William Albrecht

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.

Spindletop Charities, Inc. promotes goodwill and fellowship within the oil and gas industry while benefiting children in need. It offers programs targeting child abuse prevention, pediatric medical research, drug and alcohol abuse prevention and rehabilitation, education and scholarships, school safety, therapeutic services and after-school programs, and family health. The company was founded by Loy D. Griffin in 1966 and is headquartered in Houston, TX.

Western States Petroleum Association engages in petroleum exploration, production, refining, transportation, and marketing. The private company is based in Sacramento, CA.

Terra Energy Partners LLC engages in the exploration and production of oil and natural gas. It acquires and develops long-lived producing oil and gas assets in North America. The company was founded by Michael S. Land in 2015 and is headquartered in Houston, TX.