Systems and methods to correct seismic data for undesired effects caused by near surface velocity variations by correcting for long-wavelength statics
US11397271B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 4, 2021 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | May 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/6222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods are provided to correct seismic data for the undesired effects caused by near surface velocity variations. In one embodiment, a method includes receiving travel time data for a near surface region and estimating an initial velocity model for the near surface region using the travel time data. The method can include updating the velocity model by performing an inversion iteration of including inversion of travel times to estimate slowness. The process can also include calculating at least one long-wavelength static for the near surface region. The long-wavelength statics may be used to correct for undesired effects caused by near surface velocity variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.