Multistage full wavefield inversion process that generates a multiple free data set
US10670750B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2015 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Nov 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/67
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-stage FWI workflow uses multiple-contaminated FWI models to predict surface-related multiples. A method embodying the present technological advancement, can include: using data with free surface multiples as input into FWI; generating a subsurface model by performing FWI with the free-surface boundary condition imposed on top of the subsurface model; using inverted model from FWI to predict multiples; removing predicted multiples from the measured data; using the multiple-free data as input into FWI with absorbing boundary conditions imposed on top of the subsurface model; and preparing a multiple free data set for use in conventional seismic data processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.