Sierra Madre de Chiapas-Peten Foldbelt Geologic Province 5310

# ## # ÚÊ ####### # #### # ####### # 95 90 ######### ### ####### ## ### ### Gulf

20 # of # # ## ## ## Mexico ## # ## ###### # # ### # # #### # # ## # ## ÚÊVeracruz # # ### ### # ## ### # # ## # # # # # # ### #### ##### ##### # #### ### # ### #### ### #### # # # ### ##### # #### #### # ##### # ######## # # ## ## ### ### ### # ## # # #5##3#0##5 ### # ####### # 5304 ### # 5302 ## ## # ### Belize ÚÊ ÚÊ Oaxaca Belmopan Mexico

Gulf of Guatemala Tehuantepec 15 ÚÊ Guatemala Pacific Ocean

ÚÊ San Salvador 0 100 200 300 KILOMETERS Pimienta-Tamabra Total Petroleum System 530501

Pimienta-Tamabra Total Petroleum System 530501 Sierra Madre de Chiapas-Peten Foldbelt Geologic Province 5310 Other geologic province boundary Sierra Madre de Chiapas-Peten Foldbelt, Province 5310 Assessment Results Summary - Allocated Resources

[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. MMBNGL, million barrels of natural gas liquids. MFS, minimum field size assessed (MMBO or BCFG). Prob., probability (including both geologic and accessibility probabilities) of at least one field equal to or greater than the MFS. Results shown are fully risked estimates. For gas fields, all liquids are included under the NGL (natural gas liquids) category. F95 represents a 95 percent chance of at least the amount tabulated. Other fractiles are defined similarly. Fractiles are additive under the assumption of perfect positive correlation. Shading indicates not applicable]

Code Undiscovered Resources and Field MFS Prob. Oil (MMBO) Gas (BCFG) NGL (MMBNGL) Type (0-1) F95 F50 F5 Mean F95 F50 F5 Mean F95 F50 F5 Mean

5310 Total: Assessed onshore portions of Sierra Madre de Chiapas-Peten Foldbelt Province Oil Fields 302 869 1,550 890 559 1,680 3,337 1,775 31 98 213 106 1.00 Gas Fields 7 45 217 70 0 2 10 3

Total 1.00 302 869 1,550 890 566 1,725 3,554 1,846 31 100 222 110

5310 Total: Assessed offshore portions of Sierra Madre de Chiapas-Peten Foldbelt Province Oil Fields 0 0 0 0 0 0 0 0 0 0 0 0 0.00 Gas Fields 0 0 0 0 0 0 0 0

Total 0.00 0 0 0 0 0 0 0 0 0 0 0 0

5310 Grand Total: Assessed portions of Sierra Madre de Chiapas-Peten Foldbelt Province Oil Fields 302 869 1,550 890 559 1,680 3,337 1,775 31 98 213 106 1.00 Gas Fields 7 45 217 70 0 2 10 3

Total 1.00 302 869 1,550 890 566 1,725 3,554 1,846 31 100 222 110

Page 1 Sierra Madre de Chiapas-Peten Foldbelt, Province 5310 Assessment Results Summary - Allocated Resources

[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. MMBNGL, million barrels of natural gas liquids. MFS, minimum field size assessed (MMBO or BCFG). Prob., probability (including both geologic and accessibility probabilities) of at least one field equal to or greater than the MFS. Results shown are fully risked estimates. For gas fields, all liquids are included under the NGL (natural gas liquids) category. F95 represents a 95 percent chance of at least the amount tabulated. Other fractiles are defined similarly. Fractiles are additive under the assumption of perfect positive correlation. Shading indicates not applicable]

Code Undiscovered Resources and Field MFS Prob. Oil (MMBO) Gas (BCFG) NGL (MMBNGL) Type (0-1) F95 F50 F5 Mean F95 F50 F5 Mean F95 F50 F5 Mean

530501 Pimienta-Tamabra Total Petroleum System 53050101 El Abra-Like Reef and Backreef Limestone Assessment Unit (1% of undiscovered oil fields and 1% of undiscovered gas fields allocated to ONSHORE province 5310) Oil Fields 1 1 3 6 3 1 3 8 4 0 0 1 0 1.00 Gas Fields 6 0 1 3 1 0 0 0 0

Total 1.00 1 3 6 3 1 4 11 5 0 0 1 0

53050102 Tamabra-Like Debris-Flow-Breccia Limestone Overlying Evaporites Assessment Unit (9% of undiscovered oil fields and 9% of undiscovered gas fields allocated to ONSHORE province 5310) Oil Fields 3 301 866 1,544 887 558 1,677 3,329 1,772 31 97 212 106 1.00 Gas Fields 18 7 44 214 69 0 2 10 3

Total 1.00 301 866 1,544 887 565 1,721 3,543 1,840 31 99 222 109

Page 2 Sierra Madre de Chiapas-Peten Foldbelt, Province 5310 Undiscovered Field-Size Distribution 3 Minimum field size: 1 MMBO

2.5 Mean number of undiscovered fields: 12

2

1.5

1

0.5 UNDISCOVERED OIL FIELDS (No.)

0 1-<2 2-<4 4-<8 8-<16 16-<32 32-<64 64- 128- 256- 512- 1024- 2048- <128 <256 <512 <1024 <2048 <4096 OIL-FIELD SIZE (MMBO) Sierra Madre de Chiapas-Peten Foldbelt, Province 5310 Undiscovered Field-Size Distribution 0.06 Minimum field size: 6 BCFG

0.05 Mean number of undiscovered fields: <.5

0.04

0.03

0.02

UNDISCOVERED GAS FIELDS (No.) 0.01

0 6-<12 12-<24 24-<48 48-<96 96-<192 192- 384- 768- 1536- 3072- 6144- 12288- <384 <768 <1536 <3072 <6144 <12288 <24576

GAS-FIELD SIZE (BCFG)