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Multiclient Seismic Data
 9 Months Ended
Sep. 30, 2013
Multiclient Seismic Data

7. Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the nine months ended September 30, 2013 was as follows:

 

 

(Stated in millions)

 

Balance at December 31, 2012             

$

  518

 

Capitalized in period             

 

  300

 

Charged to expense             

 

(168

)

Balance at September 30, 2013             

$

  650