Bass Enterprises Production Co

XTO Energy is a domestic energy producer engaged in the acquisition, development and discovery of high-quality, long-lived producing oil and natural gas properties in the United States. Its properties are concentrated in Texas, New Mexico, Arkansas, Oklahoma, Kansas, Wyoming, Colorado, Alaska, Utah and Louisiana. Bob R. Simpson has been the chief executive officer of XTO Energy for more than 20 years. Simpson earned a BSBA degree, and MBA from Baylor University. XTO Energy maintains its headquarters in Fort Worth, Texas. It trades on the New York Stock Exchange under the symbol XTO.

ExxonMobil Corporation is an industry leader in almost every aspect of the energy and petrochemical businesses. The company was formed by the combination of the Exxon and Mobil organizations. It conducts oil and gas exploration and development in various major accessible producing areas in the world. ExxonMobil has one of the largest energy resource bases of any non-government company. It is among the world s largest non-government natural gas marketers and reserves holders. The company is also among the world s largest fuel refiners and manufacturers of lube basestocks used for making motor oils. Its brand names include Exxon, Mobil and Esso. The company has refining operations in more than 25 countries, 42,000 retail services stations in more than 100 countries and lubricants marketing in nearly 200 countries and territories. ExxonMobil Corporation is headquartered in Irving, Texas.

Southwestern Energy Company, founded in 1929, explores, produces and distributes natural gas and oil throughout the United States, including Arkansas, Texas, Louisiana, New Mexico, and Oklahoma. The company conducts its exploration and production activities through its wholly owned subsidiaries, Southwestern Energy Production Company and SEECO. It has oil drilling operations in the Arkoma Basin and East Texas, and exploration facilities in New Mexico. The company s subsidiary, Arkansas Western Gas Company, distributes and transmits natural gas to more than 1 million residential, commercial and industrial customers in northern Arkansas. It also provides natural gas storage and transportation facilities to third-party clients. Southwestern Energy Company is headquartered in Houston.