Systems, methods, and devices for isolating portions of a wellhead from fluid pressure
US8899315B2 · kind B2 · utility
7Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2009 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellhead system includes a bypass sleeve for temporarily isolating portions of a wellhead assembly from pressurized fracing fluid. The bypass sleeve may include a generally tubular body having a tool interface, a lock ring disposed at least partially around the body, and an anti-rotation device coupled to the body. The anti-rotation device includes a resilient member disposed in a cavity in the body, and an anti-rotation member biased away from the body by the resilient member. The anti-rotation member extends radially outward from the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.