Mariner Energy, Inc. operates as an independent oil and gas exploration, development, and production company. The company has operations principally in the Spraberry, Dean, Wolfcamp, and Wolfberry trends located in the Permian Basin in Texas; and in the Gulf of Mexico, both shelf and deepwater. As of December 31, 2008, it had estimated proved reserves of 973.9 billion cubic feet equivalent. The company was incorporated in 1983 and is headquartered in Houston, Texas with additional offices in Midland, Texas; and Lafayette, Louisiana.