The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2025
Filed:
May. 02, 2022
Applicant:
Cgg Services Sas, Massy, FR;
Inventors:
Andrew Ratcliffe, Henfield, GB;
Cris Henstock, Oslo, NO;
Wenlei Gao, Crawley, GB;
Nabil Masmoudi, Crawley, GB;
Assignee:
CGG SERVICES SAS, Massy, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/30 (2006.01); G01V 1/28 (2006.01);
U.S. Cl.
CPC ...
G01V 1/30 (2013.01); G01V 1/282 (2013.01); G01V 2210/65 (2013.01);
Abstract
Seismic data is processed using a full-waveform inversion using a model with a pseudo-δ layer. The presence of the pseudo-δ layer in the model enables handing the difference at the water bottom between acoustically generated synthetic data and seismic data that corresponds to an elastic medium. The pseudo-δ layer may be less than 100 m thick and/or may be located directly underneath the water bottom. The pseudo-δ layer may have a negative value for S and a null value for ϵ (δ and ϵ being Thomsen's anisotropy parameters).