Title:
BIDIRECTIONAL DOWNHOLE ISOLATION VALVE
Document Type and Number:
WIPO Patent Application WO/2014/113280
Kind Code:
A3
Abstract:
An isolation valve for use in a wellbore includes: a housing; a piston longitudinally movable relative to the housing; a flapper carried by the piston for operation between an open position and a closed position, the flapper operable to isolate an upper portion of a bore of the valve from a lower portion of the bore in the closed position; an opener connected to the housing for opening the flapper; and an abutment configured to receive the flapper in the closed position, thereby retaining the flapper in the closed position.
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Inventors:
NOSKE JOE (US)
Application Number:
PCT/US2014/010975
Publication Date:
April 09, 2015
Filing Date:
January 10, 2014
Export Citation:
Assignee:
WEATHERFORD TECHNOLOGY HOLDINGS LLC (US)
International Classes:
E21B34/10
Domestic Patent References:
| WO2011110816A2 | 2011-09-15 |
Foreign References:
| US20070095546A1 | 2007-05-03 |
Attorney, Agent or Firm:
PATTERSON, William B. et al. (LLP24 Greenway Plaza, Suite 160, Houston TX, US)
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