Systems, methods, and devices for isolating portions of a wellhead from fluid pressure
US9376883B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2013 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | May 4, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellhead system is provided. In one embodiment, the 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. In some embodiments, 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 of some embodiments extends radially outward from the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.