Seismic processing methods
US6639871B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Apr 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/286
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of processing seismic traces corresponding to two modes of propagation in the subsoil, the method being characterized by the following steps:determining at least one pair of correlated events from the seismic traces corresponding to the two modes respectively;determining the ratio of the differences between the vertical travel times Ts and Tp in the S domain and in the P domain, corresponding to said correlated pairs of events; anddetermining the values of Ts and Tp over the time interval defined by the two pairs of correlated events so that throughout said time interval, the ratio rt=Ts/Tp is equal to the ratio Vp/Vs of the speeds in the P domain and in the S domain, and so that the mean value of said ratio r over said time interval corresponds to the ratio of the differences between the vertical travel times corresponding to the pairs of correlated events.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.