| Texas American Resources, LLC. | United States |
Private
|
| 0915988 B.C. Ltd. | Canada |
Private
|
| 3-D Geophysical, Inc. | United States |
Private
|
| 3DX Technologies Inc. | United States |
Private
|
| 3TEC Energy Corporation | United States |
Private
|
| A.I.D. Fuel Oils Ltd | United Kingdom |
Private
|
| Aabar Petroleum Investments Company PJSC | United Arab Emirates |
Private
|
| Abacan Resource Corporation | Canada |
Private
|
| Abbot Group Ltd | United Kingdom |
Private
|
| Ability Drilling ASA | Norway |
Private
|
| Abingdon Exploration Ltd. | Canada |
Private
|
| Abu Dhabi Marine Areas Ltd | United Kingdom |
Private
|
| Abu Dhabi National Oil Company | United Arab Emirates |
Private
|
| Abu Dhabi Petroleum Co Ltd | United Kingdom |
Private
|
| Acadian Energy Inc. | United States |
Private
|
| Acclaim Energy Inc | Canada |
Private
|
| Acclaim Energy Trust | Canada |
Private
|
| Accrete Energy Inc. | Canada |
Private
|
| Acer Energy Limited | Australia |
Private
|
| Acergy West Africa Ltd | United Kingdom |
Private
|
| Acorn Oil & Gas Ltd | United Kingdom |
Private
|
| Adda Resources Ltd. | Canada |
Private
|
| Addax Petroleum Corporation | Switzerland |
Private
|
| Adler & Allan Ltd | United Kingdom |
Private
|
| Administracion Nacional de Combustibles Alcohol y Portland | Uruguay |
Private
|
| Adobe Resources Inc | United States |
Private
|
| Adriatic Oil PLC | United Kingdom |
Private
|
| AECO Gas Storage Partnership | United States |
Private
|
| AED Oil Ltd | Australia |
Private
|
| Aera Energy, Llc | United States |
Private
|
| Afren Okoro Ltd | United Kingdom |
Private
|
| Afren PLC | United Kingdom |
Private
|
| Afton Chemical Ltd | United Kingdom |
Private
|
| Aganneftegazgeologia | Russia |
Private
|
| AGIP Petroli S.p.A. | Italy |
Private
|
| AGL Upstream Gas (Mos) Pty Limited | Australia |
Private
|
| Air Liquide Japan Ltd. | Japan |
Private
|
| Air Liquide Ltd | United Kingdom |
Private
|
| Air Products Group Limited | United Kingdom |
Private
|
| Air Products Llanwern Ltd | United Kingdom |
Private
|
| Air Products PLC | United Kingdom |
Private
|
| Airgas Northern California And Nevada, Inc | United States |
Private
|
| AIRPORT PETROLEUM LTD | United Kingdom |
Private
|
| Aka Energy Group, LLC | United States |
Private
|
| Al Gulf Coast Terminals, LLC | United States |
Private
|
| Alamco, Inc. | United States |
Private
|
| Alberta Clipper Energy Inc. | Canada |
Private
|
| Alberta Energy Company Ltd. | Canada |
Private
|
| Alexander Energy Corporation | United States |
Private
|
| Alfred Mcalpine Funding Ltd | United Kingdom |
Private
|
| Allegiance Mining Pty Ltd | Australia |
Private
|
| Alliance Energy Inc | Canada |
Private
|
| Alliance Oil Company Ltd | Bermuda |
Private
|
| Alliance Pipeline Limited Partnership | Canada |
Private
|
| Alliance Pipeline LP | United States |
Private
|
| Alliance Resources plc | United Kingdom |
Private
|
| Alliander N.V. | Netherlands |
Private
|
| Allis-Chalmers Energy, Inc. | United States |
Private
|
| Alon Refining Krotz Springs Inc. | United States |
Private
|
| Alon USA Energy Inc | United States |
Private
|
| Alon USA Inc | United States |
Private
|
| Alpha Petroleum Resources Ltd | United Kingdom |
Private
|
| AlphaOne Holdings, LLC | United States |
Private
|
| Alta Gas Plc | United Kingdom |
Private
|
| Alter NRG Corp. | Canada |
Private
|
| Altinex Asa | Norway |
Private
|
| Aluma Systems Inc. | Canada |
Private
|
| Amalgamated Exploration, Inc. | United States |
Private
|
| Amalie Oil Company, Inc. | United States |
Private
|
| AMAREX INC | United States |
Private
|
| AMBAR, Inc. | United States |
Private
|
| Ambassador Oil & Gas Limited | Australia |
Private
|
| Amber Resources Company of Colorado | United States |
Private
|
| AMEC UTILITIES LTD | United Kingdom |
Private
|
| Amerac Energy Corporation | United States |
Private
|
| American Agip Company, Inc. | United States |
Private
|
| American Coastal Energy, Inc | United States |
Private
|
| American Eagle Energy Inc. | United States |
Private
|
| American Energy Production Inc | United States |
Private
|
| American Exploration Company | United States |
Private
|
| American Gold Resources Corp | United States |
Private
|
| American International Petroleum Corporation | United States |
Private
|
| American Petrofina Holding Company | United States |
Private
|
| American Petrofina Inc | United States |
Private
|
| American Refining Group, Inc | United States |
Private
|
| American Resource Technologies Inc | United States |
Private
|
| American Standard Energy Corp | United States |
Private
|
| Ameriwest Energy Corp. | United States |
Private
|
| AMINOIL USA INC | United States |
Private
|
| Amoco Argentina Oil Company | United States |
Private
|
| Amplify Energy Corp. | United States |
Private
|
| Ampolex Ltd. | Australia |
Private
|
| Amromco Energy LLC | United States |
Private
|
| Anadarko Algeria Company, LLC | United Kingdom |
Private
|
| Anadarko Canada Corporation | Canada |
Private
|
| Anadarko Finance Company | United States |
Private
|
| Anadarko Holding Company | United States |
Private
|
| Anatolia Energy Corp. | Canada |
Private
|
| Anderson Exploration Ltd. | Canada |
Private
|
| ANGKOR SHELL LTD | United Kingdom |
Private
|
|
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