Apache Corporation is a Delaware corporation formed in 1954, is an independent energy company that explores for, develops, and produces natural gas, crude oil, and natural gas liquids. It has exploration and production interests in six countries: the U.S., Canada, Egypt, Australia, the U.K. North Sea (North Sea), and Argentina. The Company's North American asset basecomprises operations in the Permian Basin, the Anadarko basin in western Oklahoma and the Texas Panhandle, Gulf Coast onshore and offshore areas of the U.S., and in Western Canada and also has leasehold acreage holdings in the Cook Inlet of Alaska and other areas where it is pursuing exploration opportunities. Its assets were divided into five regions: Permian, Central, Gulf Coast Onshore, Gulf of Mexico Deepwater, and the Gulf of Mexico Shelf. The Company has continued to increase its presence in the region of Canada and holds approximately 5.4 million gross acres across the provinces of British Columbia, Alberta and Saskatchewan. The Company's international assets are located in Egypt, Australia, offshore the U.K. in the North Sea and Argentina. International assets contributed 42 percent of its production and 50 percent of its oil and gas revenues. Its holdings in Australia are focused offshore Western Australia in the Carnarvon, Exmouth, and Browse basins, with production operations in the Carnarvon and Exmouth basins. It has operated in the Carnarvon basin since acquiring the gas processing facilities on Varanus Island and adjacent producing properties in 1993. In total, the Company controls approximately 7.9 million gross acres offshore Western Australia through 30 exploration permits, 18 production licenses, and 9 retention leases. The Company has operations in the provinces of Neuqun, Rio Negro and Tierra del Fuego. It has interests in 31 concessions, exploration permits and other interests totaling 3.3 million gross acres in three of the main Argentine hydrocarbon basins: Neuqun, Austral, and Cuyo. The Company's competitors include national oil companies, integrated oil and gas companies, other independent oil and gas companies and participants in other industries supplying energy and fuel to industrial, commercial and individual consumers. The Company subject to numerous federal, provincial, state, local and foreign country laws and regulations relating to discharge of materials into, and protection of, the environment.