Chaparral is an independent oil and natural gas production and exploitation company headquartered in Oklahoma City, Oklahoma. Since its inception in 1988, Chaparral has increased reserves and production primarily by acquiring and enhancing properties in its core areas of the Mid-Continent and the Permian Basin. Beginning in 2000, Chaparral expanded its geographic focus to include additional areas of Gulf Coast, Ark-La-Tex, North Texas, and the Rocky Mountains. For more information on Chaparral please visit www.chaparralenergy.com.

United Refining Energy Corp. (URX) is a special purpose acquisition company formed in 2007 for the purpose of acquiring through a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination one or more businesses or assets in the energy industry.