Patent · US Active

Full-waveform inversion with elastic mitigation using acoustic anisotropy

US12320937B2 · kind B2 · utility

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0References

18Claims

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Assignee

CGG SERVICES SAS · FR

Inventors

Andrew Ratcliffe · Henfield, GB
Cris Henstock · Oslo, NO
Wenlei Gao · Crawley, GB
Nabil Masmoudi · Crawley, GB

Key dates

Filing date	May 2, 2022
Grant date	Jun 3, 2025
Priority date	—
Expiry date	Nov 12, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG01V2210/65
WIPO fieldMeasurement
WIPO sectorInstruments

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).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.