公开(公告)号：US20180113230A1

公开(公告)日：2018-04-26

申请号：US15559492

申请日：2015-12-14

Applicant: CGG SERVICES SAS

Inventor： Matthieu GUILLOUET ,  Anne BERTHAUD ,  Thomas BIANCHI

IPC: G01V1/36

CPC classification number: G01V1/368 ,  G01V1/364 ,  G01V2210/127 ,  G01V2210/23 ,  G01V2210/48

Abstract: Seismic data is deblended by performing, for each receiver, a first inversion and a second inversion in a transform domain. The first inversion is formulated to minimize a number of non-zero coefficients of the first inversion result. A sub-domain of the transform domain is defined by vectors of a transform domain basis for which the first inversion has yielded the non-zero coefficients. The second inversion is performed in this sub-domain. The solution of the second inversion is used to extract deblended seismic datasets corresponding to each of the distinct signals, from the seismic data.