Operadoras en colombia

| AMERICAN INTERNATIONAL PETROLEUM CORPORATION OF COLOMBIA - AIPC |
| ARCO DE COLOMBIA INC. |
| ARGOSY ENERGY INTERNATIONAL |
| BP EXPLORATION COMPANY (COLOMBIA) LTD. |
| CAN WESTEXPLORATION INC. |
| CANADIAN PETROLEUM COLOMBIA LIMITED |
| CASA INGLESA LTDA. |
| CHEVRON PETROLEUM COMPANY OF COLOMBIA |
| CITY COLOMBIA LTD. |
| COCODRILL OIL - COMPAÑIACOLOMBIANA DE PERFORACION Y PRODUCCION DE PETROLEO LTDA. |
| COMPAÑIA DE PETROLEOS CORDILLERA S.A. - COPECO |
| COMPAÑIA PETROLERA EL RIO |
| COMPAÑIA PETROLERA TRANSANDINA |
| CRESCENT OILCOLOMBIA, INC. |
| DOREAL ENERGY COLOMBIA LTD. |
| EMERALD ENERGY COLOMBIA |
| EMPRESA COLOMBIANA DE PETROLEOS - ECOPETROL |
| ESSO COLOMBIANA LIMITED |
| EXPLOTACIONES CMS NOMECOINC. |
| GEOMET INC. |
| GEOPOZOS S.A. |
| GHK COMPANY COLOMBIA |
| HARKEN DE COLOMBIA LTD. |
| HERITAGE MINERALS LTD. |
| HOCOL S.A. |
| HUPECOL |
| INDEPENDENCE S.A. || KAPPA RESOURCES COLOMBIA LTD. |
| LL & E COLOMBIA INC. |
| LLANOS OIL EXPLORATION INC. - LLANOS OIL EXPLORATION LTD. |
| MOBIL DE COLOMBIA |
| MOHAVE COLOMBIA CORPORATION |
|NEO ENERGY INC. |
| OCCIDENTAL DE COLOMBIA INC. |
| OMIMEX DE COLOMBIA LTD. |
| PECS PETROMAR DE COLOMBIA LTDA. |
| PERENCO COLOMBIA S.A. |
| PETROBRAS COLOMBIA LIMITED |
|PETROBRAS INTERNACIONAL S.A. - BRASPETRO |
| PETROLEOS COLOMBIANOS LTD. - PETROCOL |
| PETROLEOS DEL MAR |
| PETROLEOS DEL NORTE S.A. |
| PETROLERA ARGENTINA SAN JORGE S.A. |
|PETROLERA SANTA FE (COLOMBIA) LTD. |
| PETROMINEROS, S.A. |
| PETROSANTANDER (COLOMBIA) INC. |
| PETROSIM & ASOCIADOS S.A. |
| PETROTESTING COLOMBIA S.A. |
| PLUSPETROL COLOMBIACORPORATION |
| QRC COLOMBIA LTD. |
| RAM PETROLEUMS LIMITED |
| REPSOL EXPLORACION COLOMBIA, S.A. |
| SABACOL INC. |
| SEVEN SEAS PETROLEUM COLOMBIA INC. |
| SHELL EXPLORADORA Y...