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.

公开(公告)号：US10261202B2

公开(公告)日：2019-04-16

申请号：US15518813

申请日：2015-10-20

Applicant: CGG SERVICES SAS

Inventor： John Sallas

IPC: G01V1/00 ,  G01V1/38

Abstract: A computing system and method for mitigating, in a first seismic survey, cross-talk generated by a second seismic survey. The method includes performing the first seismic survey with a first survey seismic source driven by a first survey pilot sweep, performing the second seismic survey with a second survey seismic source, simultaneously with the first seismic survey, recording with first survey seismic sensors (i) first survey seismic signals that originate from the first survey seismic source and (ii) second survey seismic signals that originate from the second survey seismic source, selecting another first survey pilot sweep, which has less cross-correlation noise with the second survey seismic signals than the first survey pilot sweep, and continuing the first seismic survey with the another first survey pilot sweep.