Aera Energy LLC
California oil and gas producer with operating properties extending from the LA Basin in the south to the Sacramento Delta in the north.
American International Petroleum Corporation
Explores for, develops, produces, refines and markets oil and natural gas. (Nasdaq: AIPN)
American Shoreline, Inc. (AMSHORE)
Operations focus in Colorado, New Mexico and Texas.
Ameritex Minerals, Inc.
Texas operator using 3D seismic to generate prospects.
Amity Oil Limited
Australian-based, operating in Turkey, Australia, and in the Anadarko basin in Oklahoma and Kansas.
Anadarko Petroleum Corporation
Operations in Alaska, western Canada, Rocky Mountains, mid- continent, Permian, Texas, Louisiana and Gulf of Mexico; and internationally in Algeria, Tunisia, West Africa and Australia (NYSE: APC).
Anglo Siberian Oil Company plc
British company operating in Russia.
Anglo-Suisse Offshore Partners, LLC
ASOP is a Houston-based independent oil and gas company focused on the acquisition and exploitation of producing assets domestically and abroad.
AO Tatneft
Explores for and produces oil in Russia. (NYSE: TNT).
Apache Corporation
Operations in the United States, Canada, Egypt, Western Australia, Argentina, Poland and China.
Aruba Petroleum Inc.
Operations focused on Barnett Shale plays in north Texas, and on the Anakarko Basin in Oklahoma.
Aspen Exploration Corporation
Operating primarily in northern California.
Austral Pacific Energy Ltd.
New Zealand company, operating in the Austral-Pacific region.
Beck Pump and Supply Co.
Oil and gas operator in Oklahoma, Kansas and Texas.
Berry Petroleum Co.
Independent oil producer located in southern California. (NYSE: BRY)
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