Seismic wave generation by a downhole source
US4722417A · kind A · utility
20Cited by
13References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Jun 13, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/912
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for downhole source generation of seismic waves of adjustable frequency by isolating a volume of liquid in a bore hole and cyclically varying the volume by a hydraulically operated transforming piston which varies the pressure of the volume thereby displacing the surrounding strata to generate waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.