Typing picks to horizons in migration velocity analysis
US6687618B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Aug 7, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/303
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A seismic velocity analysis method includes tying velocity parameter values such as residual velocity values to geological horizons (reflectors) within a seismic exploration volume. Common image gathers (CIGs) such a common reflection point (CRP) gathers or angle-domain common image gathers (ACIGs) are generated for a set of CIG grid points. Computed best-fit residual velocity values are then snapped to a neighboring horizon or vertically interpolated to the horizon, to generate residual velocity values along the horizon. The residual velocity values for points along the horizon are then selectively employed in updating the velocity model for the volume of interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.