Transocean Ltd. Provides Fleet Update Summary

Transocean Ltd. Provides Fleet Update Summary 
ZUG, SWITZERLAND -- (Marketwire) -- 12/17/12 --  Transocean Ltd.
(NYSE: RIG) (SIX: RIGN) today issued a monthly fleet update summary
which includes new contracts, significant changes to existing
contracts, and changes in estimated planned out of service time of 15
or more days associated with continuing operations since November 18,
2012. The value of new contracts or extensions since the November 18,
2012 fleet update summary is approximately $119 million. 
Estimated 2012 out of service time increased by a net 40 days,
including 22 days to complete repairs on the Henry Goodrich and 19
days to complete work scope on the GSF Explorer. Estimated 2013 out
of service time decreased by a net 17 days. 
Other highlights are as follows: 

--  Discoverer Seven Seas - Awarded a three-well contract for work
    offshore Indonesia at a dayrate of $500,000 ($90 million contract
    backlog). The rig's prior dayrate was $490,000.
--  GSF Magellan - Customer exercised a six-month option for work offshore
    Nigeria at a dayrate of $160,000 ($29 million contract backlog). The
    rig's prior dayrate was $143,000.
--  On November 30, 2012, the company completed the sale of 37 standard
    jackups and one swamp barge to Shelf Drilling and will no longer
    include the rigs in the monthly fleet updates.

The report can be accessed at by clicking on the
Fleet Status Report link found in the toolbar. 
Forward-Looking Statements 
Statements regarding the estimated duration of customer contracts,
contract dayrate amounts, future contract commencement dates and
locations, planned shipyard projects and other out of service time,
sales of drilling units, as well as any other statements that are not
historical facts in the report, are forward-looking statements that
involve certain risks, uncertainties and assumptions. These include
but are not limited to operating hazards and delays, risks associated
with international operations, actions by customers and other third
parties, the future prices 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. Should one or more of these risks
or uncertainties materialize, or shoul
d underlying assumptions prove
incorrect, actual results may vary materially from those indicated. 
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, 82 mobile offshore drilling units consisting of 48
High-Specification Floaters (Ultra-Deepwater, Deepwater and
Harsh-Environment drilling rigs), 25 Midwater Floaters and nine
High-Specification Jackups. In addition, we have six Ultra-Deepwater
Drillships and three High-Specification Jackups under construction. 
For more information about Transocean, please visit the website 
Analyst Contacts:
Thad Vayda
+1 713-232-7551  
Diane Vento
+1 713-232-8015 
Media Contact:
Guy A. Cantwell
+1 713-232-7647 
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