Casing joint assembly for producing an annulus gas cap
US9556705B2 · kind B2 · utility
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1References
11Claims
0Family size
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Key dates
| Filing date | Sep 30, 2014 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Sep 30, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A casing joint assembly and methods for producing an annulus gas cap using the casing joint assembly. The casing joint assembly comprises a first valve and a second valve to control fluid pressure in the sealed annulus between the casing string and a wall of the well bore or another casing string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.