Oilfield tubular connection with increased compression capacity
US7780202B2 · kind B2 · utility
6Cited by
4References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2007 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Mar 23, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0423
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A threaded oilfield tubular connection 10 includes a pin member 12 having a first external tapered thread 24 and a second external tapered thread 26. A box member includes a first internal tapered thread 14 and a second internal tapered thread 16. Helical torque shoulders 40, 42 are provided on the pin member and the box member, and an axially spaced between the respective first and second threads. The helix of each torque shoulder includes a plurality of revolutions with compression flanks on both the pin member and the box member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.