The Company's operations are located Gulf of Mexico, Ghana, Mozambique, Colombia, Côte d'Ivoire, New Zealand, Kenya, and other countries. Midstream: This segment engages in gathering, processing, treating, and transporting Anadarko and third-party oil, natural-gas, and NGLs production. The Company owns and operates gathering, processing, treating, and transportation systems in the United States for oil, natural gas, and NGLs. Marketing: This segment sells much of Anadarko's oil, natural-gas, and NGLs production as well as third-party purchased volumes. The Company actively markets oil, natural gas, and NGLs in the United States; oil and NGLs internationally; and the anticipated LNG production from Mozambique. The Company's competitors include national oil companies, integrated oil and gas companies, independent oil and gas companies, individual producers, gas marketers, and pipeline companies as well as participants in other industries supplying energy and fuel to consumers. The Company's 2015 drilling program was on emerging liquids-rich basins in the United States (onshore and deepwater Gulf of Mexico) and various international locations. Exploration activity in2015 consisted of 28 gross completed wells, which included 22 U.S. onshore wells, 5 international wells, and 1 Gulf of Mexico well. Development activity in 2015 consisted of 902 gross completed wells, which included 892 U.S. onshore wells, 8 international wells, and 2 Gulf of Mexico wells. The operations and properties of the Company are subject to numerous federal, provincial, regional, state, tribal, local, and foreign laws and regulations governing the release of pollutants or otherwise relating to environmental protection.