Photo Release -- Transocean Ltd. Announces Ultra-Deepwater Drillship Discoverer Inspiration Begins Five-Year Contract With Chevron


ZUG, Switzerland, March 11, 2010 (GLOBE NEWSWIRE) -- Transocean Ltd. (NYSE:RIG) today announced that the newbuild ultra-deepwater drillship Discoverer Inspiration has commenced operations for Chevron U.S.A. Inc., a wholly owned subsidiary of Chevron Corporation (NYSE:CVX), in the U.S. Gulf of Mexico under a five-year drilling contract.

Photos accompanying this release are available at http://www.globenewswire.com/newsroom/prs/?pkgid=7200 and http://www.globenewswire.com/newsroom/prs/?pkgid=7201

The dynamically positioned double-hulled Discoverer Inspiration includes the most advanced drilling capabilities in the offshore drilling industry. The vessel is an enhanced version of Transocean's three predecessor Enterprise-class drillships, which have set deepwater drilling records in recent years, including the world water-depth drilling record of 10,011 feet set by the Discoverer Deep Seas while working for Chevron in the U.S. Gulf of Mexico.

One of 25 Ultra-Deepwater Floaters in the Transocean fleet, the Discoverer Inspiration features Transocean's patented dual-activity drilling technology, which allows for parallel drilling operations designed to save time and money in deepwater well construction, compared with conventional rigs. The dual-activity technology, along with a new and enhanced top drive system, a high-pressure mud system and other unique features of the drillship target the drilling of wells up to 40,000 feet of total depth. The rig also has a variable deckload of more than 20,000 metric tons and the capability of drilling in water depths of up to 12,000 feet.

In addition to the Discoverer Inspiration and six newbuild units placed into service in 2009 and 2010, Transocean has three newbuild Ultra-Deepwater Floaters in various stages of construction or preparation for initial contracts which are scheduled to commence operations in 2010 and 2011. Two of those vessels, the Discoverer India and the Discoverer Luanda (the latter owned by a joint venture company with Angco Cayman Limited), are also enhanced Enterprise-class drillships. The other unit is the drillship Deepwater Champion.

FORWARD-LOOKING STATEMENTS

Statements regarding the Discoverer Inspiration, operating specifications, contract durations, revenues, cost, duration, area of operations, as well as any other statements that are not historical facts, are forward-looking statements that involve certain risks, uncertainties and assumptions. These include but are not limited to operating hazards and delays, actions by customers and other third parties, factors affecting the duration of contracts including well-in-progress provisions, the actual amount of downtime, factors resulting in reduced applicable dayrates, the future price of oil and gas and other factors detailed in the company's most recent Form 10-K and other filings with the Securities and Exchange Commission (SEC), which are available free of charge on the SEC's website at www.sec.gov. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those indicated.

Transocean Ltd. is the world's largest offshore drilling contractor and the leading provider of drilling management services worldwide. With a fleet of 140 mobile offshore drilling units plus three announced ultra-deepwater newbuild units, the company's fleet is considered one of the most modern and versatile in the world due to its emphasis on technically demanding segments of the offshore drilling business. The company owns or operates a contract drilling fleet of 46 High-Specification Floaters (Ultra-Deepwater, Deepwater and Harsh-Environment semisubmersibles and drillships), 26 Midwater Floaters, 10 High-Specification Jackups, 55 Standard Jackups and other assets utilized in the support of offshore drilling activities worldwide.

For more information about Transocean, please visit our website at www.deepwater.com.

The Transocean Ltd. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=2252


            
Discoverer Inspiration (a) Discoverer Inspiration (b)

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