Occidental Petroleum Corporation
Engages in oil and gas exploration and production in the US and the Middle East. Its chemicals unit manufactures chloralkali products, PVC, and a range of performance products.
Ocean Energy Inc.
Independent with North America onshore, Gulf of Mexico and international operations.
ONEOK, Inc.
Involved in oil and gas production, natural gas processing, gathering, storage and transmission in the mid-continent areas of the United States. Furthermore marketing and trading o…
OPTI Canada Inc.
Proposing to build a heavy oil (bitumen) recovery and upgrading project near Fort McMurray, Alberta. Comments, questions and opinions are invited.
Oracle Energy Inc.
Energy company actively engaged in the exploration and development of a suite of oil prospects situated on Yemen's Red Sea coast proximate to the Saudi Arabian border.
Patterson Energy, Inc.
Performs onshore contract drilling of oil and gas wells. (Nasdaq: PTEN).
Penneco Oil Company, Inc.
Operates in western Pennsylvania and West Virginia. Investors can participate in drilling partnerships.
Pinnacle Energy Ltd.
UK based exploration and production, asset management and consulting company.
Pioneer Natural Resources Company
Large independent with operations in the United States, Canada, Argentina, South Africa, Gabon and Tunisia.
Premier Oil plc.
Exploration and production operations in UKCS, Albania, Indonesia, Myanmar and Pakistan.
Questar Corporation
An energy developer engaged in oil and gas exploration and production, gas processing and gathering, gas and liquids trading, interstate gas transmission and storage, retail gas di…
Ranken Energy Corporation
Operating in Arkansas, Kansas, Oklahoma, Texas, and Utah.
Ridgeway Petroleum, Inc.
Ridgeway Petroleum is currently developing a significant CO2 and helium discovery in Arizona. This accumulation may make Ridgeway one of the North America's largest producers of t…
Royale Energy, Inc.
Explores for, develops and produces oil and natural gas. (Nasdaq: ROYL).
Santos, Ltd.
Explores for, and develops oil and natural gas properties. (Nasdaq: STOSY).
Sovereign Oil & Gas Company
Generate, market and manage international upstream oil and gas projects and property acquisitions, including both industry and government oil companies.
St. Mary Land & Exploration Company
Exploration and enhanced recovery in Anadarko, Williston, and Permian basins. Also Arklatex area, West Texas and coastal Louisiana.
Showing 41–60 of 69 results