Sanchez Production Partners LLC focuses on the exploration, development, and production of oil and natural gas properties, as well as midstream assets in the United States. The company's proved reserves are located in the Cherokee Basin in Oklahoma, the Woodford Shale in the Arkoma Basin in Oklahoma, the Central Kansas Uplift in Kansas, and in Texas and Louisiana. As of December 31, 2013, it had approximately 91.3 Bcfe of estimated proved reserves; and owned approximately 1,995 net producing wells. The company was formerly known as Constellation Energy Partners LLC and changed its name to Sanchez Production Partners LLC in October 2014. Sanchez Production Partners LLC was founded in 2005 and is headquartered in Houston, Texas.