| AMERISUR EXPLORACION COLOMBIA LIMITADA | BOGOTA D.C. |
| ANADARKO COLOMBIA COMPANY SUCURSAL COLOMBIA | BOGOTA D.C. |
| ANDES ENERGIA ARGENTINA S A SUCURSAL COLOMBIA | BOGOTA D.C. |
| ANDES PRODUCTION COMPANY LLC SUCURSAL COLOMBIA | BOGOTA D.C. |
| ASEZT ENERGY CORPORATION COLOMBIA | BOGOTA D.C. |
| AZABACHE ENERGY CORP SUCURSAL COLOMBIA | BOGOTA D.C. |
| BC EXPLORACION Y PRODUCCION DE HIDROCARBUROS S L SUCURSAL COLOMBIA | BOGOTA D.C. |
| CANTANA ENERGY SUCURSAL COLOMBIA | BOGOTA D.C. |
| Carrao Energy S.A. Sucursal Colombia | BOGOTA D.C. |
| CECSA ENERGY INC (SUCURSAL EN COLOMBIA) | BOGOTA D.C. |
| CEIBO ENERGY CORP SUCURSAL COLOMBIA | BOGOTA D.C. |
| CEPSA COLOMBIA S.A. | BOGOTA D.C. |
| CIMARRONA LIMITED LIABILITY COMPANY | BOGOTA D.C. |
| CNE ENERGY SAS | BOGOTA D.C. |
| CNOOC PETROLEUM COLOMIBA LIMITED | BOGOTA D.C. |
| CNPC INTERNATIONAL SUCURSAL COLOMBIA | BOGOTA D.C. |
| Colcco SA | BOLIVAR |
| COLOMBIA ENERGY DEVELOPMENT CO. | BOGOTA D.C. |
| COLPAN OIL & GAS LTDA SUCURSAL COLOMIBIA | BOGOTA D.C. |
| COMTROL COLOMBIA S.A. | BOGOTA D.C. |
| CONOCOPHILLIPS COLOMBIA VENTURES LTD SUCURSAL COLOMBIA | BOGOTA D.C. |
| CPVEN E&P CORP SUCURSAL COLOMBIA | BOGOTA D.C. |
| ECOPETROL COSTA AFUERA COLOMBIA SAS | BOGOTA D.C. |
| EMERALD ENERGY PLC SUCURSAL COLOMBIA | BOGOTA D.C. |
| EQUION ENERGIA LIMITED | BOGOTA D.C. |
| EXXONMOBIL EXPLORATION COLOMBIA LIMITED | BOGOTA D.C. |
| Frontera Energy Colombia Corp., Sucursal Colombia | BOGOTA D.C. |
| GEO TECHNOLOGY LA SUCURSAL COLOMBIA | BOGOTA D.C. |
| GEOPARK COLOMBIA SAS | BOGOTA D.C. |
| GOAM 1 C.I S.A.S | BOGOTA D.C. |
| GRAN TIERRA COLOMBIA INC SUCURSAL | BOGOTA D.C. |
| GRAN TIERRA ENERGY COLOMBIA, LLC SUCURSAL | BOGOTA D.C. |
| GREEN POWER SUCURSAL COLOMBIA | BOGOTA D.C. |
| GULFSANDS PETROLEUM PLC SUCURSAL COLOMBIA | BOGOTA D.C. |
| HOCOL S.A. | BOGOTA D.C. |
| HUPECOL META SUCURSAL COLOMBIA | BOGOTA D.C. |
| IBEROAMERICANA DE HIDROCARBUROS CQ EXPLORACIÓN & PROD. | BOGOTA D.C. |
| INFINITY OIL LIMITED | BOGOTA D.C. |
| INTEROIL COLOMBIA EXPLORATION AND PRODUCTION | BOGOTA D.C. |
| IONOS DIRECTIONAL SERVICES SAS | BOGOTA D.C. |
| JOSHI TECHNOLOGIES INTERNATIONAL INC. SUCURSAL COLOMBIA | BOGOTA D.C. |
| LA LUNA E&P S DE RL SUCURSAL COLOMBIA | BOGOTA D.C. |
| LAS QUINCHAS PETROLEUM | BOGOTA D.C. |
| LAS QUINCHAS RESOURCE CORP SUCURSAL COLOMBIA | BOGOTA D.C. |
| MAJOR INTERNATIONAL OIL SA EN LIQUIDACION | BOGOTA D.C. |
| MANSAROVAR ENERGY COLOMBIA LTD | BOGOTA D.C. |
| MASERING OIL & GAS VSM 22 INC | BOGOTA D.C. |
| MAUREL & PROM COLOMBIA B.V | BOGOTA D.C. |
| MAUREL & PROM SA SUR AMERICA | BOGOTA D.C. |
| MKMS ENERJI SUCURSAL COLOMBIA | BOGOTA D.C. |
| MOMPOS OIL COMPANY INC | BOGOTA D.C. |
| NEW GRANADA ENERGY CORPORATION SUCURSAL COLOMBIANA | BOGOTA D.C. |
| NIKOIL ENERGY CORP SUC COLOMBIA | BOGOTA D.C. |
| OIRU CORPORATION | BOGOTA D.C. |
| OMEGA ENERGY COLOMBIA | BOGOTA D.C. |
| ONGC VIDESH LIMITED SUCURSAL COLOMBIANA | BOGOTA D.C. |
| PAREX RESOURCES COLOMBIA LTD. SUCURSAL | BOGOTA D.C. |
| PERENCO COLOMBIA LIMITED | BOGOTA D.C. |
| PERENCO OIL AND GAS COLOMBIA LIMITED | BOGOTA D.C. |
| PETRO CARIBBEAN RESOURCES LTD | BOGOTA D.C. |
| PETRODORADO SOUT AMERICA S.A. SUCURSAL COLOMBIA | BOGOTA D.C. |
| PETROLEOS COLOMBIANOS SA | BOGOTA D.C. |
| PETROLIFERA PETROLEUM COLOMBIA LIMITED | BOGOTA D.C. |
| PETROSANTANDER COLOMBIA GMBH | BOGOTA D.C. |
| POWER 2020 OVERSEAS MANAGEMENT CORP | ATLANTICO |
| REPSOL COLOMBIA OIL & GAS LIMITED | BOGOTA D.C. |
| REPSOL EXPLORACION COLOMBIA SA | BOGOTA D.C. |
| SAINT-AUBIN INTERNATIONAL SAS | BOGOTA D.C. |
| Samaria Llanos Exploration Sucursal Colombia | BOGOTA D.C. |
| SANTIAGO OIL COMPANY | BOGOTA D.C. |
| SHELL EXPLORATION AND PRODUCTION COLOMBIA GMBH (SEPC) SUC. C | BOGOTA D.C. |
| SIERRACOL ENERGY ANDINA, LLC. | BOGOTA D.C. |
| SIERRACOL ENERGY ARAUCA, LLC. | BOGOTA D.C. |
| SK INNOVATION CO LTD | BOGOTA D.C. |
| SOUTHEAST INVESTMENT CORPORATION | BOGOTA D.C. |
| STATOIL COLOMBIA SUCURSAL | BOGOTA D.C. |
| TECPETROL COLOMBIA S.A.S. | BOGOTA D.C. |
| Telpico Colombia LLC | BOGOTA D.C. |
| TOTAL E&P COLOMBIE SUCURSAL COLOMBIA | BOGOTA D.C. |
| TPL COLOMBIA LTD SUCURSAL COLOMBIA | BOGOTA D.C. |
| VERANO ENERGY LIMITED SUCURSAL | BOGOTA D.C. |
| VETRA EXPLORACIÓN Y PRODUCCIÓN COLOMBIA S.A.S. | BOGOTA D.C. |
APS