1 342.7-3.9 Cantarell 1 731.0 1 902.3 2 122.8 2 136.4 2 035.3 1 800.9 1 490.5 1 039.5 684.8 558.0 500.7-10.3 Ku-Maloob-Zaap 254.8 249.3 293.6 304.4 321.7 403.8 527.2 706.1 808.0 839.2 842.1 0.3 3500 3000 Oil production by region thousand barrels per day Southwestern Marine Region 554.0 452.2 397.6 388.2 396.3 475.1 505.9 500.3 517.6 544.4 560.6 3.0 Abkatún-Pol-Chuc 496.8 406.8 359.0 321.8 299.8 332.2 312.3 308.1 305.4 296.3 276.2-6.8 Litoral Tabasco 57.3 45.4 38.6 66.4 96.5 142.9 193.6 192.2 212.3 248.1 284.4 14.6 2500 2000 Southern Region 508.7 498.4 483.3 472.7 496.6 491.3 465.2 458.7 497.7 531.9 530.6-0.2 Cinco Presidentes 30.7 34.3 37.3 37.7 38.8 39.3 44.6 47.3 56.6 71.7 83.5 16.4 Bellota-Jujo 197.1 201.8 195.4 212.3 224.0 219.1 190.0 174.8 172.2 160.2 143.4-10.5 Macuspana 0.7 1.6 2.5 4.9 5.0 6.6 10.4 15.7 27.1 32.9 32.5-1.1 Muspac 54.0 48.2 42.2 36.1 33.3 33.6 33.6 36.1 42.1 49.5 48.5-2.0 Samaria-Luna 226.3 212.3 205.9 181.6 195.5 192.7 186.7 184.7 199.9 217.5 222.7 2.4 1500 1000 500 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Northeastern Marine Southwestern Marine Northern Southern Northern Region 78.5 74.9 73.6 81.2 83.5 84.5 86.9 87.1 93.3 102.4 116.2 13.5 Poza Rica-Altamira 77.0 73.4 72.1 79.5 81.6 83.0 85.1 55.7 59.1 56.5 60.2 6.4 Aceite Terciario del Golfo - - - - - - - 29.3 29.5 41.0 52.8 28.9 Veracruz 1.6 1.5 1.5 1.7 1.9 1.5 1.8 2.1 4.6 4.9 3.2-33.6 16 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.

2.6 Crude oil production by type and region a Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 3 127.0 3 177.1 3 370.9 3 382.9 3 333.3 3 255.6 3 075.7 b 2 791.6 2 601.5 2 575.9 2 550.1-1.0 Heavy 1 997.0 2 173.7 2 425.4 2 458.0 2 387.0 2 243.8 2 039.4 1 765.6 1 520.0 1 464.0 1 417.1-3.2 Light 658.7 846.6 810.7 789.6 802.3 831.5 837.7 815.5 811.8 792.3 798.3 0.8 Extra-light 471.4 156.9 134.8 135.3 144.1 180.4 198.6 210.4 269.7 319.6 334.7 4.7 Northeastern Marine Region 1 985.8 2 151.6 2 416.3 2 440.8 2 357.0 2 204.7 2 017.7 1 745.6 1 492.8 1 397.2 1 342.7-3.9 Heavy 1 953.7 2 127.1 2 380.9 2 412.0 2 330.6 2 173.5 1 975.5 1 701.7 1 445.9 1 380.3 1 322.7-4.2 Light 32.1 24.4 35.4 28.8 26.4 31.2 42.2 43.9 46.9 16.9 20.1 18.4 Southwestern Marine Region 554.0 452.2 397.6 388.2 396.3 475.1 505.9 500.3 517.6 544.4 560.6 3.0 Heavy - - - 0.3 0.2 0.1 0.2 0.1 0.2 0.2 0.1-29.5 Light 554.0 452.2 397.2 364.2 343.9 392.4 409.7 416.5 418.7 445.8 467.4 4.9 Extra-light - - 0.4 23.8 52.2 82.5 96.0 83.6 98.7 98.4 93.0-5.5 Oil production by type, 2011 thousand barrels per day Southern Region 508.7 498.4 483.3 472.7 496.6 491.3 465.2 458.7 497.7 531.9 530.6-0.2 Heavy - 6.2 6.4 7.1 20.8 14.2 10.7 11.1 13.3 16.8 16.7-0.6 Light 37.3 335.3 342.4 354.1 383.8 379.3 351.9 320.8 313.5 293.9 272.2-7.4 Extra-light 471.4 156.9 134.5 111.5 92.0 97.9 102.6 126.8 171.0 221.1 241.7 9.3 Northern Region 78.5 74.9 73.6 81.2 83.5 84.5 86.9 87.1 93.3 102.4 116.2 13.5 Heavy 43.3 40.3 38.0 38.6 35.4 55.9 53.0 52.8 60.7 66.7 77.6 16.3 Light 35.2 34.6 35.6 42.6 48.1 28.6 33.9 34.3 32.7 35.7 38.7 8.4 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

2.7 Crude oil production in selected fields Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 3 127 3 177 3 371 3 383 3 333 3 256 3 076 b 2 792 2 601 2 576 2 550-1.0 Northeastern Marine Region 1 986 2 152 2 416 2 441 2 357 2 205 2 018 1 746 1 493 1 397 1 343-3.9 Cantarell Akal-Nohoch a 1 673 1 851 2 054 2 079 1 973 1 734 1 416 949 560 384 325-15.2 Sihil - 1 9 6 19 16 12 19 35 60 66 9.9 Chac 22 17 20 17 12 12 13 12 12 14 9-37.2 Ixtoc 11 11 11 11 13 14 12 12 11 12 15 34.2 Kutz 5 9 13 12 12 12 11 11 10 21 19-8.0 Ku 176 185 197 191 203 269 327 364 353 337 311-7.8 Zaap 26 21 41 57 69 71 113 225 277 274 280 2.3 Maloob 45 35 50 53 47 54 73 113 170 218 243 11.7 Otros 29 21 21 15 9 23 40 42 63 79 74-5.9 Southwestern Marine Region 554 452 398 388 396 475 506 500 518 544 561 3.0 Ixtal - - - - 9 47 68 83 108 118 106-10.1 Chuc 118 107 99 93 103 107 87 69 68 74 58-21.2 Bolontiku - - - 7 18 27 54 58 62 54 50-7.1 Sinan - - 0 18 32 53 66 59 60 64 52-18.2 Caan 163 133 114 108 98 88 72 67 50 43 34-21.6 Otros 273 212 184 163 137 153 158 164 171 192 260 35.6 Southern Region 509 498 483 473 497 491 465 459 498 532 531-0.2 Samaria 83 71 73 62 65 64 62 53 49 43 41-4.4 Sen 33 31 21 13 19 22 27 41 46 54 58 5.9 Jujo 56 56 51 44 50 56 51 45 37 23 14-37.1 Pijije 5 9 12 11 13 15 14 18 28 50 62 22.7 Iride 43 43 44 46 50 48 41 34 26 17 15-13.3 Puerto Ceiba 21 38 46 77 77 54 41 33 24 19 16-14.1 Tecominoacán 29 27 23 20 22 29 23 25 24 20 15-23.5 Costero - - - 0-1 2 9 18 22 22 3.1 Tizón 1 1 2 3 5 5 7 8 15 15 12-20.3 Cunduacán 22 21 23 26 27 21 14 13 14 11 7-35.2 Cárdenas 20 16 14 13 15 18 14 13 14 16 12-21.4 Guaricho - - 0 4 4 4 5 8 12 14 13-4.8 Mora 6 6 5 4 4 9 12 10 11 10 10-8.7 Sunuapa 0 1 1 2 3 2 2 2 9 13 9-25.2 Yagual 4 4 4 6 12 11 11 9 9 9 7-25.0 Otros 185 175 163 141 130 132 140 138 161 195 216 10.6 18 Northern Region 79 75 74 81 84 84 87 87 93 102 116 13.5 Bagre 2 1 1 1 1 1 4 9 9 9 7-24.0 Poza Rica 11 10 10 11 10 10 9 7 7 6 6 3.5 Tajín 1 1 3 6 6 5 8 11 7 7 6-6.3 Agua Fría 2 2 2 7 6 7 5 7 7 5 6 13.3 Coapechapa 0 0 0 4 9 7 6 7 7 6 5-4.5 Arenque 8 8 9 8 9 8 8 6 5 5 6 22.3 Otros 54 52 49 44 42 45 47 40 52 66 80 22.4 Burgos Integral Asset a. Historically Cantarell. b. Adjusted and corrected production by water content.

2.8 Natural gas production by region and integral asset a Million cubic feet per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 4 510.7 4 423.5 4 498.4 4 572.9 4 818.0 5 356.1 6 058.5 6 918.6 7 030.7 7 020.0 6 594.1-6.1 Northeastern Marine Region 794.2 831.2 940.5 947.5 927.7 920.2 1 157.2 1 901.3 1 782.5 1 583.7 1 405.6-11.2 Cantarell 639.7 704.3 786.1 789.1 760.7 717.7 944.9 1 628.5 1 455.3 1 251.9 1 074.7-14.2 Ku-Maloob-Zaap 154.5 126.8 154.4 158.4 167.1 202.5 212.2 272.8 327.2 331.8 330.9-0.3 Southwestern Marine Region 735.6 620.6 581.3 602.6 654.8 856.1 992.5 1 022.9 1 111.5 1 171.7 1 208.3 3.1 Abkatún-Pol-Chuc 621.0 520.3 494.3 456.1 431.8 512.5 544.2 569.0 580.2 594.2 559.0-5.9 Litoral de Tabasco 114.6 100.3 87.0 146.5 222.9 343.6 448.4 453.9 531.3 577.6 649.3 12.4 8000 Natural gas production by region million cubic feet per day Southern Region 1 743.2 1 703.8 1 630.0 1 495.1 1 400.3 1 352.1 1 352.8 1 450.6 1 599.6 1 764.7 1 692.3-4.1 Cinco Presidentes 43.9 56.5 58.7 67.8 62.8 56.7 61.4 67.5 69.2 104.9 116.9 11.5 Bellota-Jujo 310.3 292.2 276.6 276.6 281.9 271.4 239.6 250.7 260.8 305.9 288.2-5.8 Macuspana 135.6 132.4 147.5 179.6 167.5 192.9 223.1 260.5 312.4 306.5 292.4-4.6 Muspac 738.4 725.7 686.0 558.1 449.2 368.5 310.9 299.5 278.6 273.5 279.1 2.1 Samaria-Luna 514.9 497.0 461.2 412.9 438.9 462.6 517.6 572.4 678.6 773.9 715.7-7.5 7000 6000 5000 4000 3000 Northern Region 1 237.7 1 267.9 1 346.7 1 527.8 1 835.2 2 227.6 2 556.0 2 543.9 2 537.1 2 499.9 2 287.8-8.5 Burgos 989.7 1 006.9 1 030.7 1 094.5 1 217.3 1 330.3 1 411.8 1 382.7 1 515.2 1 478.4 1 344.1-9.1 Poza Rica-Altamira 112.4 107.1 110.8 119.5 118.8 174.1 222.5 152.5 133.5 117.3 115.2-1.8 Aceite Terciario del Golfo - - - - - - - 52.1 78.7 85.3 111.9 31.1 Veracruz 135.7 153.9 205.2 313.8 499.2 723.3 921.7 956.7 809.6 818.9 716.7-12.5 2000 1000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 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.

2.9 Natural gas production in selected fields Million cubic feet per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 4 511 4 423 4 498 4 573 4 818 5 356 6 058 6 919 7 031 7 020 6 594-6.1 Northeastern Marine Region 794 831 940 947 928 920 1 157 1 901 1 782 1 584 1 406-11.2 Cantarell Akal-Nohoch a 610 676 750 759 720 673 893 1 585 1 407 1 196 1 018-14.9 Ixtoc 13 13 13 13 21 22 27 22 20 12 14 10.9 Sihil - 1 6 2 8 10 11 9 14 24 26 9.6 Chac 9 7 9 7 5 5 5 5 5 6 4-37.1 Kutz 2 4 6 5 5 5 5 5 5 9 9-7.7 Ku 123 98 111 101 103 141 146 159 181 175 172-2.1 Otros 37 32 47 61 65 63 70 116 151 161 164 1.8 Southwestern Marine Region 736 621 581 603 655 856 993 1 023 1 112 1 172 1 208 3.1 May - - - - 24 85 143 206 268 271 310 14.5 Ixtal - - - - 13 86 135 167 212 241 214-10.8 Caan 258 215 206 215 206 185 186 201 173 176 146-16.8 Sinan - - 1 48 80 123 144 112 120 133 119-10.8 Bolontiku - - - 15 40 57 87 79 83 77 77-0.4 Chuc 148 131 119 95 113 115 98 76 76 77 67-12.2 Otros 329 274 255 229 179 205 200 183 180 197 274 39.1 Southern Region 1 743 1 704 1 630 1 495 1 400 1 352 1 353 1 451 1 600 1 765 1 692-4.1 Sen 92 91 64 33 47 56 69 115 137 155 147-4.9 Costero - - - 0-11 23 61 124 160 167 4.9 Iride 76 74 77 70 93 106 106 100 102 94 94 0.5 Narvaez b - - - - 0 30 84 94 95 68 61-10.1 Samaria 114 94 99 102 88 78 96 85 94 85 63-26.0 Tizón 7 5 13 24 28 29 37 48 93 92 68-26.3 Pijije 14 26 35 32 37 42 40 43 79 122 155 26.8 Jujo 81 71 58 45 54 57 56 66 74 96 87-9.3 Giraldas 102 103 96 89 74 63 61 70 67 59 57-2.4 Cunduacán 57 51 55 71 88 97 71 62 65 69 40-42.2 Muspac 212 235 215 145 115 84 62 57 39 24 21-13.8 Oxiacaque 25 25 16 17 13 15 52 72 36 46 35-24.3 Copano 86 80 82 78 65 55 48 41 34 22 17-20.7 Cráter - - - - - - 12 15 27 45 41-8.6 Tecominoacán 37 30 25 31 34 40 28 29 26 31 22-28.2 Cárdenas 35 31 28 27 33 38 28 27 26 34 25-24.9 José Colomo b 60 47 37 36 35 30 29 27 24 19 16-16.3 Sunuapa 1 1 1 1 5 4 4 5 23 38 46 19.9 Otros 744 742 731 694 591 515 447 434 431 506 529 4.4 20 Northern Region 1 238 1 268 1 347 1 528 1 835 2 228 2 556 2 544 2 537 2 500 2 288-8.5 Lizamba b 1 2 4 12 103 152 243 301 264 192 137-28.9 Papán b - - - - - - 57 211 244 220 167-23.9 Culebra b 274 219 201 169 172 168 163 147 113 98 86-12.0 Apertura b - - - - 52 143 170 150 101 97 72-26.4 Forastero b - - - - - - 21 48 99 87 53-38.6 Arcabuz b 57 46 33 40 65 77 94 91 91 94 68-27.2 Velero b 9 13 22 38 50 71 113 86 87 50 45-10.1 Cuitláhuac b 126 109 91 113 116 117 97 84 84 85 87 2.7 Nejo b - - - - - - 18 40 80 130 141 8.4 Fundador b - 2 3 14 50 95 86 77 66 54 40-25.7 Arquimia b - - - - - 113 202 119 55 32 23-27.3 Lankahuasa b - - - - - 51 92 64 49 38 27-29.4 Corindon b 40 59 59 50 43 47 45 49 47 42 33-21.0 Otros 732 819 932 1 091 1 185 1 194 1 155 1 078 1 157 1 281 1 309 2.1 a. Historically Cantarell. b. Non associated gas field. Fundador Well, Burgos Integral Asset

2.10 Crude oil and natural gas production by states Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Crude oil (Mbd) 3 127 3 177 3 371 3 383 3 333 3 256 3 076 2 792 2 601 2 576 2 550-1.0 Territorial sea 2 550 2 614 2 824 2 839 2 765 2 694 2 539 2 266 2 030 1 959 1 919-2.0 Tabasco 453 448 439 434 460 455 428 419 450 470 463-1.3 Veracruz 60 57 57 60 62 59 62 58 63 80 94 17.6 Chiapas 45 42 36 32 30 30 31 34 40 47 46-2.1 Tamaulipas 15 13 11 11 11 10 9 9 9 8 9 8.8 Puebla 2 2 2 7 6 7 5 6 9 11 18 58.9 San Luis Potosí 1 1 0 1 0 0 0 0 1 1 1-4.3 Hidalgo - - - - - - - - Natural gas (MMcfd) 4 511 4 423 4 498 4 573 4 818 5 356 6 058 6 919 7 031 7 020 6 594-6.1 Territorial sea 1 564 1 485 1 554 1 583 1 615 1 863 2 280 3 026 2 976 2 824 2 678-5.2 Tabasco 1 133 1 076 1 020 1 017 1 017 1 041 1 099 1 215 1 377 1 536 1 453-5.4 Veracruz 208 226 279 392 581 804 1 008 1 048 922 938 853-9.1 Tamaulipas 556 578 611 689 794 931 989 937 957 896 803-10.4 Nuevo León 432 428 420 401 423 398 397 391 432 463 454-1.8 Chiapas 597 611 586 459 367 300 245 227 214 216 222 2.6 Coahuila 8 6 6 9 6 6 31 61 134 128 96-25.1 Puebla 10 8 10 13 9 9 7 11 19 19 35 80.4 Campeche 2 5 12 8 6 4 2 2 1 - - - San Luis Potosí - Hidalgo - - - - - - - - 21 Bellota-JuJo Integral Asset

2.11 Crude oil distribution Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Availability 3 130 3 180 3 375 3 385 3 335 3 258 3 078 a 2 793 2 603 2 578 2 552-1.0 Production 3 127 3 177 3 371 3 383 3 333 3 256 3 076 2 792 2 601 2 576 2 550-1.0 Naphtha and condensates 3 3 4 2 2 3 2 2 2 2 2-16.2 Oil distribution, 2011 thousand barrels per day Distribution 3 106 3 163 3 358 3 363 3 320 3 234 3 058 2 754 2 594 2 549 2 515-1.3 To refineries 1 140 1 172 1 246 1 258 1 275 1 242 1 231 1 216 1 264 1 191 1 172-1.6 To abroad processing 62 130 112 97 81 80 - - - - - - To petrochemical plants 146 145 150 134 131 122 126 131 97 - - - To exports terminals 1 757 1 716 1 848 1 874 1 833 1 789 1 701 1 407 1 232 1 358 1 343-1.1 Linefill, stock changes, losses, injections, transfers and statistical differences 25 17 17 22 15 25 20 39 10 29 37 26.3 To exports terminals 53.4 % To refineries 46.6 % a. Adjusted and corrected production by water content. 22 Akal B

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

2.12 Natural gas distribution Million cubic feet per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Availability 5 478 5 472 5 619 5 742 5 984 6 571 7 211 8 055 8 198 8 222 7 754-5.7 Production 4 511 4 423 4 498 4 573 4 818 5 356 6 058 6 919 7 031 7 020 6 594-6.1 Sour gas 3 294 3 164 3 133 2 994 2 937 3 075 3 415 4 236 4 315 4 312 4 000-7.2 Sweet gas 1 216 1 260 1 365 1 579 1 881 2 281 2 644 2 682 2 716 2 708 2 434-10.1 From Pemex-Gas and Basic Petrochemicals 967 1 048 1 121 1 169 1 166 1 215 1 153 1 136 1 167 1 202 1 160-3.5 Distribution 5 478 5 472 5 620 5 742 5 984 6 571 7 211 8 055 8 198 8 222 7 754-5.7 Self-consumption a 439 443 441 521 618 665 785 848 1 128 1 562 1 615 3.4 To atmosphere 425 318 296 180 198 286 560 1 347 1 044 611 360-41.0 Carbon dioxide (CO 2 ) 78 52 43 27 16 15 13 13 12 11 10-5.3 Natural gas 347 266 254 153 182 271 547 1 334 1 031 600 350-41.7 Net linefill 6 10 7 2-19 3-8 - 9 8 7-53 - 883.7 Carbon dioxide (CO 2 ) injected to deposits 9 26 25 31 23 9 8 5 6 7 4-34.9 Condensation in pipelines and plants 271 241 261 233 240 267 244 225 226 241 245 1.8 To Pemex-Refining 6 22 5 1 1 2 2 2 2 0 0-38.7 To PGPB 4 321 4 411 4 585 4 775 4 923 5 340 5 621 5 638 5 784 5 795 5 583-3.7 To pipelines 710 697 763 815 998 1 152 1 334 1 382 1 326 1 312 1 047-20.2 To processing plants b 3 611 3 714 3 823 3 960 3 926 4 188 4 287 4 256 4 458 4 483 4 536 1.2 Sweetening plants 3 176 3 208 3 325 3 296 3 118 3 162 3 150 3 190 3 388 3 427 3 454 0.8 Cryogenic plants 435 506 498 664 807 1 025 1 138 1 066 1 070 1 056 1 082 2.5 8000 7000 6000 5000 4000 3000 2000 1000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 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

Burgos Gas Processing Center 2011 Processing Natural gas (MMcfd) Condensates (Mbd) 4 527 57 Production Dry gas (MMcfd) * Natural gas liquids (Mbd) LPG (Mbd) 3 692 389 185 Number of sweetening plants 20 Capacity of: Sour natural gas (MMcfd) Sour condensates (Mbd) 4 503 144 Number of cryogenic plants 20 Capacity (MMcfd) 5 712 Natural gas Products LPG distribution terminals Pipeline (km) Natural gas Products 18 10 307 3 659 51 *Plant production. 03 3.1 Processing capacity 3.2 Natural gas processing and production 3.3 3.4 Dry gas balance Gas processing by center 3.5 Domestic sales of dry gas, LPG and petrochemicals Gas

3.1 Processing capacity Million cubic feet per day 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Sweetening plants Sour condensates (Mbd) 144 144 144 144 144 144 144 144 144 144 144 Sour natural gas 3 923 4 173 4 503 4 503 4 503 4 503 4 503 4 503 4 503 4 503 4 503 Liquids recovery plants 5 034 5 034 5 146 5 546 5 342 5 742 5 742 5 942 5 792 5 792 5 712 Cryogenics 4 559 4 559 4 592 4 992 4 992 5 392 5 392 5 592 5 792 5 792 5 712 Absorption 475 475 554 554 350 350 350 350 - - - Liquids fractionating a (MBD) 554 563 569 574 574 587 587 587 569 569 569 26 a. Includes liquids recovery plants. Burgos Gas Processing Center

3.2 Natural gas processing and production Million cubic feet per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Processing Wet gas 3 677 3 770 3 853 3 963 3 879 4 153 4 283 4 240 4 436 4 472 4 527 1.2 Sour gas 3 227 3 260 3 360 3 349 3 153 3 203 3 162 3 188 3 381 3 422 3 445 0.7 Sweet gas a 450 510 492 614 726 950 1 120 1 052 1 055 1 050 1 082 3.1 Gas to liquified extraction 3 693 3 746 3 829 3 925 3 810 4 108 4 264 4 224 4 399 4 458 4 483 0.6 Wet gas 3 526 3 600 3 689 3 803 3 712 3 987 4 134 4 085 4 252 4 304 4 347 1.0 Reprocessing streams b 166 146 141 123 98 121 130 139 146 154 136-11.9 Production (Mbd) Dry gas c (MMpcd) 2 804 2 916 3 029 3 144 3 147 3 445 3 546 3 461 3 572 3 618 3 692 2.0 Natural gas liquids d 443 418 428 451 436 436 405 376 378 383 389 1.5 LPG 206 205 212 225 215 215 199 182 181 184 185 0.7 Ethane 147 127 125 133 129 127 119 117 121 119 121 0.9 Gasolines 88 84 86 90 88 92 85 74 76 79 82 3.9 Others e 2 2 4 3 3 3 2 2 1 1 1 10.1 Sulfur (Mt) 684 703 757 759 692 711 659 660 712 670 636-5.1 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

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

3.3 Dry gas balance Million cubic feet per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Supply 3 921 4 309 4 655 4 836 4 724 5 136 5 353 5 367 5 393 5 540 5 604 1.2 Production 2 804 2 916 3 029 3 144 3 147 3 445 3 546 3 461 3 572 3 618 3 692 2.0 From processing plants 101 91 95 108 94 87 87 76 74 74 76 2.4 From producing fields of PEP 710 697 763 815 998 1 152 1 334 1 382 1 325 1 312 1 045-20.3 Imports 292 592 757 766 480 451 386 447 422 536 791 47.6 Others 14 13 10 4 5 1 - - - - - - Demand 3 851 4 299 4 620 4 813 4 688 5 116 5 330 5 369 5 367 5 509 5 573 1.2 Self-consumption 1 829 1 870 1 993 2 056 2 033 2 130 2 128 2 176 2 181 2 235 2 187-2.1 Exports 25 4 - - 24 33 139 107 67 19 1-93.2 Domestic sales a 1 993 2 425 2 622 2 756 2 634 2 952 3 064 3 086 3 119 3 255 3 385 4.0 Industrial-distributors sector 984 1 132 1 138 1 094 1 073 1 156 1 185 1 127 1 000 1 763 1 884 6.9 Power sector 1 010 1 293 1 484 1 535 1 422 1 663 1 740 1 671 1 801 1 146 1 189 3.7 Power autogeneration sector - - - 127 139 133 139 140 136 144 139-3.8 Dealers sector 148 183 201 173-14.0 Linefil 3 5-2 1-1 1 0 0-356.8 29 Difference 71 10 35 23 38 18 22-2 26 31 30-1.7 a. Measured volumes at 1 Kg/cm 2 and 20 C. 3500 3000 Domestic sales and imports of dry natural gas million cubic feet per day 5000 4500 Dry natural gas processing and production million cubic feet per day 4000 2500 3500 2000 3000 2500 1500 1000 500 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Industrial - distributors sector Power sector Power autogeneration sector Wholesalers Imports 2000 1500 1000 500 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Natural gas processing Dry gas production Burgos Gas Processing Center

3.4 Gas processing by center Million cubic feet per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Gas processing 3 677 3 770 3 853 3 963 3 879 4 153 4 283 4 240 4 436 4 472 4 527 1 Sour wet gas 3 227 3 260 3 360 3 349 3 153 3 203 3 162 3 188 3 381 3 422 3 445 1 Cactus 1 550 1 581 1 533 1 431 1 373 1 334 1 404 1 597 1 712 1 674 1 696 1 Ciudad Pemex 787 785 922 941 826 918 884 831 847 888 854-4 Matapionche 96 94 81 81 73 74 67 54 51 49 45-9 Nuevo Pemex 648 676 696 760 741 744 668 593 658 678 677 0 Arenque - - 28 34 32 32 31 26 23 26 30 13 Poza Rica 145 124 100 100 107 100 109 86 91 106 144 36 Sweet wet gas 450 510 492 614 726 950 1 120 1 052 1 055 1 050 1 082 3 Ciudad Pemex 84 102 65 70 63 45 67 60 52 53 41-22 La Venta 61 62 60 65 46 45 53 62 57 79 102 28 Reynosa a 286 336 356 233 223 197 183 117 11 - - - Burgos - - - 241 385 646 804 808 932 913 931 2 Nuevo Pemex 19 10 12 6 9 17 14 5 3 5 8 54 a. As of August 31, 2009, is out of operation. 30 Ciudad Pemex Gas Processing Center

3.5 Domestic sales of dry gas, LPG and petrochemicals million pesos a Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) 3500 3000 Dry natural gas production and domestic sales million cubic feet per day Total b 59 207.3 57 281.2 88 935.8 113 013.4 129 182.4 129 849.2 135 137.9 165 723.4 109 428.7 123 801.4 127 282.1 2.8 2500 2000 Dry gas 28 914.1 30 313.0 51 207.9 69 229.9 79 064.8 75 299.2 78 644.1 105 436.3 58 102.1 67 141.3 64 468.8-4.0 1500 LPG 29 327.2 26 137.4 36 855.6 42 662.9 48 530.8 52 706.1 54 456.5 55 972.2 49 461.3 53 385.9 57 981.0 8.6 Petrochemicals 966.0 830.8 872.3 1 120.6 1 586.9 1 843.9 2 037.4 4 314.9 1 865.3 3 274.2 4 832.3 47.6 Hexane 142.6 134.0 217.6 286.0 405.6 378.3 344.8 484.6 367.5 278.5 408.2 46.5 Sulfur 72.8 110.5 194.2 189.0 189.2 238.1 236.1 1 817.7 32.4 662.8 1 354.7 104.4 Carbon black 120.1 135.7 274.4 371.0 640.5 819.8 1 038.5 1 423.6 1 149.9 1 808.9 2 368.2 30.9 Pentanes 2.7 47.4 23.1 46.3 38.8 72.6 63.1 115.2 73.6 144.4 232.0 60.6 Heptane 24.7 20.3 30.1 41.6 64.0 69.8 68.3 85.8 55.1 60.6 105.7 74.4 Butane 39.2 36.5 54.7 69.7 88.2 100.3 141.1 168.5 119.2 188.7 240.7 27.6 Propane 23.3 18.8 27.9 40.8 44.1 49.1 60.5 78.7 49.3 74.2 93.5 26.1 Isobutane 6.3 2.5 0.4 - - - - - - - - - Absorption solvent 14.4 26.4 41.6 62.2 111.9 109.8 81.1 132.2 10.0 - - - Others c 520.0 298.7 8.2 14.0 4.4 6.0 3.9 8.7 8.4 56.0 29.2-47.8 1000 500 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Production Domestic sales 31 thousand tons Dry gas (MMcfd) 1 993.3 2 425.1 2 622.4 2 755.9 2 633.9 2 952.5 3 064.4 3 086.3 3 118.8 3 254.9 3 385.1 4.0 LPG (Mbd) 324.7 331.9 326.9 327.6 313.4 305.4 300.5 291.3 281.0 287.9 284.8-1.1 Petrochemicals 869.8 861.4 793.7 931.2 1 025.9 1 047.7 1 066.0 1 128.1 1 003.2 1 078.1 1 164.9 8.1 Hexane 41.3 39.7 52.5 52.1 49.7 38.0 39.0 36.4 33.6 23.0 29.3 27.3 Sulfur 394.5 448.9 470.0 539.4 551.7 580.4 579.3 667.8 593.3 582.1 647.8 11.3 Carbon black 154.4 149.8 208.1 265.8 336.0 350.9 383.8 354.1 330.7 419.1 429.6 2.5 Pentanes 1.4 20.5 6.9 9.4 7.1 11.1 8.4 11.2 10.7 15.0 19.1 27.3 Heptane 7.0 5.8 7.1 7.4 7.6 6.9 7.3 6.2 4.9 4.9 7.1 46.8 Butane 11.4 12.8 13.3 13.2 14.8 14.6 19.0 16.6 17.2 19.7 20.6 4.4 Propane 6.6 6.8 6.7 7.9 7.7 7.5 8.3 8.1 7.7 8.6 8.7 1.1 Isobutane 1.7 0.8 0.1 - - - - - - - - - Absorption solvent 22.1 25.8 27.1 33.5 50.5 37.3 20.2 26.6 4.2 - - - Others c 229.3 150.5 1.9 2.6 0.8 1.0 0.6 1.0 0.9 5.7 2.7-52.9 a. Cash flow. b. Not includes V.A.T. c. Includes miscellaneous products. Cactus Gas Processing Center

Ing. Héctor R. Lara Sosa, refinery 2011 Thousand barrels per day Processing Production Domestic sales of refined products 1 167 1 190 1 498 Facilities Atmospheric distillation capacity Number of refineries Storage and distribution terminals Service stations 1 690 6 77 9 637 Pipeline (km) Crude oil Products 5 213 8 958 65 04 4.1 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, 2011 4.7 4.8 Average enduser prices of by state Service stations selected refined products Refining

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

4.1 Refining capacity Thousand barrels per day 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Atmospheric distillation 1 559 1 540 1 540 1 540 1 540 1 540 1 540 1 540 1 540 1 540 1 690 Vacuum distillation 774 768 768 768 768 754 754 754 754 754 832 Cracking 375 396 396 375 375 381 381 381 381 381 423 Visbreaking 141 141 141 141 141 91 91 91 91 91 91 Reforming 269 301 301 301 301 279 279 279 279 279 279 Hydrodesulfurization a 848 987 987 987 987 926 926 926 926 1 010 1 067 Alkylation and Isomerization a 139 144 144 144 144 152 152 128 128 128 142 Coking - - 100 100 100 100 100 100 100 100 156 34 a. Excludes La Cangrejera since 2008. Gral. Lázaro Cárdenas refinery

4.2 Refining production Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Refined products 1 261.6 1 262.4 1 327.5 1 349.6 1 325.3 1 327.8 1 312.4 1 306.9 1 342.7 1 229.1 1 190.2-3.2 LPG 27.8 31.3 33.8 28.0 30.6 25.4 26.6 25.9 27.1 25.5 21.4-16.0 Gasolines 390.2 398.2 445.2 466.7 455.1 456.2 456.4 450.7 471.5 424.2 400.3-5.6 Nova/Base a 9.8 16.4 10.5 3.9 4.8 7.5 4.5 6.5 3.0 3.0 0.7-78.2 Pemex Magna b 362.0 359.4 396.5 418.5 412.0 413.7 425.7 418.7 364.0 341.2 324.2-5.0 Ultra Low sulfur Magna c - - - - - - - - 81.8 67.3 61.7-8.3 Pemex Premium 17.3 21.8 37.6 43.8 38.2 35.0 26.1 25.4 22.7 12.5 13.7 9.9 Others 1.2 0.7 0.6 0.4 0.1 0.1 0.1 0.1 0.1 0.1 0.0-77.1 Jet fuel 56.7 56.7 59.6 62.1 63.3 64.8 66.3 64.0 57.1 51.9 56.3 8.5 Other kerosenes 0.3 - - - - - - - - - - - Diesel 281.6 266.9 307.8 324.7 318.2 328.1 334.0 343.5 337.0 289.5 273.8-5.4 Low sulfur content 1.1 0.7 0.6 - - - - - - - - - Pemex Diesel 266.6 246.7 290.8 319.6 312.3 318.3 326.2 336.1 291.4 221.0 193.6-12.4 Ultra Low sulfur Diesel c - - - - - - - - 44.5 67.7 80.1 18.2 Others 13.9 19.5 16.4 5.1 5.9 9.8 7.8 7.4 1.0 0.8 0.1-92.9 Industrial fuel oil... - - - - - - - - - - - Fuel oil 430.4 436.1 381.1 356.5 337.9 323.3 301.5 288.7 316.2 322.3 307.5-4.6 Asphalts 28.7 28.8 25.6 27.2 29.3 32.3 31.9 34.3 31.9 24.9 26.1 4.9 Lubricants 5.2 4.9 5.5 5.4 5.2 5.1 5.2 5.1 4.2 4.3 3.7-12.7 Paraffines 1.2 1.0 0.9 1.0 1.1 1.0 1.1 1.0 0.8 0.8 0.7-9.8 Refinery gas 39.0 37.4 51.3 49.9 51.9 56.7 55.2 54.9 54.9 54.2 62.6 15.6 Other refined products d 0.6 1.1 16.7 28.2 32.8 34.8 34.2 38.8 42.0 31.7 37.9 19.4 35 Petrochemicals (Mt) 712.8 690.6 894.8 1 042.6 1 048.2 1 070.8 1 121.2 1 070.5 1 178.4 1 120.2 1 117.0-0.3 a. Refers to unfinished gasoline. b. Includes gasoline transfer from La Cangrejera to the Minatitlan Refinery. c. It start production as of January 2009. d. Includes aeroflex 1-2, coke, vacuum gas oil to export, furfural extract and flasher bottoms. 1600 1400 Refinery production thousand barrels per day 1200 1000 800 600 Gasolines Diesel Fuel oil Jet fuel LPG Others 400 200 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Ing. Antonio M. Amor refinery

4.3 Production by refinery Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Processing 1 251.9 1 245.4 1 285.9 1 303.4 1 284.4 1 284.2 1 269.8 1 261.0 1 294.9 1 184.1 1 166.7-1.5 Production a 1 261.6 1 262.4 1 327.5 1 349.6 1 325.3 1 327.8 1 312.4 1 306.9 1 342.7 1 229.1 1 190.2-3.2 Cadereyta Processing 200.4 196.0 209.0 212.8 194.6 207.2 210.2 208.3 217.2 176.9 170.6-3.6 Production 204.6 206.7 227.5 220.1 199.9 214.6 218.5 220.1 224.5 180.5 171.1-5.2 Refinery Runs, 2011 Thousand barrels per day Madero Processing 105.9 108.0 141.2 145.3 141.9 149.3 141.4 152.1 151.8 126.4 117.5-7.0 Production 92.1 89.9 142.2 153.8 158.6 172.0 160.6 163.4 160.7 134.4 117.7-12.4 Minatitlán Processing 177.0 169.6 176.6 167.0 162.6 168.6 170.1 161.6 167.1 158.7 151.9-4.3 Production 181.9 175.8 178.2 174.7 176.4 173.1 173.8 171.7 179.7 176.8 167.6-5.2 Salamanca Processing 185.7 185.4 185.0 198.6 197.0 196.4 187.6 192.5 192.1 185.9 170.7-8.2 Production 185.1 186.3 187.4 201.1 195.0 195.8 183.8 193.1 189.1 183.7 167.0-9.1 Tula 23.7 % Cadereyta 14.6 % Madero 10.1 % Minatitlán 13.0 % Salamanca 14.6 % Salina Cruz 23.9 % 36 Salina Cruz Processing 292.8 306.3 306.2 287.9 292.7 290.0 271.5 279.4 277.2 270.0 279.4 3.5 Production 303.7 322.7 320.1 303.1 301.2 299.5 284.0 290.0 289.6 281.1 285.5 1.6 Tula Processing 290.3 280.1 267.8 291.9 295.6 272.7 288.9 267.2 289.5 266.2 276.6 3.9 Production 294.2 281.0 272.1 296.4 294.2 272.9 291.8 268.6 299.2 272.7 281.4 3.2 a. Excludes products under abroad processing agreements. Ing. Antonio M. Amor refinery

4.4 Value of domestic sales Million pesos Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total a 142 508.5 135 623.2 186 882.5 255 244.1 326 924.3 383 307.0 421 622.9 490 003.8 466 117.7 535 058.7 625 678.7 16.9 Refined products 141 821.1 135 075.8 185 964.9 253 556.4 324 852.4 380 858.5 419 114.8 486 715.3 463 258.8 530 969.0 621 254.5 17.0 Gasolines 71 895.6 70 004.0 99 443.1 145 192.7 184 883.9 221 972.2 247 625.4 266 286.8 258 778.0 295 430.7 328 870.2 11.3 Pemex Magna 60 734.8 57 327.1 80 864.0 117 390.9 150 793.1 181 286.7 209 006.5 231 071.4 233 307.2 270 121.9 300 936.8 11.4 Pemex Premium 10 874.5 12 428.9 18 364.1 27 591.2 33 857.6 40 410.7 38 331.9 34 909.6 25 180.3 24 987.2 27 520.1 10.1 Aviation fuels 112.3 125.3 130.1 119.7 172.0 180.4 212.9 236.9 240.9 247.1 353.4 43.0 Others b 174.1 122.8 84.8 90.9 61.2 94.4 74.1 69.0 49.6 74.4 59.9-19.5 Kerosenes 5 806.6 5 326.9 7 344.0 11 081.5 16 388.7 19 089.5 23 552.5 32 038.3 18 439.9 23 114.3 31 776.1 37.5 Jet fuel 5 681.6 5 193.9 7 229.0 10 951.1 16 241.3 18 897.1 23 369.3 31 936.4 18 320.7 22 935.3 31 560.2 37.6 Others c 125.0 133.0 115.0 130.5 147.4 192.3 183.2 101.9 119.2 179.0 215.9 20.6 Diesel 33 793.0 30 244.6 44 706.9 61 473.2 78 736.5 88 373.6 96 920.1 111 424.7 121 521.5 144 009.6 166 241.2 15.4 Pemex Diesel 27 589.3 25 424.8 36 538.9 51 675.9 67 014.4 76 036.1 84 752.0 96 434.7 106 129.0 125 556.4 142 559.8 13.5 Others 6 203.6 4 819.9 8 168.0 9 797.3 11 722.1 12 337.5 12 168.2 14 990.0 15 392.4 18 453.2 23 681.4 28.3 Industrial fuel oil 9.3 - - - - - - - - - - - Fuel oil 27 653.0 26 709.1 30 896.3 31 528.8 39 520.7 43 298.9 42 395.7 61 670.2 51 907.6 56 766.7 80 265.5 41.4 Asphalts 1 513.7 1 812.0 2 304.2 2 857.8 3 538.3 5 759.5 6 107.4 11 492.9 10 277.1 8 814.1 10 539.1 19.6 Lubricants 1 008.2 855.2 1 126.7 1 245.0 1 536.3 2 059.9 2 167.9 3 318.1 2 000.5 2 429.8 3 153.8 29.8 Paraffines 141.2 122.9 119.7 144.7 201.3 225.2 247.7 371.6 235.3 297.5 304.2 2.2 Others d 0.5 1.0 24.0 32.6 46.7 79.8 98.0 112.7 99.0 106.4 104.5-1.8 37 Petrochemicals 687.5 547.4 917.6 1 687.7 2 071.9 2 448.6 2 508.1 3 288.4 2 859.0 4 089.7 4 424.3 8.2 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

4.5 Volume of domestic sales Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Refined products 1 386.7 1 326.2 1 357.1 1 390.0 1 457.1 1 456.4 1 514.8 1 534.6 1 489.7 1 473.6 1 501.2 1.9 Gasolines 551.8 566.2 601.2 636.7 672.1 718.9 760.9 792.6 792.4 802.2 799.7-0.3 Pemex Magna 476.5 476.5 500.2 525.5 559.6 601.8 658.9 706.2 727.7 743.7 738.6-0.7 Pemex Premium 73.9 88.5 100.1 110.4 111.7 116.3 101.3 85.7 64.1 57.8 60.5 4.6 Aviation fuels 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 6.6 Others a 1.0 0.8 0.4 0.4 0.3 0.2 0.2 0.1 0.1 0.2 0.1-24.6 Kerosenes 56.1 54.1 54.9 58.5 59.5 62.2 68.8 65.4 55.4 56.4 56.8 0.6 Jet fuel 55.3 53.3 54.2 57.8 58.7 61.2 67.9 65.0 55.0 55.8 56.1 0.6 Others b 0.8 0.8 0.7 0.7 0.8 1.0 0.9 0.4 0.4 0.6 0.6 8.1 Diesel 275.8 270.7 294.7 302.7 320.1 344.9 358.4 382.0 359.0 371.1 383.6 3.4 Pemex Diesel 226.4 228.0 240.7 255.4 273.4 297.9 314.5 332.0 314.5 325.1 330.6 1.7 Others 49.4 42.7 54.0 47.3 46.7 46.9 43.9 50.0 44.5 46.0 52.9 15.0 Industrial fuel oil... - - - - - - - - - - - Fuel oil 474.9 406.2 354.6 332.5 340.6 263.7 256.9 219.6 209.0 184.9 200.6 8.5 Asphalts 20.9 21.6 22.2 24.5 26.9 28.8 29.9 32.6 30.7 23.6 24.6 4.4 Lubricants 5.5 5.2 5.7 5.7 5.7 5.5 5.7 5.6 4.5 4.7 4.2-10.2 Paraffines 1.2 1.1 1.0 1.1 1.1 1.0 1.1 1.0 0.8 0.8 0.8-9.2 Others c 0.4 1.3 22.8 28.4 31.2 31.4 33.1 35.9 38.0 30.0 31.0 3.5 2000 1500 1000 500 Production and domestic sales thousand barrels per day Production Domestic sales Petrochemicals (Mt) 301.6 235.3 272.3 286.0 289.0 333.8 290.9 278.9 365.4 325.0 292.0-10.2 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 38 a. Includes initial filling motor gasoline. b. Includes domestic gas oil. c. Coke and impregnant.. Gral. Lázaro Cárdenas refinery

4.6 Domestic sales of refined products by region a, 2011 Thousand barrels per day Total Gasolines Kerosenes b Diesel Fuel oil Others Total 1 501 800 57 384 201 61 Central 390 231 23 74 57 5 Central - West 327 187 7 94 22 17 Northeastern 284 143 6 93 7 35 Southern - Southeastern 323 138 14 65 103 3 Northwestern 177 102 6 58 11 - a. Economic Regionalization established by the Presidency of the United Mexican States. b. Includes domestic gas oil. 39 Gral. Lázaro Cárdenas refinery

4.7 Average end-user prices of selected refined products a Pesos per cubic feet 14000 12000 Average end user prices of selected refined products Mexican pesos per cubic meter 10000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Pemex Magna 5 454.05 5 746.38 5,955.37 6 137.68 6 332.16 6 610.58 6 913.18 7 266.78 7 721.67 8 301.92 9 257.26 Pemex Premium 6 112.49 6 441.48 6,675.42 7 171.26 7 477.26 7 847.26 8 512.60 9 096.31 9 570.00 9 870.96 10 348.93 Jet fuel 2 222.14 2 099.85 2,832.18 3 974.04 5 889.25 6 335.15 7 169.54 9 993.32 6 911.76 8 476.47 11 484.98 Pemex Diesel 4 523.10 4 762.99 4,938.68 5 090.19 5 243.62 5 447.34 5 848.88 6 354.37 7 840.93 8 661.92 9 617.26 Fuel oil 1 096.40 1 502.19 1,950.06 2 025.81 2 730.07 3 529.69 3 790.65 5 404.63 5 077.68 6 301.95 8 311.77 Asphalt 1 488.99 1 677.00 2,114.63 2 375.84 2 712.63 4 079.70 4 203.24 7 048.34 6 905.80 7 727.87 8 817.23 8000 6000 4000 2000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 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

4.8 Service stations by state 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Total 5 139 5 564 6 166 6 732 7 172 7 554 7 940 8 351 8 803 9 232 9 637 Aguascalientes 51 53 60 70 71 73 75 79 92 98 107 Baja California 238 260 295 331 352 363 389 411 426 460 477 Baja California Sur 48 54 61 65 76 83 92 99 104 112 127 Campeche 31 34 39 40 42 43 43 43 46 51 54 Coahuila 198 221 249 260 274 292 310 331 349 359 368 Colima 35 45 50 56 60 64 69 74 78 83 89 Chiapas 106 115 128 140 152 159 165 171 187 198 212 Chihuahua 261 277 330 363 390 411 434 449 460 472 483 Distrito Federal 314 309 317 322 328 327 326 330 334 346 353 Durango 118 126 143 154 157 164 171 172 172 178 177 Guanajuato 261 281 309 334 355 368 380 391 407 429 453 Guerrero 107 114 129 140 145 156 163 165 175 177 179 Hidalgo 121 139 155 170 180 192 208 216 225 231 240 Jalisco 365 377 412 436 462 498 551 586 625 666 702 México 371 425 469 518 561 603 637 672 713 748 782 Michoacán 236 250 275 301 316 321 330 341 358 371 376 Morelos 56 61 76 84 91 96 99 110 114 119 125 Nayarit 60 65 70 75 76 82 86 92 101 105 110 Nuevo León 340 372 419 461 494 511 517 538 565 596 616 Oaxaca 100 104 112 122 137 143 150 160 177 181 188 Puebla 215 246 272 289 294 306 318 326 343 357 386 Querétaro 87 92 95 106 114 121 126 135 142 149 159 Quintana Roo 46 55 60 71 79 86 87 98 116 122 143 San Luis Potosí 118 129 142 153 164 172 179 192 212 216 221 Sinaloa 171 196 230 265 281 300 319 341 360 376 394 Sonora 260 275 295 320 349 376 391 407 424 443 455 Tabasco 72 80 90 99 100 104 107 116 124 132 139 Tamaulipas 238 265 289 319 337 365 400 434 458 488 497 Tlaxcala 50 53 56 60 65 70 73 78 84 88 92 Veracruz 268 285 317 359 399 421 447 474 499 529 566 Yucatán 89 95 102 116 127 134 142 153 162 173 182 Zacatecas 108 111 120 133 144 150 156 167 171 179 185 Service station 41

Morelos Petrochemical Center 2011 Thousand tons Production Domestic sales 8 155 2 824 Facilities Number of plants Number of centers Installed capacity 39 8 12 409 Pipelines (km) * *Includes piping rack. 742 85 05 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 5.6 Average enduser prices of selected petrochemicals Petrochemicals

5.1 Installed capacity by complex Thousand tons 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Total 11 189 11 562 12 497 12 546 12 571 12 571 12 572 12 798 13 061 13 275 12 409 Cosoleacaque 4 736 4 998 4 975 4 975 4 975 4 975 4 977 4 977 4 976 4 976 4 306 La Cangrejera 2 297 2 427 3 205 3 255 3 280 3 280 3 279 3 280 3 280 3 300 3 300 Morelos 2 134 2 107 2 263 2 263 2 263 2 263 2 262 2 262 2 535 2 730 2 730 Pajaritos 1 066 1 021 1 021 1 021 1 021 1 021 1 021 1 246 1 246 1 246 1 050 Escolín 337 337 337 337 337 337 337 337 337 337 337 Camargo 297 333 333 333 333 333 333 333 333 333 333 San Martín Texmelucan 260 268 288 288 288 288 287 287 287 287 287 Tula 62 71 76 76 76 76 76 76 66 66 66 Reynosa - - - - - - - - - - - 43 Morelos Petrochemical Center

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

5.2 Petrochemical production Thousand tons Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 5 995 5 889 6 085 6 223 6 219 6 572 7 497 7 841 7 587 8 943 8 155-8.8 Methane derivatives 1 752 1 663 1 383 1 668 1 242 1 404 1 859 2 202 1 962 2 282 2 306 1.1 Ammonia 707 680 534 681 514 592 760 896 790 899 867-3.5 Carbonic anhydride 856 814 658 821 647 727 1 087 1 262 1 172 1 367 1 289-5.7 Methanol 189 169 190 165 81 85 12 44-16 151 845.4 Ethane derivatives 2 408 2 309 2 218 2 073 2 440 2 748 2 607 2 604 2 695 2 831 2 750-2.8 Acetaldehyde 58 51 57 5 - - - - - - - - Vinyl chloride 150 158 113 63 159 209 235 157 155 187 168-10.1 Dichloroethane 245 253 186 110 260 353 391 267 259 306 275-10.3 Ethylene 1 063 994 982 1 007 1 085 1 128 1 001 1 062 1 160 1 126 1 124-0.1 Ethylene glycol 132 119 139 145 150 178 163 193 152 198 168-15.2 Ethylene oxide 307 302 312 299 321 361 301 344 280 372 355-4.8 HD Polyethylene 178 147 158 181 169 167 157 170 195 181 174-3.9 LD Polyethylene 276 284 271 262 296 352 358 412 495 460 486 5.8 Aromatics and derivatives 642 670 795 1 222 1 187 1 089 1 085 1 058 957 1 042 923-11.4 Heavy aromatics 1 10 5 10 8 9 14 15 9 8 7-6.6 Aromine 100 40 31 84 140 106 102 120 104 37 41 40-1.2 Benzene 94 107 114 136 160 135 118 101 79 118 118 0.2 Styrene 124 128 101 162 142 139 134 120 91 65 128 96.5 Ethylbenzene 140 140 114 179 155 156 149 136 105 77 144 86.9 Fluxoil 5 3 4 4 5 4 4 3 4 2 3 17.9 Orthoxylene - - 10 28 35 27 29 19 - - - - Paraxylene - - 55 201 220 185 187 112 - - - - Toluene 152 183 235 214 253 203 175 153 139 188 159-15.6 Xylenes 86 68 73 31 35 28 30 46 60 100 93-7.4 High octane hydrocarbon - - - 116 69 100 124 249 433 444 232-47.8 Propylene and derivatives 127 115 125 116 104 24 47 17 31 84 62-26.7 Acetonitrile... 3 5 3 3-1 - 1 2 2-6.5 Hydrocyanic acid 3 6 7 7 6-3 - 1 6 4-29.5 Acrylonitrile 32 61 77 72 63-24 - 12 55 39-29.5 Polypropylene 2 - - - - - - - - - - - Propylene 89 45 36 34 32 24 20 17 17 21 17-20.2 Others 1 059 1 115 1 540 1 103 1 216 1 283 1 452 1 480 1 551 2 094 1 662-20.6 Hydrochloric acid 87 92 66 38 93 126 141 93 92 109 98-10.1 Muriatic acid 31 24 14 11 16 44 50 49 37 34 16-53.8 Raw butane 36 35 36 41 46 44 35 33 37 35 35 0.0 Petrochemical specialities a 11 11 10 10 13 14 11 11 11 10 9-10.0 Heptane 13 8 18 11 15 14 13 23 20 20 19-4.7 Hexane 62 57 70 66 66 53 56 54 46 51 45-12.2 Hydrogen - - 167 162 184 167 161 148 110 159 128-19.6 Nitrogen 96 109 106 112 118 117 106 135 149 167 165-1.2 Oxygen 380 376 399 418 433 447 410 455 445 460 447-2.7 Pentanes - - - - - - 112 89 139 316 189-40.3 Petrochemical polymer... - - - - - - - - - - - Heavy reformate 337 357 413 - - - - - - - - - CPDI b - - - - - - - - - 30 18-40.6 Others 5 47 242 236 232 257 357 389 466 704 494-29.7 Refined products 7 18 24 42 30 24 447 480 391 610 451-26.0 Gasnaphtha 6 18 24 42 30 24-38 29 27 29 4.4 Heavy naphtha - - - - - - 194 147 86 99 60-39.5 Octane basis gasoline - - - - - - - - 89 356 264-25.9 Amorphous gasoline - - - - - - 253 296 186 127 98-22.4 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.

5.3 Production by petrochemical complex Thousand tons Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 5 994 5 889 6 085 6 223 6 219 6 572 7 497 7 841 7 587 8 943 8 155-8.8 La Cangrejera 1 936 2 088 2 549 2 747 2 817 2 698 3 239 3 207 3 192 3 934 3 364-14.5 Cosoleacaque 1 468 1 433 1 192 1 503 1 161 1 319 1 748 2 059 1 871 2 122 2 028-4.4 Morelos 1 447 1 319 1 551 1 470 1 533 1 553 1 482 1 824 1 833 2 111 1 919-9.1 Pajaritos 699 675 503 222 529 865 966 697 680 751 685-8.8 San Martín Texmelucan 200 180 200 175 94 99 23 55 11 26 159 523.7 Camargo a 95 61 - - - - - - - - - - Tula 36 56 57 63 58-27 - - - - - Escolín 112 78 32 43 28 38 10 - - - - - a. Camargo unit are shut down since 2003. 46 Morelos Petrochemical Center

5.4 Value of petrochemical domestic sales Million pesos Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total a 7 947.2 7 074.0 10 634.8 16 412.9 19 727.4 20 366.2 21 424.2 25 823.6 19 329.3 24 738.4 28 853.7 16.6 Methane derivatives 1 437.7 1 094.8 1 637.5 2 168.2 2 543.7 2 685.9 3 124.9 5 438.8 3 895.0 4 454.9 5 956.0 33.7 Ammonia 1 262.6 947.1 1 431.7 1 895.7 2 178.6 2 174.9 2 638.9 4 882.7 3 576.5 3 995.6 5 332.1 33.5 Carbonic anhydride 18.8 18.0 32.6 54.1 55.2 42.9 60.3 60.5 53.5 69.3 67.6-2.5 Methanol 156.3 129.8 173.1 218.4 309.9 468.0 425.7 495.6 265.1 390.0 556.3 42.7 Ethane derivatives 4 774.8 4 054.2 6 194.0 8 327.1 10 266.8 11 240.6 11 742.2 14 137.8 11 983.9 15 814.8 16 539.6 4.6 Acetaldehyde 75.5 66.6 86.3 13.6 - - - - - - - - Vinyl chloride 513.5 519.6 616.0 591.9 1 388.3 1 623.1 1 638.1 1 264.6 1 103.7 1 554.5 1 533.7-1.3 Dichloroethane 0.2... 0.2 0.1 0.2 - - - - - - - Ethylene 121.6 131.4 205.3 316.4 381.9 430.6 330.2 492.1 95.0 43.5 54.7 25.6 Ethylene glycol 381.8 379.3 632.7 1 130.1 888.8 1 136.3 1 621.1 2 037.0 1 216.6 2 042.9 2 251.8 10.2 Ethylene oxide 976.4 882.1 1 397.4 1 767.5 2 151.0 2 212.2 1 810.1 2 352.2 1 563.7 2 206.3 2 224.9 0.8 HD Polyethylene 884.3 557.3 1 114.1 1 537.9 1 859.4 2 068.2 1 938.9 2 362.9 2 089.1 2 636.2 2 657.0 0.8 LD Polyethylene 1 821.3 1 517.9 2 141.9 2 969.5 3 597.2 3 770.1 4 403.8 5 629.0 5 915.6 7 331.3 7 817.6 6.6 31 Aromatics and derivatives 1 237.8 1 312.0 1 910.8 4 654.9 5 563.8 5 831.5 5 898.5 5 335.1 2 704.0 2 718.8 4 387.0 61.4 Heavy aromatics - - - - - - - - - - - - Aromine 100 24.5 16.2 30.9 38.1 51.8 83.7 89.8 128.8 131.5 149.3 169.8 13.8 Benzene 29.1 24.1 2.1 2.4 62.6 19.4 13.7 22.0 29.0 30.3 34.1 12.5 Styrene 625.3 717.5 853.0 1 671.3 1 712.8 1 618.2 1 738.9 1 807.0 1 146.7 919.4 2 109.2 129.4 Fluxoil 3.9 4.3 4.4 5.9 6.5 3.9 4.5 - - - - - Orthoxylene - - - 162.8 259.4 259.3 305.7 231.9 - - - - Paraxylene - - 306.1 1 698.9 2 198.0 2 344.4 2 294.6 1 611.4 - - - - Benzene - Toluene 141.2 16.0 4.6 - - - - - - - - - Toluene 240.7 367.9 494.0 735.6 829.7 990.6 963.5 1 015.7 962.2 1 057.3 1 251.0 18.3 Xylenes 173.1 166.0 215.5 340.0 443.1 512.0 487.8 518.3 434.5 562.6 823.0 46.3 Morelos Petrochemical Center Propylene and derivatives 457.7 526.4 761.1 1 116.9 1 087.3 339.8 346.8 386.6 400.5 1 384.4 1 467.1 6.0 Hydrocyanic acid 5.6 2.6 - - - - - - 0.6 7.2 4.4-39.2 Acrylonitrile 196.8 368.6 619.1 879.0 815.3 20.6 21.5 4.2 195.4 1 081.3 952.4-11.9 Polypropylene 40.7 31.7 3.8 - - - - - - - - - Propylene 214.5 123.5 138.2 237.9 271.9 319.2 325.3 382.4 204.5 295.9 510.3 72.5 Others b 39.4 86.7 131.5 145.8 265.9 268.4 311.8 525.3 345.9 365.6 503.9 37.8 a. Not includes VAT. b. Includes butadiene, cat heavy naphtha, carbon tetrachoride, gasnaphtha, impregnating agent, polyethylene wax, nitrogen, oxygen and others products.

5.5 Volume of petrochemical domestic sales Thousand tons Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 2 323 2 199 2 115 2 351 2 480 2 488 2 684 2 784 2 695 2 811 2 824 0.5 Methane derivatives 958 856 732 813 838 839 1 023 1 197 1 237 1 234 1 256 1.8 Ammonia 752 644 541 584 587 600 714 826 895 825 833 0.9 Carbonic anhydride 126 147 132 163 161 131 223 288 270 325 309-4.9 Methanol 80 65 59 67 90 108 86 83 73 84 114 36.2 Ethane derivatives 916 902 916 881 952 1 066 1 076 1 092 1 108 1 204 1 172-2.7 Acetaldehyde 22 23 21 3 - - - - - - - - Vinyl chloride 148 150 125 82 177 214 231 161 163 185 170-8.2 Dichloroethane............... - - - - - - - Ethylene 23 35 37 45 43 39 32 36 10 3 4 12.0 Ethylene glycol 103 112 111 128 103 141 169 191 152 197 167-15.0 Ethylene oxide 214 219 220 200 222 243 196 212 181 235 241 2.7 HD Polyethylene 139 103 149 162 150 153 146 153 168 175 162-7.2 LD Polyethylene 266 259 254 260 258 276 302 339 433 409 427 4.5 Aromatics and derivatives 309 304 330 521 558 489 476 389 248 208 265 27.7 Heavy aromatics - - - - - - - - - - - - Aromine 100 7 5 6 5 6 8 8 10 12 12 10-16.0 Benzene 9 7...... 8 2 1 2 3 2 2-1.8 Styrene 125 126 114 141 136 122 124 117 99 57 121 111.0 Fluxoil 4 4 3 4 4 1 1 - - - - - Orthoxylene - - - 21 31 26 28 19 - - - - Paraxylene - - 51 201 221 183 184 113 - - - - Benzene - Toluene 40 5 1 - - - - - - - - - Toluene 75 109 107 101 100 99 86 85 93 89 81-8.8 Xylenes 50 49 47 47 53 49 44 43 41 47 51 8.5 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 107 96 100 106 83 30 30 25 37 78 70-10.8 Hydrocyanic acid 3 2 - - - - - - 1 6 4-29.4 Acrylonitrile 37 57 72 75 57 1 1 0 11 54 39-27.5 Polypropylene 7 5... - - - - - - Propylene 61 32 27 31 26 29 29 25 25 18 26 43.9 Others a 34 41 37 30 48 64 79 81 65 87 61-30.0 a. Includes butadiene, cat heavy naphtha, carbon tetrachoride, gas naphtha, impregnating agent, polyethylene wax, nitrogen, oxygen and others products.

5.6 Average end-user prices of selected petrochemicals a 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 36000 32000 Average end user prices of selected petrochemicals Mexican pesos per ton Acrylonitrile b 6 580.07 7 469.60 10 449.30 14 157.74 17 877.27 18 363.68 19 481.76 22 474.70 21 185.77 25 241.51 30 696.07 28000 Ammonia 1 417.15 1 543.23 2 836.99 3 368.54 3 821.70 3 607.90 3 680.05 6 179.14 3 933.81 4 758.52 6 485.31 24000 Vinyl chloride 4 328.81 3 965.52 5 850.73 7 605.36 9 391.10 8 430.83 7 684.10 8 607.76 7 144.72 9 344.57 9 917.39 Styrene 5 980.09 7 330.88 9 552.96 14 656.19 15 459.45 16 088.82 17 230.05 18 917.49 14 829.32 18 772.65 21 472.80 Monoethylene glycol, FG 4 005.25 3 828.99 6 566.23 9 829.28 10 575.21 10 100.22 12 350.00 11 893.49 9 791.05 12 655.59 16 456.05 Hexane 3 541.13 3 485.41 4 246.66 5 633.58 8 397.32 10 211.45 9 246.02 13 658.05 11 555.82 12 538.50 14 798.59 HD Polyethylene 6 704.21 6 068.08 8 669.71 10 896.08 14 438.62 15 935.34 15 740.79 17 999.30 14 419.14 17 496.50 19 241.61 LD Polyethylene 7 757.04 6 730.91 9 808.60 13 342.24 16 385.42 15 914.55 16 926.10 19 488.87 16 031.77 22 201.13 22 298.14 Linear LD Polyethylene c - - - - - 15 001.01 15 492.15 17 815.41 15 080.85 18 922.96 20 087.66 Toluene 3 374.94 3 468.18 4 697.58 7 453.91 8 957.47 10 253.91 11 729.38 12 467.26 10 810.36 12 412.08 16 174.26 20000 16000 12000 8000 4000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 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

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 6 644 5 609 2 583 2 464 2 103 1 890 1 683 1 605 1 562 1 430 1 388 1 361 101 Source: OPEC (Annual Statistical Bulletin 2010/2011) and Petróleos Mexicanos. 06 6.1 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

6.1 Hydrocarbon exports and imports Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) 60000 Balance of Trade million of U.S. dollars million of U. S. dollars 50000 Net exports 8 836.1 11 374.7 14 444.1 17 856.4 22 339.1 27 380.3 25 643.5 26 069.2 16 404.9 19 577.1 24 995.8 27.7 40000 Exports 12 944.7 14 691.1 18 437.9 23 421.6 31 702.6 38 671.9 42 581.6 49 543.3 30 513.6 41 025.8 55 796.3 36.0 Crude oil 11 927.7 13 392.2 16 676.3 21 257.9 28 329.4 34 706.8 37 937.5 43 341.5 25 605.4 35 985.4 49 322.3 37.1 Olmeca 2 775.7 2 222.9 2 307.7 3 187.9 4 246.2 5 443.4 4 469.1 4 712.2 3 444.8 6 149.1 8 132.6 32.3 Istmo 705.9 392.5 255.4 380.9 1 569.6 1 427.9 1 049.9 683.1 327.4 2 148.9 3 849.9 79.2 Maya 8 446.1 10 776.8 14 113.2 17 689.2 22 513.5 27 835.4 32 418.5 37 946.3 21 833.2 27 687.3 37 339.8 34.9 Condensates - - 1.6 17.8 40.4 23.7 - - - - 23.9 - Dry gas 47.8 4.0 - - 78.9 71.8 350.5 316.3 103.5 31.9 1.6-95.1 Refined products 856.3 1 182.0 1 612.3 1 929.2 2 951.0 3 570.8 4 051.5 5 536.8 4 657.4 4 764.0 6 188.4 29.9 Petrochemicals 112.9 112.9 147.6 216.7 302.9 298.7 242.1 348.6 147.3 244.6 260.2 6.4 30000 20000 10000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Exports Imports Cumulative exports Imports 4 108.5 3 316.5 3 993.8 5 565.2 9 363.5 11 291.6 16 938.2 23 474.1 14 108.7 21 448.8 30 800.6 43.6 Dry gas 423.8 775.4 1 526.2 1 715.1 1 397.9 1 134.5 995.7 1 423.6 632.8 939.2 1 272.2 35.5 Refined products 3 656.2 2 495.2 2 423.3 3 791.6 7 858.7 10 028.8 15 797.5 21 892.8 13 307.8 20 335.4 29 403.6 44.6 Petrochemicals 28.6 45.9 44.3 58.4 106.8 128.2 145.0 157.7 168.1 174.2 124.7-28.4 thousand barrels per day Exports Crude oil 1 755.7 1 705.1 1 843.9 1 870.3 1 817.1 1 792.7 1 686.2 1 403.4 1 222.1 1 360.5 1 337.9-1.7 Olmeca 317.4 244.8 215.6 221.4 215.8 230.6 172.7 129.6 143.5 211.7 202.9-4.2 Istmo 86.8 45.8 24.9 27.4 81.0 68.3 41.1 23.0 14.2 74.9 99.3 32.6 Maya 1 351.4 1 414.5 1 603.4 1 621.6 1 520.3 1 493.8 1 472.3 1 250.8 1 064.5 1 074.0 1 035.7-3.6 Condensates - - 0.2 1.5 2.2 1.1 - - - - 0.7 - Dry gas (MMcfd) 24.9 4.4 - - 23.9 32.7 138.7 107.4 66.5 19.3 1.3-93.2 Refined products 103.7 155.9 177.0 151.5 184.9 186.9 179.7 192.0 243.4 192.8 184.0-4.5 Petrochemicals (Mt) 780.4 831.8 812.9 914.3 867.2 817.5 692.6 586.6 741.3 676.5 458.0-32.3 51 Imports Dry gas (MMcfd) 292.2 592.5 756.9 765.6 480.4 450.9 385.6 447.1 422.0 535.8 790.8 47.6 Refined products a 335.3 243.6 199.9 234.2 333.7 368.9 494.6 552.5 519.2 627.3 678.2 8.1 Petrochemicals (Mt) 128.1 197.4 94.7 104.7 238.6 253.8 270.0 249.8 388.2 268.2 101.3-62.2 FPSO Yuum K Ak Naa B, (The Lord of the sea), Campeche a. Excludes the volume of imported products under processing agreements.

6.2 Value of crude oil exports by destination Million of U. S. dollars Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 11 927.7 13 392.2 16 676.3 21 257.9 28 329.4 34 706.8 37 937.5 43 341.5 25 605.4 35 985.4 49 322.3 37.1 America 10 383.8 11 626.4 14 621.7 19 002.5 24 856.4 30 958.8 33 236.1 38 186.8 22 435.9 31 100.5 41 750.9 34.2 United States 8 977.3 10 584.2 13 106.0 17 032.3 22 224.6 28 025.9 30 126.2 35 455.7 21 712.9 30 034.9 40 293.8 34.2 Others 1 406.4 1 042.2 1 515.7 1 970.3 2 631.9 2 933.0 3 109.8 2 731.1 723.0 1 065.6 1 457.1 36.7 Europe 1 234.6 1 400.4 1 494.7 1 886.5 2 969.2 3 174.0 3 858.4 4 318.6 2 400.5 3 408.6 4 852.8 42.4 Far East 266.9 365.5 547.9 368.9 486.7 573.9 843.0 836.1 769.1 1 476.3 2 718.6 84.1 Africa 42.5-12.0-17.1 - - - - - - - Olmeca 2 775.7 2 222.9 2 307.7 3 187.9 4 246.2 5 443.4 4 469.1 4 712.2 3 444.8 6 149.1 8 132.6 32.3 America 2 775.7 2 222.9 2 307.7 3 187.9 4 246.2 5 443.4 4 469.1 4 712.2 3 444.8 6 149.1 8 132.6 32.3 United States 2 522.2 2 040.5 2 025.9 2 928.1 3 850.1 5 033.0 4 140.7 4 213.4 3 265.2 5 792.1 7 688.9 32.7 Others 253.5 182.4 281.8 259.8 396.1 410.4 328.4 498.8 179.7 357.0 443.7 24.3 Istmo 705.9 392.5 255.4 380.9 1 569.6 1 427.9 1 049.9 683.1 327.4 2 148.9 3 849.9 79.2 America 548.5 271.7 165.7 274.0 1 033.6 1 311.2 868.0 492.5 197.8 1 566.9 3 249.9 107.4 United States 360.9 184.3 83.0 73.3 579.3 665.3 197.5 150.5 58.2 1 349.0 2 877.1 113.3 Others 187.6 87.3 82.7 200.8 454.3 645.9 670.6 342.0 139.7 217.9 372.9 71.1 Europe 85.0 69.5 23.3 106.8 515.4 116.7 181.8 190.6 129.6 513.4 343.9-33.0 Far East 72.4 51.3 66.4-20.6 - - - - 68.6 256.1 273.1 Africa - - - - - - - - - - - - 52 Maya 8 446.1 10 776.8 14 113.2 17 689.2 22 513.5 27 835.4 32 418.5 37 946.3 21 833.2 27 687.3 37 339.8 34.9 America 7 059.6 9 131.8 12 148.3 15 540.6 19 576.6 24 204.2 27 899.0 32 982.2 18 793.2 23 384.5 30 368.4 29.9 United States 6 094.3 8 359.3 10 997.2 14 030.9 17 795.2 22 327.6 25 788.1 31 091.9 18 389.5 22 893.7 29 727.8 29.9 Others 965.3 772.5 1 151.2 1 509.7 1 781.4 1 876.7 2 110.9 1 890.3 403.7 490.7 640.5 30.5 Europe 1 149.6 1 330.9 1 471.4 1 779.6 2 453.7 3 057.3 3 676.5 4 128.1 2 270.9 2 895.2 4 508.9 55.7 Far East 194.4 314.2 481.5 368.9 466.1 573.9 843.0 836.1 769.1 1 407.7 2 462.5 74.9 Africa 42.5-12.0-17.1 - - - - - - - Dos Bocas Maritime Terminal

6.3 Volume of crude oil exports by destination Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 1 755.7 1 705.1 1 843.9 1 870.3 1 817.1 1 792.7 1 686.2 1 403.4 1 222.1 1 360.5 1 337.9-1.7 America 1 527.9 1 477.5 1 603.8 1 655.6 1 589.1 1 589.9 1 487.6 1 223.1 1 083.5 1 178.7 1 133.3-3.8 United States 1 321.7 1 338.6 1 437.5 1 482.0 1 424.7 1 441.9 1 351.5 1 142.9 1 049.0 1 139.5 1 095.0-3.9 Others 206.1 138.9 166.3 173.6 164.4 148.0 136.1 80.2 34.5 39.2 38.3-2.3 Europe 183.9 181.0 175.7 178.4 193.9 170.8 163.3 145.3 104.1 127.6 130.8 2.6 Far East 37.5 46.7 63.2 36.3 32.8 32.0 35.2 34.9 34.5 54.3 73.7 35.9 Africa 6.4-1.2-1.4 - - - - - - - Olmeca 317.4 244.8 215.6 221.4 215.8 230.6 172.7 129.6 143.5 211.7 202.9-4.2 America 317.4 244.8 215.6 221.4 215.8 230.6 172.7 129.6 143.5 211.7 202.9-4.2 United States 288.5 224.7 189.5 202.4 195.9 213.6 160.1 115.2 136.2 199.6 192.2-3.7 Others 28.9 20.2 26.1 19.0 19.9 17.0 12.6 14.3 7.3 12.1 10.7-12.0 Istmo 86.8 45.8 24.9 27.4 81.0 68.3 41.1 23.0 14.2 74.9 99.3 32.6 America 67.9 31.8 16.0 19.0 52.5 62.7 35.0 15.5 8.7 54.5 84.3 54.9 United States 45.2 21.5 8.0 5.5 29.4 31.6 7.6 5.6 2.1 46.6 74.6 59.9 Others 22.6 10.4 7.9 13.5 23.0 31.1 27.4 9.9 6.5 7.8 9.8 24.9 Europe 10.2 8.0 2.4 8.3 27.2 5.6 6.1 7.5 5.5 18.1 8.5-52.8 Far East 8.7 5.9 6.6-1.2 - - - - 2.3 6.4 176.1 Africa - - - - - - - - - - - - 2000 1500 1000 Crude oil exports thousand barrels per day 53 Maya 1 351.4 1 414.5 1 603.4 1 621.6 1 520.3 1 493.8 1 472.3 1 250.8 1 064.5 1 074.0 1 035.7-3.6 America 1 142.6 1 200.8 1 372.2 1 415.2 1 320.8 1 296.6 1 279.9 1 078.1 931.3 912.5 846.2-7.3 United States 988.0 1 092.4 1 239.9 1 274.0 1 199.3 1 196.7 1 183.8 1 022.1 910.6 893.3 828.3-7.3 Others 154.7 108.4 132.3 141.1 121.5 99.9 96.1 56.0 20.7 19.2 17.9-7.2 Europe 173.6 172.9 173.4 170.1 166.6 165.2 157.2 137.8 98.7 109.5 122.3 11.7 Far East 28.7 40.7 56.6 36.3 31.5 32.0 35.2 34.9 34.5 51.9 67.3 29.6 Africa 6.4-1.2-1.4 - - - - - - - 500 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Maya Olmeca Istmo

6.4 Crude oil exports to selected countries a Thousand barrels per day Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Total 1 755.7 1 705.1 1 843.9 1 870.3 1 817.1 1 792.7 1 686.2 1 403.4 1 222.1 1 360.5 1 337.9-1.7 United States 1 321.7 1 338.6 1 437.5 1 482.0 1 424.7 1 441.9 1 351.5 1 142.9 1 049.0 1 139.5 1 095.0-3.9 Spain 147.0 140.8 143.4 149.5 160.8 144.3 125.1 122.9 93.1 115.6 110.8-4.1 India 20.8 36.7 52.5 36.3 32.8 32.0 35.2 34.9 34.5 27.8 37.1 33.4 China - - - - - - - - - 26.4 36.6 38.5 Canada 27.6 19.9 29.3 28.1 38.2 36.3 30.6 26.0 22.4 23.9 20.5-14.5 San Jose Agreement 44.6 27.2 32.1 29.0 30.5 36.7 35.5 20.4 9.4 15.3 17.8 16.9 Portugal 15.2 15.4 15.0 12.5 17.7 12.5 10.0 2.5-5.2 5.4 3.7 Netherlands - 2.7 - - - 1.9 14.4 8.8 10.6 3.7 7.4 100.9 Netherlands Antilles 133.9 91.8 104.9 116.5 95.8 75.0 70.0 33.8 2.7 - - - Israel 3.6 4.8 4.8 3.6 4.4 3.6 3.6 4.8 0.5 - - - England 14.6 15.7 12.5 12.2 10.9 7.8 10.1 5.0 - - - - Others 26.7 11.4 11.9 0.7 1.4 0.6-1.4-3.1 7.2 130.2 109 a. Excludes temporary crude oil exports for abroad processing. Ing. Antonio M. Amor refinery

6.5 Crude oil prices U. S. dollars per barrel Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Average price 18.61 21.52 24.78 31.05 42.71 53.04 61.64 84.38 57.40 72.46 101.00 39.4 Olmeca 23.96 24.87 29.32 39.34 53.91 64.67 70.89 99.37 65.79 79.58 109.83 38.0 Istmo 22.27 23.48 28.08 38.04 53.11 57.29 69.92 81.09 63.38 78.63 106.22 35.1 Maya 17.19 20.89 24.13 29.82 40.61 51.10 60.38 82.92 56.22 70.65 98.80 39.9 2011 U. S. dollars per barrel Average price 23.64 26.91 30.29 36.98 49.20 59.18 66.87 88.16 60.18 74.75 101.00 35.1 Olmeca 30.43 31.10 35.84 46.84 62.09 72.16 76.91 103.82 68.98 82.09 109.83 33.8 Istmo 28.29 29.36 34.33 45.29 61.17 63.92 75.85 84.72 66.45 81.12 106.22 31.0 Maya 21.83 26.12 29.49 35.51 46.78 57.02 65.51 86.63 58.95 72.88 98.80 35.6 120 Crude oil prices U.S. dollar per barrel 100 80 55 60 40 20 Mexican oil basket 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 ENE FEB MAR ABR MAY JUN JUL AGO SEP OCT NOV DIC WTI Madero Maritime Terminal

6.6 Crude oil prices by area of destination U. S. dollars per barrel 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Total 18.61 21.52 24.78 31.05 42.71 53.04 61.64 84.38 57.40 72.46 101.00 America 18.62 21.56 24.98 31.36 42.85 53.35 61.21 85.30 56.73 72.29 100.93 United States 18.61 21.66 24.98 31.40 42.74 53.25 61.07 84.76 56.71 72.21 100.81 Others 18.69 20.55 24.97 31.01 43.85 54.29 62.58 93.01 57.41 74.48 104.22 Europe 18.40 21.20 23.30 28.89 41.96 50.92 64.74 81.18 63.15 73.20 101.62 Far East 19.51 21.46 23.74 27.76 40.67 49.09 65.54 65.49 61.02 74.55 101.03 Africa 18.06-27.19-34.13 - - - - - - Olmeca 23.96 24.87 29.32 39.34 53.91 64.67 70.89 99.37 65.79 79.58 109.83 America 23.96 24.87 29.32 39.34 53.91 64.67 70.89 99.37 65.79 79.58 109.83 United States 23.95 24.88 29.29 39.52 53.84 64.57 70.87 99.90 65.68 79.52 109.61 Others 24.08 24.76 29.54 37.39 54.58 65.98 71.17 95.15 67.80 80.57 113.82 Istmo 22.27 23.48 28.08 38.04 53.11 57.29 69.92 81.09 63.38 78.63 106.22 America 22.15 23.38 28.41 39.35 53.95 57.28 67.89 87.00 62.45 78.83 105.59 United States 21.86 23.51 28.24 36.13 53.91 57.60 71.17 73.36 74.49 79.26 105.73 Others 22.72 23.11 28.58 40.67 54.01 56.96 66.98 94.76 58.51 76.31 104.55 Europe 22.72 23.72 27.08 35.04 51.82 57.38 81.58 68.97 64.86 77.76 110.27 Far East 22.72 23.68 27.65-45.73 - - - - 80.72 109.10 Africa - - - - - - - - - - - Maya 17.19 20.89 24.13 29.82 40.61 51.10 60.38 82.92 56.22 70.65 98.80 America 17.00 20.85 24.27 30.02 40.66 51.21 59.78 83.62 55.31 70.22 98.36 United States 16.98 20.99 24.32 30.11 40.71 51.18 59.75 83.15 55.36 70.23 98.36 Others 17.10 19.53 23.85 29.23 40.17 51.47 60.20 92.16 53.43 69.89 98.30 Europe 18.14 21.08 23.25 28.59 40.34 50.70 64.08 81.85 63.15 72.44 101.02 Far East 18.54 21.14 23.29 27.76 40.48 49.09 65.54 65.49 61.02 74.27 100.26 Africa 18.06-27.19-34.13 - - - - - - 56 Gral. Lázaro Cárdenas refinery

6.7 Refined products and dry gas exports and imports million of U. S. dollars Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Net exports -3 175.9-2 084.5-2 335.6-3 559.8-6 186.4-7 497.0-12 391.1-17 463.3-9 179.7-16 478.7-24 461.9 48.4 Exports 904.1 1 186.1 1 614.0 1 947.0 3 070.3 3 666.4 4 402.1 5 853.1 4 760.8 4 795.9 6 213.9 29.6 LPG 32.6 3.4 3.6 3.5 24.3 36.8 20.7 3.0 13.9 2.2 35.4 1 478.9 Gasolines 626.3 570.6 754.3 1 127.8 1 472.7 1 782.3 1 953.4 2 173.8 1 344.8 1 848.7 2 619.3 41.7 Jet fuel 26.8 63.5 90.2 112.4 172.3 189.6 103.9 258.8 106.4 42.2 79.3 88.0 Diesel 80.0 66.7 35.7 102.7 17.1 46.3 196.0 220.0 104.7 13.5 - - 100.0 Vacuum gas oil 4.7 - - - - - - - - - - - Fuel oil 16.5 160.8 141.9 17.5 5.8 490.7 547.9 1 122.1 2 267.9 2 834.3 3 281.6 15.8 Asphalts 28.7 30.3 7.5 2.0 2.4 - - - - - - - Others 40.7 286.9 580.7 580.9 1 296.8 1 048.9 1 229.8 1 759.3 819.6 23.1 196.7 752.4 Dry gas 47.8 4.0 - - 78.9 71.8 350.5 316.3 103.5 31.9 1.6-95.1 Imports a 4 080.0 3 270.6 3 949.5 5 506.8 9 256.7 11 163.4 16 793.1 23 316.4 13 940.6 21 274.6 30 675.8 44.2 LPG 600.5 471.5 574.3 648.1 707.1 813.8 1 094.9 1 117.9 771.2 1 011.5 987.6-2.4 Propane 265.0 328.0 303.7 448.9 449.5 472.6 645.5 910.9 460.1 614.7 1 207.8 96.5 Gasolines b 1 930.8 1 191.8 1 033.0 2 135.7 5 205.4 6 623.9 10 916.9 14 610.7 9 319.9 13 917.3 19 540.0 40.4 Diesel 87.6 204.8 60.7 60.3 600.6 1 262.6 1 960.8 3 378.9 1 381.6 3 861.7 6 503.5 68.4 Fuel oil 715.7 155.7 198.9 226.0 414.8 285.1 385.2 1 158.3 943.6 299.7 970.2 223.7 Others 56.6 143.3 252.8 272.7 481.2 570.8 794.2 716.3 431.4 630.5 194.5-69.2 Dry gas 423.8 775.4 1 526.2 1 715.1 1 397.9 1 134.5 995.7 1 423.6 632.8 939.2 1 272.2 35.5 57 thousand barrels per day Net exports - 271.0-174.5-134.2-194.1-214.0-242.5-351.3-410.7-328.2-510.7-609.9 19.4 Exports 107.4 156.5 177.2 152.9 190.6 192.8 200.2 207.8 253.3 195.6 184.9-5.5 LPG 3.1 0.4 0.3 0.2 1.8 2.1 1.0 0.1 1.1 0.1 1.5 1 510.9 Gasolines 73.0 70.7 70.7 76.2 79.0 86.6 79.7 68.8 71.4 67.7 75.2 11.0 Jet fuel 2.5 6.3 7.6 6.8 6.9 6.3 3.4 5.7 4.2 1.3 1.8 34.1 Diesel 8.9 8.0 2.9 7.7 0.8 2.5 8.8 6.4 4.8 0.4 - - 100.0 Vacuum gas oil 0.8 - - - - - - - - - - - Fuel oil 3.9 24.9 21.4 2.6 0.8 35.6 33.6 59.0 120.7 122.3 100.9-17.5 Asphalts 5.7 4.4 1.2 0.3 0.3 - - - - - - - Others 5.7 41.2 73.1 59.0 97.3 54.8 53.2 51.9 41.2 1.0 5.5 465.6 Rosarito Sector pipelines Dry gas c 3.7 0.6 - - 3.5 4.8 20.4 15.8 9.8 2.8 0.2-93.2 Imports a 378.4 331.0 311.4 347.1 404.5 435.4 551.5 618.5 581.4 706.3 794.8 12.5 LPG 74.6 59.9 55.6 50.3 45.6 48.2 53.6 49.3 51.6 50.1 39.9-20.4 Propane 25.2 41.7 29.8 34.3 27.3 27.4 29.3 39.5 28.5 28.9 42.5 47.1 Gasolines b 139.3 95.6 69.1 112.5 190.4 214.2 315.3 345.6 335.0 409.8 430.3 5.0 Diesel 6.7 17.2 3.9 2.9 21.4 40.5 52.7 68.0 47.7 108.0 135.7 25.6 Fuel oil 85.2 16.4 18.6 17.7 26.4 14.3 17.0 32.9 39.2 11.0 25.0 127.5 Others 4.3 12.9 22.9 16.4 22.6 24.2 26.7 17.3 17.3 19.5 4.8-75.4 Dry gas c 43.1 87.3 111.6 112.9 70.8 66.5 56.8 65.9 62.2 79.0 116.6 47.6 a. Excludes imported products under abroad processing agreements. b. Includes MTBE. c. Fuel oil equivalent.

6.8 Exports and imports of petrochemical products million of U. S. dollars Change 2011/2010 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (%) Net exports 84.3 67.0 103.4 158.2 196.1 170.5 97.1 190.9-20.8 70.4 135.4 92.5 Exports 112.9 112.9 147.6 216.7 302.9 298.7 242.1 348.6 147.3 244.6 260.2 6.4 Acetaldehyde 15.2 10.5 12.5 3.0 - - - - - - - - Acrylonitrile 1.3 2.6 1.8-6.8-34.5 1.6 - - - - Ammonia 2.4 12.9 0.0 10.3-9.6 15.1 58.1-35.2 20.0-43.1 Sulfur 6.4 12.9 25.3 28.0 20.5 19.4 18.5 129.4 1.6 42.3 57.2 35.3 Benzene - - 10.1 7.5 28.0 21.2 7.7 - - 51.2 4.3-91.6 Polyethylenic wax 0.2 0.1 0.3 0.3 0.1 0.2 0.3 - - 0.0 - - Styrene - 2.0 3.3 16.8 11.3 18.5 15.3 - - 3.3 17.6 434.7 Ethylene 46.9 28.0 39.8 107.1 119.2 74.1 24.1 13.2 53.1 18.0 9.4-47.9 Ethylene glycol 7.6 3.9 18.4 8.7 43.1 23.3 3.7 0.7 0.6 0.1 0.6 280.6 Polyethylenes 22.7 22.4 17.5 18.6 44.8 92.3 83.7 99.5 65.7 51.6 91.0 76.4 Polypropylene - - - - - - - - - - - - Others 10.2 17.6 18.7 16.5 29.1 40.1 39.2 46.0 26.3 42.8 60.1 40.4 Imports 28.6 45.9 44.3 58.4 106.8 128.2 145.0 157.7 168.1 174.2 124.7-28.4 Ammonia 19.6 12.8 8.8 3.5 21.5 18.6 10.2 4.5 34.1 28.1 - - Benzene 6.1 1.8-4.0 - - - - - - - - Polyethylenes - 1.2 1.8 11.2 6.1 - - - - - - - Propylene - 2.0 - - - - - - - - - - Toluene 2.1 10.0 0.9 8.0 2.4 8.8 13.7 34.8 31.1 - - - Xylenes - 1.0 1.0 11.9 17.0 30.2 29.6 31.6 24.4-7.9 - Others 0.8 17.0 31.8 19.9 59.7 70.7 91.6 86.8 78.4 146.1 116.9-20.0 117 thousand tonnes Net exports 652.4 634.3 718.2 809.6 628.6 563.7 422.6 336.7 353.1 408.4 359.7-11.9 Exports 780.4 831.8 812.9 914.3 867.2 817.5 692.6 586.6 741.3 676.5 458.0-32.3 Acetaldehyde 36.6 28.9 32.4 6.7 - - - - - - - - Acrylonitrile 2.5 3.1 2.4-6.1-23.4 1.1 - - - - Ammonia 20.1 123.2 0.1 35.9-35.7 56.3 95.7-99.0 31.0-68.7 Sulfur 478.3 444.7 535.0 607.3 493.9 484.2 439.3 367.3 522.0 414.5 297.2-28.3 Benzene - - 22.6 10.4 33.5 21.7 7.3 - - 57.6 3.5-94.0 Polyethylenic wax 0.7 0.6 1.3 0.9 0.2 0.7 0.8 - - 0.0 - - Styrene - 4.2 6.3 18.6 11.7 16.2 12.9 - - 3.1 13.4 325.1 Ethylene 127.9 94.4 93.9 154.8 163.6 79.9 24.4 10.1 97.0 18.5 8.9-51.8 Ethylene glycol 22.7 13.5 32.6 11.9 58.1 32.8 5.1 0.9 1.7 0.3 0.5 50.7 Polyethylenes 45.0 51.5 30.6 23.9 46.6 89.4 73.4 68.8 74.8 45.6 70.8 55.2 Polypropylene - - - - - - - - - - - - Others 46.7 67.6 55.8 43.8 53.3 57.0 49.6 42.7 45.8 37.8 32.7-13.4 Imports 128.1 197.4 94.7 104.7 238.6 253.8 270.0 249.8 388.2 268.2 101.3-62.2 Ammonia 94.1 88.6 35.2 11.0 56.0 50.7 27.0 29.3 107.9 63.8 - - Benzene 19.4 4.2-3.3 - - - - - - - - Polyethylenes - 2.0 1.9 9.9 4.4 - - - - - - - Propylene - 4.5 - - - - - - - - - - Toluene 6.3 27.3 2.1 10.2 3.7 9.2 15.0 36.8 42.1 - - - Xylenes - 2.9 2.0 18.5 22.8 33.2 31.8 29.7 31.8-6.3 - Others 8.2 67.9 53.5 51.8 151.8 160.6 196.2 154.1 206.3 204.3 95.0-53.5 Platform in Ku Camp.

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 15 119 07 7.1 2012 proved oil reserves, selected countries 7.2 2012 proved natural gas reserves, selected countries 7.3 2011 oil production, selected countries 7.4 2011 natural gas production, selected countries 7.5 2010 atmospheric distillation capacity, top petroleum companies 7.6 2010 top petroleum companies by crude oil production 7.7 2010 top petroleum companies by natural gas production 7.8 2010 top petroleum companies by sales International Comparisons

7.1 2012 proved oil reserves, selected countries a 7.2 2012 proved natural gas reserves, selected countries a Rank Country Million barrels 1 Saudi Arabia 264 520 2 Venezuela 211 170 3 Canada 173 625 4 Iran 151 170 5 Iraq 143 100 6 Kuwait 101 500 7 United Arab Emirates 97 800 8 Russia 60 000 9 Libya 47 100 10 Nigeria 37 200 11 Kazakhstan 30 000 12 Qatar 25 380 13 United States 20 682 14 China 20 350 15 Brazil 13 987 16 Algeria 12 200 17 Mexico b 10 161 World total 1 523 225 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 1 680 2 Iran 1 168 3 Qatar 890 4 Saudi Arabia 283 5 United States 273 6 Turkmenistan 265 7 United Arab Emirates 215 8 Venezuela 195 9 Nigeria 180 10 Algeria 159 11 Indonesia 141 12 Iraq 112 13 China 107 14 Kazakhstan 85 15 Malaysia 83 16 Egypt 77 17 Norway 71 18 Uzbekistan 65 19 Kuwait 63 20 Canada 61 33 Mexico 12 World total 6 747 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

7.3 2011 oil production, selected countries 7.4 2011 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 10 331 9 346 5 670 4 076 3 579 2 900 2 550 2 505 2 503 2 498 2 473 2 177 2 105 1 759 1 638 72 759 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 66 222 61 781 16 548 14 017 13 233 11 329 9 938 9 796 7 479 7 479 7 452 7 422 6 594 6 027 4 604 315 978 61 Source: Oil and Gas Journal (March 22, 2012) and Petróleos Mexicanos. Source: Oil and Gas Journal (March 22, 2012) and Petróleos Mexicanos.

7.5 2010 atmospheric distillation capacity, top petroleum companies 7.6 2010 top petroleum companies by crude oil production a Rank Company Country Thousand barrels per day 1 Exxon Mobil United States 6 240 2 Sinopec China 4 914 3 Royal Dutch Shell United Kingdom/Netherlands 3 594 4 CNPC China 3 142 5 PDVSA Venezuela 3 035 6 BP United Kingdom 2 667 7 ConocoPhillips United States 2 657 8 Valero Energy United States 2 640 9 Saudi Aramco Saudi Arabia 2 423 10 Total France 2 363 11 Chevron United States 2 160 12 Petrobras Brazil 2 107 13 JX Holdings Japan 1 831 14 NIOC Iran 1 741 15 Petróleos Mexicanos Mexico 1 540 Rank Company Country Thousand barrels per day 1 Saudi Aramco Saudi Arabia 10 007 2 NIOC Iran 4 292 3 PDVSA Venezuela 2 970 4 Petróleos Mexicanos Mexico 2 953 5 CNPC China 2 840 6 KPC Kuwait 2 556 7 Exxon Mobil United States 2 422 8 INOC Iraq 2 395 9 BP United Kingdom 2 374 10 Rosneft Russia 2 322 11 Petrobas Brazil 2 150 12 Lukoil Russia 1 942 13 Chevron United States 1 923 14 Royal Dutch Shell United Kingdom/Netherlands 1 709 15 Adnoc Abu Dhabi 1 538 62 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.

7.7 2010 top petroleum companies by natural gas production 7.8 2010 top petroleum companies by sales Rank Company Country Million cubic feet per day 1 Gazprom Russia 49 188 2 NIOC Iran 13 292 3 Exxon Mobil United States 12 148 4 Royal Dutch Shell United Kingdom/Netherlands 9 305 5 BP United Kingdom 8 401 6 Saudi Aramco Saudi Arabia 8 121 7 CNPC China 8 018 8 Sonatrach Algeria 7 547 9 Petróleos Mexicanos Mexico 7 020 10 QP Qatar 7 014 11 Uzbekneftegas Uzbekistan 5 816 12 Total France 5 648 13 Petronas Malaysia 5 178 14 Chevron United States 5 040 15 ConocoPhillips United States 4 860 Rank Company Country Million of U.S. dollars 1 Royal Dutch Shell United Kingdom/Netherlands 378 152 2 Exxon Mobil United States 354 674 3 BP United Kingdom 308 928 4 Sinopec Group China 273 422 5 China National Petroleum China 240 192 6 Chevron United States 196 337 7 Total France 186 055 8 ConocoPhillips United States 184 966 9 ENI Italy 131 756 10 Petrobras Brazil 120 052 11 Petróleos Mexicanos Mexico 103 751 12 PDVSA Venezuela 88 361 13 Statoil Norway 87 646 14 Lukoil Russia 86 078 15 Petronas Malaysia 76 876 16 Repsol YPF Spain 70 456 63 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.

Glossary and Nomenclature 129

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

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

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

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$/b Million pesos Dollars per barrel The statistical yearbook contains Petróleos Mexicanos information as of December 31, 2011. MTBE STPS INPC Ps. Methyl tertiary butyl ether Special Tax on Production and Services National Consumer Price Index Mexican pesos US$/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, 11311 or by calling: (52) 55-19448028. 68 CAPEX Capital expenditure Negligible figure LD Low Density - Null value HD High Density -

2012 www.pemex.com Statistical Year Book Morelos Petrochemical Center