Seismic vibratory acquisition method and apparatus
US7330401B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2005 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Apr 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and related apparatus are described for generating acoustic signals for use in a vibratory seismic survey, including the step of combining into a drive signal a high frequency sweep signal, which sweeps upwardly through a high frequency band during a first time interval, and a low frequency sweep signal which is of lower amplitude than the high frequency sweep signal and which sweeps upwardly through a low frequency band during a second time interval, wherein the second time interval starts during the first time interval but after the beginning thereof; and applying the drive signal to a mechanical drive system for a vibratable element. The method improves the utilization of a single vibratory source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.