Method and apparatus for positioning a wellhead member including an overpull indicator
US8689888B2 · kind B2 · utility
0Cited by
25References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2010 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Jun 18, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An outer wellhead member has a bore with a first profile portion and an annular recess. A tubular inner wellhead member with a centralizer/overpull ring is lowered into the outer wellhead member. The centralizer/overpull ring is biased to expand outward to engage the bore of the outer wellhead member to center the inner wellhead member within the bore as the inner wellhead member is lowered through the bore. The recess of the outer wellhead member is adapted to receive the centralizer/overpull ring and oppose axial movement of the centralizer/overpull ring to enable an upward test pull of the inner wellhead member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.