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Multiclient Seismic Data
9 Months Ended
Sep. 30, 2019
Multiclient Seismic Data [Abstract]  
Multiclient Seismic Data

6.   Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the nine months ended September 30, 2019 was as follows:

 

(Stated in millions)

 

 

 

 

 

Balance at December 31, 2018

$

601

 

Capitalized in period

 

181

 

Charged to expense

 

(189

)

Balance at September 30, 2019

$

593