Backup tool and method for preventing rotation of a drill string
US5785132A · kind A · utility
83Cited by
26References
3Claims
0Family size
Inventors
Key dates
| Filing date | Feb 29, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Feb 29, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/161
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A backup tool for engaging a drill pipe body having elongated jaws such that the pressure exerted by the jaws on the drill pipe body is sufficiently distributed to not damage the drill pipe body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.