Brett Woltjen

Kerr-McGee Corp. is an energy and inorganic chemical. It subsidiaries, joint ventures and other affiliates have operations throughout the world. The company core business, which include exploration, production of oil and gas resources. It was founded in 1929 and is headquartered Oklahoma City, Ok

BASA Resources, Inc. extracts oil and natural gas. It specializes in the acquisition and recovery of oil and gas reserves from mature wells that require the use of special techniques known as secondary and tertiary recovery. The company was founded by Michael N. Foster and Lary D. Knowlton in May 1989 and is headquartered in Dallas, TX.

American Petroleum Institute (API) is the only national trade association that represents all aspects of America's oil and natural gas industry. Its more than 400 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. They are producers, refiners, suppliers, pipeline operators and marine transporters, as well as service and supply companies that support all segments of the industry.

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.

Part of Valero Energy Corp., Valero Energy Partners GP LLC is an Investment Company Vehicle. Joseph W. Gorder has been the CEO of the American company since 2013.