Matthew Bob

Callon Petroleum Co. engages in the exploration, development, acquisition, and production of oil and natural gas properties in the United States. It focuses on unconventional oil and natural gas reserves in the Permian Basin. The company was founded by Sim C. Callon and John S. Callon in 1950 and is headquartered in Houston, TX.

Southcross Energy LLC engages in the provision of natural gas processing and transportation services. The company was founded in 2009 and is headquartered in Dallas, TX.

Southcross Energy Partners LLC provided natural gas gathering, processing, treating, compression and transportation services, and natural gas liquids (NGL) fractionation and transportation services. It also sources, purchased, transported, and sold natural gas and NGL's to its power generation, industrial, and utility customers primarily under fixed-spread contracts. The company was founded in 2009 and is headquartered in Houston, TX.

The Society of Exploration Geophysicists operates as an association of exploration geophysicists. The non-profit company is based in Tulsa, OK and has subsidiaries in the United States.

The Dallas Petroleum Club operates petroleum clubs. The private company is based in Dallas, TX.

Eagle Oil & Gas Co. engages in acquisition, development, and exploration of oil and gas reserves. The company was founded by Pat S. Bolin and Warren T. Ayres in 1976 and is headquartered in Dallas, TX.

Hallwood Petroleum LLC engages in exploration and development onshore drilling. The company is headquartered in Frisco, TX.