Method, system, and device for full-waveform inversion deghosting of marine variable depth streamer data acquisition
US11709286B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2022 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Aug 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method, a system, and a device for full-waveform inversion deghosting for a marine variable depth streamer data acquisition are provided for solving existing problems that deghosted seismic data has low accuracy and is accompanied by artifacts due to a large error in ghost prediction. The provided method includes: acquiring seismic data, jointly solving Lippmann-Schwinger equations to obtain normal derivatives of an incident wave field and a wave field of a receiver surface, performing a wave field extrapolation by a Kirchhoff equation that includes only an integral on the receiver surface to obtain a wave field of a sea surface recorded by a horizontal streamer, calculating a ghost operator, and subjecting the ghosted wave field of the sea surface recorded by the horizontal streamer to full-waveform inversion deghosting to obtain deghosted seismic data. The provided method improves the accuracy and signal-to-noise ratio (SNR) of deghosted seismic data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.