Anadarko Petroleum Corporation engages in the exploration, development, production, and marketing of oil and gas properties. It operates through three segments: Oil and Gas Exploration and Production; Midstream; and Marketing. The Oil and Gas Exploration and Production segment explores for and produces oil, condensate, natural gas, and natural gas liquids (NGLs). The Midstream segment provides gathering, processing, treating, and transportation services to Anadarko and third-party oil, natural-gas, and NGLs producers, as well as owns and operates gathering, processing, treating, and transportation systems in the United States. The Marketing segment markets oil, natural gas, and NGLs in the United States; oil and NGLs internationally; and anticipated liquefied natural gas production from Mozambique. The company’s asset portfolio includes U.S. onshore resource plays in the Rocky Mountains area, the southern United States, the Appalachian basin, and Alaska; the deepwater Gulf of Mexico; and in Algeria, Ghana, Mozambique, Colombia, Côte d’Ivoire, New Zealand, Kenya, and other countries. As of December 31, 2015, it had approximately 2.1 billion barrels of oil equivalent of proved reserves. Anadarko Petroleum Corporation was founded in 1959 and is headquartered in The Woodlands, Texas.