Anadarko Petroleum Corporation engages in the exploration, development, production, and marketing of oil and gas properties. It operates through three segments: Exploration and Production, WES Midstream, and Other Midstream. The company explores for and produces oil, natural gas, and natural gas liquids (NGLs). It also engages in gathering, processing, treating, and transporting oil, natural-gas, and NGLs production, as well as the gathering and disposal of produced water. The company's oil and natural gas properties are located in the United States onshore and deepwater Gulf of Mexico; and Algeria, Ghana, Mozambique, Colombia, and other countries. As of December 31, 2017, it had approximately 1.4 billion barrels of oil equivalent of proved reserves. Anadarko Petroleum Corporation was founded in 1959 and is headquartered in The Woodlands, Texas.