Apache Corporation, an independent energy company, explores for, develops, and produces natural gas, crude oil, and natural gas liquids (NGLs). The company has operations in onshore assets located in the Permian and Midcontinent/Gulf Coast onshore regions; and offshore assets situated in the Gulf of Mexico region. It also holds onshore assets in Egypt's Western desert; and offshore assets in the North Sea region, including the United Kingdom. In addition, the company has an offshore exploration program in Suriname. As of December 31, 2019, it had total estimated proved reserves of 551 million barrels of crude oil, 186 million barrels of NGLs, and 1.6 trillion cubic feet of natural gas. Apache Corporation was founded in 1954 and is based in Houston, Texas.