Device for receiving sound waves in a well
US4874060A · kind A · utility
10Cited by
18References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1987 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | May 7, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/911
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sound wave receiving device associated with a probe lowered into a well at the end of a cable and applied against the wall of the well by opening anchorage arms. In the part of the probe in contact with the wall of the well there is disposed at least one receiver assembly comprising a sensor case connected by a resilient sheath and a sleeve, movable along a cylinder integral with the body, to the rod of a piston sliding in said cylinder. A hydraulic and/or pneumatic system is provided for placing the case in contact with the wall and increasing the force of application of said case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.