William J. Scarff

Anadarko Petroleum Corp. is an independent exploration and production company. It operates through the following segments: Exploration and Production; WES Midstream; and Other Midstream. The Exploration and Production segment focuses on the exploration, development, production, and sale of oil and natural gas. The WES Midstream and Other Midstream segment consists of gathering, compressing, treating, processing, and transporting of natural gas; gathering, stabilizing, and transporting of oil and natural gas liquids. The company was founded in 1959 and is headquartered in The Woodlands, TX.

Burlington Resources, Inc. explored, developed and produced oil and gas. The company is headquartered in Houston, TX.

Natural Gas Partners LLC (NGP) is a private equity firm, a subsidiary of NGP Energy Capital Management, LLC founded in 1988 by David Russell Albin and Kenneth Alfredo Hersh. The firm is headquartered in Dallas, Texas.

Marathon Oil Co. engages in exploring, transporting and markets crude oil and natural gas properties. The company is headquartered in Houston, TX.

Memorial Production Partners LP engages in the acquisition, exploitation, development, and production of oil and natural gas properties. Its projects are located in South Texas, East Texas/Louisiana, Rockies, California, and Permian. The company was founded in April 2011 and is headquartered in Houston, TX.

Memorial Resource Development LLC operated as a crude petroleum and natural gas extraction company. The company was founded on October 26, 2011 and was headquartered in Houston, TX.

Range Resources - Louisiana, Inc. engaged in acquisition, exploration and development of natural gas and oil properties. The company was founded on January, 2014 was headquartered in Houston, TX.

Hilcorp Energy Co. operates as a oil and natural gas exploration and production company. Its operating areas include the Gulf coast of Texas and Louisiana, the Northeast United States, and Alaska's Cook Inlet and North Slope. The company was founded by Jeffery D. Hildebrand in 1989 and is headquartered in Houston, TX.