Bidirectional downhole isolation valve
US10132137B2 · kind B2 · utility
6Cited by
14References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2014 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Feb 26, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An isolation valve for use in a wellbore includes: a tubular housing; an upper flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; an upper piston operable to open or close the upper flapper; a lower flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; a lower piston operable to open the lower flapper; an opener passage in fluid communication with the pistons and an opener hydraulic coupling; and a closer passage in fluid communication with the pistons and a closer hydraulic coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.