System for measuring the torque applied to a threaded connection between sections of oilfield pipe
US5509316A · kind A · utility
14Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/166
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A system for accurately determining the torque applied to threadable pipe members, such as casing, to be threaded together, comprising a torque wrench having a first end secured to one of the pipe members, and a second end forming an extendable handle portion, a cable secured to the handle portion for pulling in the direction to impart rotational force on the pipe members to complete the connection, and a plurality of wire strain gages embedded in the wall of a pin member inserted adjacent the distal end of the wrench for recording the torque applied to the pipe member by the torque wrench and the cable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.