Method for calibrating seismic imaging velocities
US8594939B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2010 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Jun 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for adjusting an isotropic depth image based on a mis-tie volume is provided. The method generally includes obtaining an isotropic velocity volume for a geophysical volume, obtaining an isotropic depth image of the geophysical volume, obtaining time-depth pairs at downhole locations in the geophysical volume, generating mis-tie values based on the time-depth pairs and the isotropic velocity volume, assigning uncertainties to the mis-tie values, generating a smoothest mis-tie volume that satisfies a target goodness of fit with the mis-tie values. Adjustment of the isotropic depth image may be achieved based on the mis-tie volume or a calibration velocity obtained from the mis-tie volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.