公开(公告)号：US09891329B2

公开(公告)日：2018-02-13

申请号：US15356844

申请日：2016-11-21

Applicant: CGG SERVICES SAS

Inventor： John Sallas ,  Thierry Ameil ,  Robert Dowle ,  Dominique Thomas

IPC: G01V1/00 ,  G01V1/04 ,  G01V1/155 ,  G01V1/145 ,  G01V1/18 ,  G01V1/135 ,  G01V1/143 ,  G01V1/38

CPC classification number: G01V1/04 ,  G01V1/135 ,  G01V1/143 ,  G01V1/145 ,  G01V1/155 ,  G01V1/188 ,  G01V1/38 ,  G01V2210/1293

Abstract: Method, source array and source element that generate seismic waves. The source element includes an enclosure having an opening covered by a piston; a local supply accumulator fluidly communicating with an interior of the enclosure, a pressure of the fluid inside the local supply accumulator being larger than a pressure of the fluid inside the enclosure; a local supply valve located between the local supply accumulator and the enclosure and configured to control a flow of the fluid from the local supply accumulator to the interior of the enclosure; and a controller configured to control the local supply valve such that the pressure inside the enclosure does not fall below a first preset value based upon an ambient pressure of the enclosure while seismic waves are generated.