| COIN HODL INC | Canada |
Private
|
| Colombia Oil and Gas Subsidiary Ltd | Colombia |
Private
|
| Colonial Gas Company | United States |
Private
|
| Colonial Group Inc | United States |
Private
|
| Colorado Wyoming Reserve Co. | United States |
Private
|
| COLUMBUS ENERGY RESOURCES LIMITED | United Kingdom |
Private
|
| Commonwealth Energy System | United States |
Private
|
| Commonwealth Oil Refining Company Inc | United States |
Private
|
| Companhia Petrolifera Marlim | Brazil |
Private
|
| Compania de Petroleos de Chile COPEC S.A. | Chile |
Private
|
| Complete Production Services Inc | United States |
Private
|
| Condensate SC | Kazakhstan |
Private
|
| Connacher Oil & Gas Limited | Canada |
Private
|
| Conoco Mineraloel GmbH | Germany |
Private
|
| ConocoPhillips Australia Funding Company | United States |
Private
|
| ConocoPhillips Canada Resources Corp. | Canada |
Private
|
| ConocoPhillips Holding Company | United States |
Private
|
| Conquest Petroleum Incorporated | United States |
Private
|
| Consolidated Natural Gas Company | United States |
Private
|
| Consolidated Oil & Gas Inc | United States |
Private
|
| Contango Oil & Gas Company | United States |
Private
|
| Continental Energy Corporation | Canada |
Private
|
| Continental Fuels, Inc | United States |
Private
|
| Continental Resources, Inc | United States |
Private
|
| Contour Energy Co | United States |
Private
|
| Copano Energy, LLC | United States |
Private
|
| Cordy Oilfield Services Inc. | Canada |
Private
|
| Core Laboratories N.V. | Netherlands |
Private
|
| Core Resource Management, Inc. | United States |
Private
|
| CoreStream Energy, Inc. | United States |
Private
|
| Corning Natural Gas Corp | United States |
Private
|
| CORPORACION DE RESERVAS ESTRATEGICAS DE PRODUCTOS PETROLIFEROS CORES | Spain |
Private
|
| Corral Petroleum Holdings AB | Sweden |
Private
|
| Correlate Energy Corp. | United States |
Private
|
| Cortez Capital Corporation | United States |
Private
|
| Cosan Lubrificantes e Especialidades S.A. | Brazil |
Private
|
| COSL Singapore Capital Ltd | Singapore |
Private
|
| Cosmo Oil Co., Ltd. | Japan |
Private
|
| Costilla Energy, Inc. | United States |
Private
|
| Cove Energy Limited | United Kingdom |
Private
|
| Crestwood Equity Partners LP | United States |
Private
|
| Crestwood Holdings LP | United States |
Private
|
| Crimson Exploration Inc | United States |
Private
|
| Crocotta Energy Inc. | Canada |
Private
|
| Crown Central LLC | United States |
Private
|
| Crown Oil & Gas Inc. | United States |
Private
|
| CrownRock, L.P. | United States |
Private
|
| Cruiser Oil & Gas Ltd | Canada |
Private
|
| Crusader Energy Group Inc | United States |
Private
|
| CSI Compressco LP | United States |
Private
|
| Culane Energy Corporation | Canada |
Private
|
| Cumberland Oil & Gas Ltd | Canada |
Private
|
| CVI Energy Corporation Limited | Australia |
Private
|
| CVR Refining, LLC | United States |
Private
|
| CYPRESS ENVIRONMENTAL PARTNERS LP | United States |
Private
|
| Cyries Energy Inc. | Canada |
Private
|
| Dailey International, Inc. | United States |
Private
|
| Daleco Resources Corporation | United States |
Private
|
| DANA PETROLEUM LIMITED | United Kingdom |
Private
|
| Dart Energy Pty Ltd | Singapore |
Private
|
| Dawson Production Services Inc | United States |
Private
|
| DCP Midstream LLC | United States |
Private
|
| Deep Rock Oil & Gas Inc | United States |
Private
|
| Deepmatter Group PLC | United Kingdom |
Private
|
| DeepTech International, Inc. | United States |
Private
|
| Deer Park Refining Limited Partnership | United States |
Private
|
| DEK Energy LLC | Canada |
Private
|
| DeKalb-Cherokee Counties Gas District | United States |
Private
|
| Delek Logistics Finance Corp. | United States |
Private
|
| Delek Petroleum Ltd. | Israel |
Private
|
| Delek The Israel Fuel Corp. Ltd. | Israel |
Private
|
| DENBURY INC | United States |
Private
|
| Denbury Management, Inc. | United States |
Private
|
| Deo Petroleum Limited | United Kingdom |
Private
|
| Desmarais Energy Corporation | Canada |
Private
|
| Detector Exploration Ltd. | Canada |
Private
|
| Devon Canada Corporation | Canada |
Private
|
| Devon OEI Operating Inc | United States |
Private
|
| Devon SFS Operating, Inc. | United States |
Private
|
| Devx Energy Inc | United States |
Private
|
| Diamondback O&G LLC | United States |
Private
|
| Diaz Resources Ltd. | Canada |
Private
|
| Distribuidora de Produtos de Petroleo Ipiranga S.A. | Brazil |
Private
|
| DIVERSEY HOLDINGS LIMITED | United States |
Private
|
| Diversified Gas & Oil PLC | United States |
Private
|
| Divestco Inc | Canada |
Private
|
| Dixon Ticonderoga Company | United States |
Private
|
| DNO North Sea PLC | United Kingdom |
Private
|
| DOBI Medical International, Inc. | Canada |
Private
|
| DOF Subsea AS | Norway |
Private
|
| Dolphin Drilling ASA | Norway |
Private
|
| Dolphin Energy Limited | United Arab Emirates |
Private
|
| Dolphin Offshore Enterprises (India) Ltd | India |
Private
|
| Dominion Energy plc | United Kingdom |
Private
|
| Dominion Petroleum Limited | Bermuda |
Private
|
| Donnycreek Energy Inc | Canada |
Private
|
| Dorchester Gas Corporation | United States |
Private
|
| Dow Deutschland Inc. | Germany |
Private
|
| Dragon Oil limited | United Arab Emirates |
Private
|
| Drillers Technology Corporation | Canada |
Private
|
|
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