Casing joint assembly for producing an annulus gas cap
US9470067B2 · kind B2 · utility
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4References
5Claims
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Key dates
| Filing date | Aug 8, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Aug 8, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- 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.