Invention Application
- Patent Title: BIDIRECTIONAL DOWNHOLE ISOLATION VALVE
- Patent Title (中): 双向卧室隔离阀
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Application No.: PCT/US2014044420Application Date: 2014-06-26
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Publication No.: WO2014210367A3Publication Date: 2015-12-10
- Inventor: MCDOWELL CHRISTOPHER L , NOSKE JOE , KING KYLE ALLEN , HARRALL SIMON J
- Applicant: WEATHERFORD LAMB
- Assignee: WEATHERFORD LAMB
- Current Assignee: WEATHERFORD LAMB
- Priority: US201361839447 2013-06-26
- Main IPC: E21B34/10
- IPC: E21B34/10 ; E21B34/14
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.
Information query
