公开(公告)号：US10725190B2

公开(公告)日：2020-07-28

申请号：US15318139

申请日：2015-06-29

Applicant: CGG SERVICES SAS

Inventor： Bruno Gratacos ,  Andrew Ratcliffe ,  Gilles Lambare ,  Graham Roberts ,  Lian Duan

IPC: G01V1/36 ,  G01V1/28

Abstract: A method for processing seismic data from a subsurface using least squares migration or wave equation migration velocity analysis over a cost function comprising a function of a matching filter by iteratively updating the reflectivity model velocity model to yield an updated reflectivity model or updated velocity model that matches the observed seismic data.

公开(公告)号：US10976457B2

公开(公告)日：2021-04-13

申请号：US16913385

申请日：2020-06-26

Applicant: CGG SERVICES SAS

Inventor： James Cooper ,  Andrew Ratcliffe ,  Gordon Poole

IPC: G01V1/28 ,  G01V1/30 ,  G01V1/34

Abstract: Methods and apparatuses for seismic exploration of an underground structure obtain improved images by integrating partial match filtering in an FWI. Filtered (auxiliary) data replaces one of the observed data and the synthetic data in the FWI's objective function to avoid cycle skipping.