Mariner Energy, Inc. confirms that a fire has occurred at a production platform located on Vermilion Block 380, approximately 100 miles from the Louisiana coast. All 13 members of the crew have been evacuated and safely accounted for. No injuries have been reported. In an initial flyover, no hydrocarbon spill was reported.

Mariner has notified and is working with regulatory authorities in response to this incident. The cause is not known, and an investigation will be undertaken. During the last week of August 2010, production from this facility averaged approximately 9.2 million cubic feet of natural gas per day and 1,400 barrels of oil and condensate. Updated information will be provided as available.

About Mariner Energy, Inc. Mariner Energy is an independent oil and gas exploration, development, and production company headquartered in Houston, Texas, with principal operations in the Permian Basin, South Texas and the Gulf of Mexico. For more information about Mariner, visit the company's website at www.mariner-energy.com.