Full waveform inversion method for seismic data processing using preserved amplitude reverse time migration
US10670751B2 · kind B2 · utility
5Cited by
5References
18Claims
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Key dates
| Filing date | Mar 25, 2016 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Feb 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/679
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A preserved-amplitude RTM-based FWI method is used to obtain an image of an explored subsurface formation. Model data corresponding to detected data is generated using a velocity model of the formation. Residuals representing differences between the modeled data and the detected data are back-propagated to then update the velocity model a local optimization based on a deconvolution formula employing a backward propagating wavefield and a forward propagating wavefield. Geophysical features of the formation are imaged based on the updated velocity model.
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