Jeffrey A. Fisher

Atlantic Richfield Co. provides oil and gas extraction and production services . The firm's exploration and production operations are focused primarily in the Gulf of Mexico and the midcontinent in the United States, the United Kingdom North Sea, Indonesia, China and Algeria. The company was incorporated on April 15, 1985 and is headquartered in Warrenville, IL.

Vastar Resources, Inc. is one of the largest independent oil and natural gas exploration and production companies in the United States. The company is active in approximately 80 fields in some of the nation's most prolific producing areas, including the Gulf of Mexico, the Gulf Coast, the Oklahoma/Arklatex and the Rockies/Hugoton regions. In addition, the company's drilling rigs are exploring for new reserves both onshore and in the promising shelf and deepwater Gulf of Mexico drilling plays, the latter the site of rising industry activity and excitement.

BP America, Inc. transports crude oil and petroleum products. The company was founded in 1987 and is headquartered in Houston, TX.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.

White Star Petroleum LLC operates as an independent oil and natural gas company. It focuses on the acquisition, development, operation and production of unconventional oil and natural gas properties. The company was founded by Aubrey Kerr McClendon in 2013 and is headquartered in Oklahoma City, OK.

Ascent Resources LLC engages in oil and gas exploration and production services. It explores, acquires, develops and produces oil and natural gas in prominent American shale plays. The company was founded in 2014 and is headquartered in Oklahoma, OK.

Ascent Resources Equity Holdings LLC engages in oil and gas production. The company was founded in 2015 and is headquartered in Oklahoma City, OK.

Ascent Resources Utica Holdings LLC is an independent exploration and production company, which engages in the acquisition, operations, and development of natural gas and oil properties in the Utica Shale of the Appalachian Basin. The company is headquartered in Oklahoma City, OK.