John W. Arms

Organized in 1998, Encore is a growing independent energy company engaged in the acquisition, development and exploitation of North American oil and natural gas reserves

Part of Exxon Mobil Corp., Encore Energy Partners GP LLC is a company based in Dallas, TX. Scott W. Smith has been the CEO of the company since 2010.

Enduro Resource Partners LLC engages in the production and development of oil and natural gas from properties. The company was founded by John W. Arms and Jon S. Brumley on March 3, 2010 and is headquartered in Fort Worth, TX.

XTO Energy Inc. operates as a domestic energy producer engaged in the acquisition, development, and discovery of oil and natural gas properties in the United States. It specializes in the development of tight gas, shale gas, coal bed methane, and unconventional oil resources. The company was founded by Steve Palko, Bob Simpson and Jon Brumley in 1986 and is headquartered in Spring, TX.

Part of Occidental Petroleum Corp., Union Pacific Resources, Inc. is a company that is involved in railroads, gas, and oil production. The company is based in Bethlehem, PA.