G. Gene Gradick

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.

J-W Operating Co. designs, manufactures and distributes natural gas compression. It focuses on natural gas compression, gathering, exploration, production and gas measurement. The firm operates in Texas, Louisiana, Oklahoma, Arkansas, New Mexico, Kansas, Colorado, Utah, Wyoming, California, Montana, Kentucky, West Virginia, Ohio, Pennsylvania and North Dakota. The company was founded in November 10, 1960 by Howard George Westerman and Thomas Jeffrey and is headquartered in Addison, TX.

Delhi Gas Pipeline Corp. explores oil and natural gas. The company is headquartered in Dallas, TX.

Legacy Measurement Solutions, Inc. engages in the manufacture and wholesale of gas measurement equipment, supplies, and services. It offers engineered measurement, production and process equipment, operating supplies, and services to the oil and natural gas industry, including: engineered ultrasonic and orifice measurement stations, custom or standard meter tubes, LACT Units, gas production units, production equipment, process equipment, power supply equipment, and fabricated buildings along with a full complement of field, lab, and gas accounting services. The company was founded in 1987 and is headquartered in Addison, TX.

Part of Marathon Oil Corp., Texas Oil & Gas Corp. is an oil and gas exploration and American production company. Texas Oil & Gas was acquired by USX Corp. /Old/ on February 28, 1986 for $4,094.40 million.