System and method for reconstructed wavefield imaging
US10816685B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 19, 2017 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Jan 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/679
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Computer systems and methods are provided for time domain reconstructed seismic wavefield imaging. The original source signal or extended source can be forward propagated based on a model of a subsurface region, in order to generate a residual by comparison to field data. The residual can be back-propagated to generate a reconstructed source signal, which can be forward propagated to generate a reconstructed source wavefield. Seismic images can be generated by cross correlating the forward-propagated reconstructed source wavefield and the back-propagated receiver wavefield. The model can include seismic parameters such as velocity, density, anisotropy and attenuation characterizing the subsurface region, and can be iteratively refined to improve image quality, based on the reconstructed source wavefield in comparison to the field data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.