Matthew Hairford

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.

San Mateo Midstream LLC provides midstream gathering, processing and disposal services. The firm offers natural gas gathering and processing, salt water gathering and disposal and crude oil gathering services. The company was founded in February 2017 and is headquartered in Dallas, TX.

MRC Energy Co. explores, develops, produces, and acquires oil and natural gas resources. The company is headquartered in Dallas, TX.

Part of Kinder Morgan, Inc., Sonat, Inc. explores for, acquires, develops, produces, and transmits oil and natural gas. The private company is based in Birmingham, AL.