Mariner Energy Begins Exchange Offer for Senior Notes Due 2013

Mariner Energy

Mariner Energy, Inc. (NYSE: ME - News) has commenced an exchange offer for its outstanding 7 1/2% Senior Notes due 2013. These notes originally were issued in an April 24, 2006 private offering in an aggregate principal amount of $300,000,000. Holders of these notes may exchange them for a like principal amount of a new issue of 7 1/2% Senior Notes due 2013 pursuant to an effective registration statement on Form S-4 filed with the Securities and Exchange Commission. Terms of the new notes are substantially identical to those of the original notes, except that the transfer restrictions, registration rights and special interest provisions relating to the original notes do not apply to the new notes. Original notes that are not exchanged will continue to be subject to transfer restrictions. The new registered notes will not be subject to transfer restrictions.

The exchange offer will expire at 5:00 p.m., New York City time, on November 9, 2006, unless extended. Tenders of the original notes must be made before the exchange offer expires and may be withdrawn at any time before the exchange offer expires.

Documents describing the terms of the exchange offer, including the prospectus and transmittal materials for making tenders, can be obtained from the exchange agent, Wells Fargo Bank, N.A., Corporate Trust Operations, Sixth and Marquette, MAC N9303-121, Minneapolis, MN 55479, telephone (800) 344-5128.

This news release is for informational purposes only and is not an offer to buy or the solicitation of an offer to sell any securities of Mariner. The exchange offer is being made only pursuant to the exchange offer documents, including the prospectus and the letter of transmittal that are being distributed to holders of the original notes and have been filed with the Securities and Exchange Commission.