Installable load shoulder for a wellhead
US8297366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Feb 11, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for supporting tubing with an installable load shoulder. The system includes a wellhead formed with an enlarged first circumferential groove in the wall of the vertical bore of the wellhead, and a second circumferential groove extending upwardly or downwardly from the first circumferential groove. At least one opening is formed in communication with the second circumferential groove. An annular load shoulder is received within the first circumferential groove, and has an inner surface adapted to support a tubing hanger. The load shoulder is formed from at least three arc-shaped shoulder segments adapted to be received within the first circumferential groove. At least one of the shoulder segments has an engagement member configured to pass through the opening to be received within the second circumferential groove. Rotating the load shoulder such that the engagement member is out of alignment with the opening secures the load shoulder within the wellhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.