Method of seismic surveying, a marine vibrator arrangement, and a method of calculating the depths of seismic sources
US7257049B1 · kind B1 · utility
68Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2000 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Jul 3, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of seismic surveying comprises emitting seismic energy at two or more different depths during a sweep. In one embodiment, the depth of a seismic source is varied during a sweep, by raising or lower the source while it is emitting seismic energy. In another embodiment, an array of two or more marine vibrators is used as the source of seismic energy, with the vibrators in the array being disposed at different depths. The invention allows notch frequencies in the amplitude spectrum to be eliminated, and allows improvements in both the spectral flatness and the amplitude at low frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.