Schlumberger 2012 Annual Report - page 65

5. Inventory
A summary of inventory follows:
(Stated in millions)
As at December 31,
2012 2011
Raw materials & field materials
$2,519
$2,066
Work in process
349
364
Finished goods
1,917
2,270
$4,785
$4,700
6. Fixed Assets
A summary of fixed assets follows:
(Stated in millions)
As at December 31,
2012 2011
Land
$ 366
$ 362
Buildings & improvements
3,209
2,912
Machinery & equipment
27,690
24,404
Seismic vessels
1,903
1,873
33,168
29,551
Less accumulated depreciation
18,388
16,558
$14,780
$12,993
The estimated useful lives of Buildings & improvements are primarily 30 to 40 years. The estimated useful lives of
Machinery & equipment are primarily 5 to 10 years. Seismic vessels are depreciated over periods ranging from 20 to 30
years.
Depreciation expense relating to fixed assets was $2.9 billion, $2.7 billion and $2.4 billion in 2012, 2011 and 2010,
respectively.
7. Multiclient Seismic Data
The change in the carrying amount of multiclient seismic data is as follows:
(Stated in millions)
2012 2011
Balance at beginning of year
$ 425
$ 394
Capitalized in year
351
289
Charged to expense
(258)
(258)
$ 518
$ 425
8. Goodwill
The changes in the carrying amount of goodwill by reporting unit were as follows:
(Stated in millions)
Reservoir
Characterization Drilling Production Distribution Total
Balance at January 1, 2011
$3,381 $8,150
$2,351
$ 70 $13,952
Adjustments relating to Smith acquisition
175
13
6
194
Other acquisitions
42
45
87
Divestiture of business
(51)
(51)
Impact of changes in exchange rates
(12)
(8)
(8)
(28)
Balance, December 31, 2011
3,360
8,362
2,356
76 14,154
Acquisitions
391
93
484
Reallocation
(125)
125
Divestiture of business
(76)
(76)
Impact of changes in exchange rates
9
7
7
23
Balance, December 31, 2012
$3,760 $8,337
$2,488
$ – $14,585
47
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