Apparatus and method for detecting seismic waves in a borehole using multiple clamping detector units
US5212354A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Feb 7, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for detecting seismic waves traveling in an underground formation. The apparatus includes a hydraulic pressure source, preferably a downhole hydraulic pump; a plurality of small, light-weight, flexibly connected clamping detector units having hydraulically actuated clamps; conduit means connecting the hydraulic pressure source to the detector units so that the detector units may be hydraulically clamped to a wellbore with a large force by activation of the clamps; and means for conditioning signals from the detectors. The small, light-weight detector units are securely clamped to the side of the wellbore because of the high clamping force-to-weight ratio thereby allowing high frequency signals to be detected without interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.