公开(公告)号：WO2016162724A1

公开(公告)日：2016-10-13

申请号：PCT/IB2015/002445

申请日：2015-12-14

Applicant: CGG SERVICES SA

Inventor： GUILLOUET, Matthieu ,  BERTHAUD, Anne ,  BIANCHI, Thomas

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.

Abstract translation: 对于每个接收机，通过在变换域中执行第一反转和第二反转来解除地震数据。 第一次反演是为了最小化第一反演结果的非零系数的数量。 变换域的子域由第一反演已经产生非零系数的变换域基础的向量来定义。 在该子域中执行第二次反转。 第二次反演的解决方案用于从地震数据中提取对应于每个不同信号的泄露地震数据集。

公开(公告)号：WO2014207148A1

公开(公告)日：2014-12-31

申请号：PCT/EP2014/063600

申请日：2014-06-26

Applicant: CGG SERVICES SA

Inventor： GUILLOUET, Matthieu ,  WINTER, Olivier ,  BIANCHI, Thomas

IPC: G01V1/00 ,  G01V1/37

CPC classification number: G01V1/375 ,  G01V1/005 ,  G01V2210/50

Abstract: Methods and systems for separating seismic data acquired using a plurality of substantially simultaneously fired sources are described. The sources use sweep sequences having low cross correlation levels to generate seismic waves, and their source signatures are determined. Using the source signatures, the wave fields associated with each of the sources are extracted from the seismic data by, for example, performing a time domain deconvolution.

Abstract translation: 描述用于分离使用多个基本上同时燃烧的源获取的地震数据的方法和系统。 源使用具有低互相关水平的扫描序列来产生地震波，并且确定其源特征。 使用源签名，通过例如执行时域反卷积从地震数据中提取与每个源相关联的波场。