公开(公告)号：US10520616B2

公开(公告)日：2019-12-31

申请号：US15388081

申请日：2016-12-22

申请人： CGG SERVICES SAS

发明人： Laurent Ruet ,  Robert Dowle ,  Benoit Teyssandier

IPC分类号： G01V1/06 ,  G01V1/135 ,  G01V1/00 ,  G01V1/38 ,  G01V1/143 ,  G01V13/00 ,  G01V1/133 ,  G10K11/18

摘要： A method for generating acoustic waves under water includes actuating first and second pistons with an actuator system provided inside an enclosure of a source element, to generate a wave having a first frequency, and actuating the first and second pistons with a pressure mechanism attached to the enclosure, to control a pressure of a fluid inside the enclosure such that a pressure of the fluid is substantially equal to an ambient pressure of the enclosure. The enclosure has first and second openings and the first and second pistons are configured to close the first and second openings.

公开(公告)号：US09891329B2

公开(公告)日：2018-02-13

申请号：US15356844

申请日：2016-11-21

申请人： CGG SERVICES SAS

发明人： John Sallas ,  Thierry Ameil ,  Robert Dowle ,  Dominique Thomas

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

CPC分类号： G01V1/04 ,  G01V1/135 ,  G01V1/143 ,  G01V1/145 ,  G01V1/155 ,  G01V1/188 ,  G01V1/38 ,  G01V2210/1293

摘要： 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.