Pioneer Natural Resources Co is a Delaware corporation formed in 1997. The Company is an oil and gas exploration and production company with operations in the United States. The Company explores for, develops and produces oil and gas reserves and in doing so sells homogenous oil, NGL and gas units. The Company conducts its operations through Permian Basin, Eagle Ford Shale, Barnett Shale, Rockies, Mid-Continent, Alaska and Vertical Integration & EFS Midstream. The Company conducts its drilling operations in Texas' Spraberry/Wolfcamp oil field in the Permian Basin and the Eagle Ford Shale play in South Texas. It has its natural gas operations in the Rockies and Mid-Continent regions with assets in the coal bed methane-rich Raton Basin as well as in the Hugoton and Texas Panhandle gas fields. The Company's operations also include its ongoing drilling programs in Texas' liquids-rich Barnett Shale Combo play and in Alaska's Oooguruk field. The Company focuses its efforts towards maximizing its average daily production of oil, NGLs and gas through development drilling, production enhancement activities and acquisitions of producing properties. For the year ended December 31, 2015, the Company's production from continuing operations of 74 MMBOE, excluding field fuel usage, represented a 12 percent increase over production from continuing operations during 2014. The Company competes with a large number of companies, producers and operators in a number of areas such as; seeking to acquire oil and gas properties suitable for development or exploration, marketing oil, NGL and gas production; and seeking to acquire the equipment and expertise, including trained personnel, necessary to evaluate, operate and develop properties. Its operations are subject to stringent and complex foreign, federal, state and local laws and regulations governing environmental protection as well as the discharge of materials into the environment.