Direct time lapse inversion of seismic data
US7636275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2007 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Jan 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/612
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system of seismic data processing includes acquiring first and second prestack seismic datasets wherein the seismic datasets have a time-lapse relationship. The first prestack seismic dataset is inverted to determine a first source wavelet data set and a first reflectivity parameters data set. A perturbation data set is obtained by simultaneously minimizing an Lp-Norm between a portion of the first reflectivity parameters data set and reflectivity parameters for the second data set, an Lp-Norm between the first source wavelet data set and a source wavelet for the second data set and an Lp-Norm for data misfit between the first prestack seismic data set and the second prestack seismic data set. The perturbation dataset may be inverted for petrophysical parameters and for determining time-lapse changes in a reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.