Wavefield interpolation and regularization in imaging of multiple reflection energy
US10393901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2016 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Nov 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/57
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems of generating seismic images from primaries and multiples are described. Methods separate pressure data into up-going pressure data and down-going pressure data from pressure data and vertical velocity data. Irregularly spaced receiver coordinates of the down-going and up-going pressure data are regularized to grid points of a migration grid and interpolation is used to fill in down-going and up-going pressure data at grid points of the migration grid. A seismic image is calculated at grid points of the migration grid based on the interpolated and regularized down-going pressure data and the interpolated and regularized up-going pressure data. The seismic images are high-resolution, have lower signal-to-noise ratio than seismic images generated by other methods, and have reduced acquisition artifacts and crosstalk effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.