Transocean Ltd. to Present at the Bank of America Merrill Lynch Global Energy Conference

Date(s): November 6, 2012 4:15 PM

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ZUG, SWITZERLAND-Transocean Ltd. (NYSE: RIG) (SIX: RIGN) today announced that Steven L. Newman, President and Chief Executive Officer, will address attendees at the Bank of America Merrill Lynch Global Energy Conference in Miami, FL. Mr. Newman is scheduled to present on Tuesday, November 13, 2012, at 9:00 a.m. EST.

A live broadcast of the presentation and a replay will be publicly accessible through the company's website at www.deepwater.com. Go to the "Investor Relations" link and select "News & Events," followed by "Presentations." Participants are encouraged to log onto the site at least 15 minutes before the scheduled presentation to ensure that minimum software requirements are met.

About Transocean

Transocean is a leading international provider of offshore contract drilling services for oil and gas wells. The company specializes in technically demanding sectors of the global offshore drilling business with a particular focus on deepwater and harsh environment drilling services, and believes that it operates one of the most versatile offshore drilling fleets in the world.

Transocean owns or has partial ownership interests in, and operates a fleet of 115 mobile offshore drilling units consisting of 48 High-Specification Floaters (Ultra-Deepwater, Deepwater and Harsh-Environment drilling rigs), 25 Midwater Floaters, nine High-Specification Jackups, 32 Standard Jackups and one swamp barge. Included in the 115 drilling units, the company has 32 Standard Jackups and one swamp barge classified as discontinued operations. In addition, we have six Ultra-Deepwater Drillships and three High-Specification Jackups under construction.

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

Analyst Contacts:  Thad Vayda +1 713-232-7551

Diane Vento +1 713-232-8015

Media Conacts: Guy A. Cantwell +1 713-232-7647