Annular pressure release sub
US9181777B2 · kind B2 · utility
0Cited by
36References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2012 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Mar 6, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for a pressure relief valve assembly. The valve assembly may be coupled to one or more casings and/or tubular members to control fluid communication therebetween. The valve assembly is a one-way valve assembly that relieves pressure within an annulus formed between adjacent casings and/or tubular members to prevent burst or collapse of the casings and/or tubular members. The valve assembly is resettable downhole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.