Device for generating acoustic pulses by implosion, inside a well
US4682309A · kind A · utility
4Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1984 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Nov 28, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/135
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for generating acoustic pulses by driving suddenly into a body lowered in a well a piston having a face in contact with the liquid contained in the well and adapted for sliding inside said body. The device comprises a valve securely fixed to the piston, a second piston and a hydraulic system disposed completely in the body and comprising principally a pump, electro-valves, an equalizing cylinder, a low pressure reservoir and supply circuits, for moving the valve and the piston to a set position and for immobilizing it intermittently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.