Side wall clamp for downhole tools
US4365668A · kind A · utility
10Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1981 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Mar 11, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A side wall clamp is disclosed for use in conjunction with downhole tools, the clamp having a fail-safe mechanism which permits unclamping of the tool from the bore hole wall even if the clamp actuator means is inoperative, by exerting upward pull on the wire line or drill string to which the tool is attached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.