公开(公告)号：US20170160415A1

公开(公告)日：2017-06-08

申请号：US15325565

申请日：2015-07-16

Applicant: CGG SERVICES SAS

Inventor： Richard WINNETT ,  Robert MONTGOMERY ,  Gordon POOLE ,  Jonas ROHNKE ,  Julie SVAY ,  John SALLAS

IPC: G01V1/38 ,  G01V1/20

CPC classification number: G01V1/3808 ,  G01V1/005 ,  G01V1/20

Abstract: During seismic data acquisition the seismic sources and/or seismic receivers are deployed according to an irregular arrangement departing in a predetermined manner from repetitive spatial patterns formed by or within groups of adjacent among the seismic sources or adjacent among the receivers. Additionally or alternatively, source activation moments of the sources within a series of source firing time intervals are determined using Golomb ruler sequences or a non-linear inversion.

公开(公告)号：US20170343688A1

公开(公告)日：2017-11-30

申请号：US15322187

申请日：2015-07-01

Applicant: CGG SERVICES SAS

Inventor： John SALLAS ,  Robert DOWLE

IPC: G01V1/137

CPC classification number: G01V1/137 ,  G01V1/145 ,  G01V1/38 ,  Y02A90/36

Abstract: A method and source element for generating seismic waves in water. The source element includes a housing having an opening; an acoustic piston closing the opening; an actuating mechanism located inside the housing and configured to actuate the acoustic piston; and a decoupling mechanism interposed between the acoustic piston and the actuating mechanism. The decoupling mechanism allows the acoustic piston to move substantially independent of the actuating mechanism for a first frequency range.

公开(公告)号：US20170248710A1

公开(公告)日：2017-08-31

申请号：US15518813

申请日：2015-10-20

Applicant: CGG SERVICES SAS

Inventor： John SALLAS

IPC: G01V1/00 ,  G01V1/38

CPC classification number: G01V1/003 ,  G01V1/005 ,  G01V1/3808 ,  G01V2210/32

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.

公开(公告)号：US20170068005A1

公开(公告)日：2017-03-09

申请号：US15356844

申请日：2016-11-21

Applicant: CGG SERVICES SAS

Inventor： John SALLAS ,  Thierry AMEIL ,  Robert DOWLE ,  Dominique THOMAS

IPC: G01V1/04 ,  G01V1/18 ,  G01V1/155 ,  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.

Abstract translation: 方法，源阵列和源元素，产生地震波。 源元件包括具有被活塞覆盖的开口的外壳; 与外壳内部流体连通的局部供应储液器，局部供应储液器内部的流体的压力大于外壳内流体的压力; 位于本地供给蓄电池和外壳之间并配置成控制流体从本地蓄电池到外壳内部的本地供应阀; 以及控制器，其被配置为控制所述局部供应阀，使得在产生地震波的同时，基于所述外壳的环境压力，所述外壳内的压力不会低于第一预设值。