Downhole isolation valve
US10107075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2016 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Feb 9, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An isolation valve for use with a tubular string includes a tubular housing for connection with the tubular string. A closure member is disposed in the housing and movable between an open position and a closed position. A flow tube is longitudinally movable relative to the housing for opening the closure member. A piston is coupled to the flow tube for moving the flow tube, and a fluid chamber is formed between the flow tube and the housing and receiving the piston. The isolation valve having a first fluid passage for fluid communication between a first portion of the chamber and a control line for moving the piston in a first direction, and a second fluid passage for fluid communication between a second portion of the chamber and a bore of the tubular string for moving the piston in a second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.