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/US2014/044420Application Date: 2014-06-26
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Publication No.: WO2014210367A2Publication Date: 2014-12-31
- Inventor: MCDOWELL, Christopher L. , NOSKE, Joe , KING, Kyle Allen , HARRALL, Simon J.
- Applicant: WEATHERFORD/LAMB, INC.
- Applicant Address: 2000 St. James Place Houston, Texas 77056 US
- Assignee: WEATHERFORD/LAMB, INC.
- Current Assignee: WEATHERFORD/LAMB, INC.
- Current Assignee Address: 2000 St. James Place Houston, Texas 77056 US
- Agency: PATTERSON, William B. et al.
- Priority: US61/839,447 20130626
- Main IPC: E21B34/10
- IPC: E21B34/10
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
