公开(公告)号：US20190120990A1

公开(公告)日：2019-04-25

申请号：US15787928

申请日：2017-10-19

Applicant: CGG SERVICES SAS

Inventor： Thomas ELBOTH ,  Vetle VINJE

IPC: G01V1/38

Abstract: System and method for generating discrete dithering sequences DSi for marine seismic sources Si in a marine acquisition system. The method includes determining a number N of the seismic sources Si to be fired; calculating a dithering sequence DSi for each source Si such that when any two consecutive source activation Sk and Sl, where l=k+1, are selected, a combination DSkl of their dithering sequences DSk and DSl is a uniform random low-discrepancy sequence; and driving each source Si with the corresponding dithering sequence DSi to generate blended seismic data.

公开(公告)号：US20180164455A1

公开(公告)日：2018-06-14

申请号：US15817444

申请日：2017-11-20

Applicant: CGG SERVICES SAS

Inventor： Thomas ELBOTH ,  Jamshade KHAN ,  Honglei SHEN ,  Tran Thinh TO

IPC: G01V1/36 ,  G01V1/30

CPC classification number: G01V1/364 ,  G01V1/30 ,  G01V1/36 ,  G01V1/38 ,  G01V2210/3246 ,  G01V2210/3248

Abstract: Computing device, computer instructions and method for removing cross-talk noise from seismic data and generating an image of a surveyed subsurface. The method includes receiving input seismic data D generated by firing one or more seismic sources so that source energy is overlapping, and the input seismic data D is recorded with seismic sensors over the subsurface; generating a cross-talk noise model N by replacing at least one original shot gather with a reconstructed shot gather; subtracting the cross-talk noise model N from the input seismic data D to attenuate coherent cross-talk noise to obtain processed seismic data Dp; deblending the processed seismic data Dp with a deblending algorithm to attenuate a residual noise to obtain deblended seismic data Dd; and generating the image of the subsurface based on the deblended seismic data Dd.

公开(公告)号：US20170276774A1

公开(公告)日：2017-09-28

申请号：US15516557

申请日：2015-10-06

Applicant: CGG SERVICES SAS

Inventor： Yuan NI ,  Honglei SHEN ,  Thomas ELBOTH

IPC: G01S7/52 ,  G10K11/00 ,  G01S15/89 ,  G01S7/487 ,  G01S15/87

CPC classification number: G01S7/52003 ,  G01S7/4876 ,  G01S15/10 ,  G01S15/878 ,  G01S15/8902 ,  G01V1/201 ,  G01V1/208 ,  G01V1/3808 ,  G10K11/008 ,  H04R1/44

Abstract: Systems and methods for boosting low content of received signals involve a vessel (102) towing port side (205) and starboard side (210) impulsive source arrays. The port side and starboard side impulsive source arrays are selectively actuated for a plurality of sequential shots having different signatures.

公开(公告)号：US20170235003A1

公开(公告)日：2017-08-17

申请号：US15413990

申请日：2017-01-24

Applicant: CGG SERVICES SAS

Inventor： Thomas ELBOTH ,  Charlotte SANCHIS ,  Julie SVAY ,  Timothee MOULINIER ,  Risto SILIQI

IPC: G01V1/38

CPC classification number: G01V1/3808 ,  G01V1/003 ,  G01V1/3826 ,  G01V2200/14 ,  H03M7/3062 ,  H03M7/3071

Abstract: A survey plan is designed and potentially adjusted so that seismic data acquired during the survey include inline and cross-line seismic data irregularities suitable for compressive sensing reconstruction. At least one of the inline and cross-line irregularities is dynamic and may be due to source, vessel(s) and/or streamer steering.