Transocean Proxy Statement and 2010 Annual Report

Fleet average daily revenue—The following table presents the average daily revenue for our contract drilling services segment
for each of the quarters ended December 31, 2010, September 30, 2010 and December 31, 2009.
Average daily revenue (a) (b)
High-Specification Floaters
AR-43
December 31,
2010
Three months ended
September 30,
2010
December 31,
2009
Ultra-Deepwater Floaters $ 435,900 $ 422,800 $ 486,200
Deepwater Floaters $ 395,600 $ 365,600 $ 346,600
Harsh Environment Floaters $ 366,800 $ 414,100 $ 405,800
Total High-Specification Floaters $ 414,500 $ 403,900 $ 425,900
Midwater Floaters $ 298,500 $ 328,400 $ 325,100
High-Specification Jackups $ 162,600 $ 138,100 $ 175,100
Standard Jackups $ 110,600 $ 113,200 $ 147,300
Other Rigs $ 73,000 $ 72,900 $ 72,300
Total fleet average daily revenue $ 276,600 $ 271,200 $ 295,700
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(a) Average daily revenue is defined as contract drilling revenue earned per revenue earning day. A revenue earning day is defined as a day for which
a rig earns dayrate after commencement of operations. Stacking rigs, such as Midwater Floaters, High-Specification Jackups and Standard
Jackups, has the effect of increasing the average daily revenue since these rig types are typically contracted at lower dayrates compared to the
High-Specification Floaters. Average daily revenue includes our rigs that are operating on standby rates in the U.S. Gulf of Mexico.
(b) Calculation excludes results for Joides Resolution, a drillship engaged in scientific geological coring activities that is owned by an unconsolidated
joint venture in which we have a 50 percent interest and for which we apply the equity method of accounting.
Utilization—The following table presents the utilization for our contract drilling services segment for each of the quarters ended
December 31, 2010, September 30, 2010 and December 31, 2009.
December 31,
Three months ended
September 30, December 31,
2010
2010
2009
Utilization (a) (b)
High-Specification Floaters
Ultra-Deepwater Floaters 76% 77% 91%
Deepwater Floaters 58% 65% 88%
Harsh Environment Floaters 92% 93% 83%
Total High-Specification Floaters 71% 75% 89%
Midwater Floaters 68% 73% 69%
High-Specification Jackups 38% 61% 53%
Standard Jackups 46% 52% 57%
Other Rigs 48% 50% 50%
Total fleet average utilization
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58% 64% 69%
(a) Utilization is the total actual number of revenue earning days as a percentage of the total number of calendar days in the period. Idle and stacked
rigs are included in the calculation and reduce the utilization rate to the extent these rigs are not earning revenues. Newbuilds are included in the
calculation upon acceptance by the customer.
(b) Calculation excludes results for Joides Resolution, a drillship engaged in scientific geological coring activities that is owned by an unconsolidated
joint venture in which we have a 50 percent interest and for which we apply the equity method of accounting.