Top drive output torque measurement method
US8651175B2 · kind B2 · utility
32Cited by
4References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2011 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Feb 29, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/166
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A top drive assembly that includes a gauge for measuring strain in a linkage coupling the top drive to a drilling rig frame. The strain measuring gauge, which can be a strain gauge, is disposed on a pin that pivotingly links members of the linkage coupling. When a motor in the top drive assembly operates to rotate an associated pipe string, the torque generated by the motor can be estimated by monitoring strain measured in the pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.