Seismic prospecting method and device in wells allowing guided waves filtering
US6332507A · kind A · utility
3Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1994 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Dec 29, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/161
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A VSP or reversed VSP type seismic prospecting method according to the invention allows disturbances contained in seismic recordings produced by tube waves propagating along wells and refracted in zones close to the surface to be minimized. The method disperses a gas under pressure, having preferably a high compressibility, capable of absorbing these tube waves. The gas may be generated by an explosive chemical reaction set off in situ, at a certain depth of the well (which may constitute the seismic wave source). The method has an application for seismic prospecting or drilling noise monitoring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.