公开(公告)号：US20220326404A1

公开(公告)日：2022-10-13

申请号：US17705997

申请日：2022-03-28

Applicant: CGG SERVICES SAS

Inventor： Gordon POOLE ,  Ross HAACKE

IPC: G01V1/32

Abstract: Methods and seismic data processing apparatuses use a down-going annihilation operator to generate an image from seismic data acquired over a water-covered subsurface formation. The down-going annihilation operator is derived using a down-going wavefield and an estimated water-wave extracted from the seismic data. The down-going annihilation operator may be derived in plane-wave domain.

公开(公告)号：US20170371055A1

公开(公告)日：2017-12-28

申请号：US15535159

申请日：2015-12-18

Applicant: CGG SERVICES SAS

Inventor： Gordon POOLE ,  Can PENG

IPC: G01V1/37 ,  G01V1/36

CPC classification number: G01V1/375 ,  G01V1/366 ,  G01V1/368 ,  G01V2210/1214 ,  G01V2210/24 ,  G01V2210/3246 ,  G01V2210/614

Abstract: Methods for processing seismic data acquired with non-impulsive moving sources are provided. Some methods remove cross-talk noise from the seismic data using emitted signal data and an underground formation's response estimate, which may be iteratively enhanced. Some methods perform resampling before a spatial or a spatio-temporal inversion. Some methods compensate for source's motion during the inversion, and/or are usable for multiple independently moving sources.