Methods and apparatus for applying torque and rotation to connections
US7594540B2 · kind B2 · utility
10Cited by
23References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for connecting threaded members while ensuring that a proper connection is made. In one embodiment, the applied torque and/or rotation are measured at regular intervals throughout a pipe connection makeup. When a shoulder contact is detected, a predetermined torque value and/or rotation value is added to the measured torque and/or rotation values, respectively, at shoulder contact and rotation continued until this calculated value(s) is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.