Multiclient Seismic Data

9 Months Ended

Sep. 30, 2016

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

7.   Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data for the nine months ended September 30, 2016 was as follows:

(Stated in millions)
Balance at December 31, 2015	$	1,026
Capitalized in period		497
Charged to expense		(283	)
Impairment charge (see Note 2)		(198	)
Balance at September 30, 2016	$	1,042