Invention Grant
- Patent Title: Three-position fluid valve for downhole use
- Patent Title (中): 用于井下使用的三位置流体阀
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Application No.: US12489974Application Date: 2009-06-23
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Publication No.: US08474485B2Publication Date: 2013-07-02
- Inventor: Kent David Harms , Michael J. Stucker
- Applicant: Kent David Harms , Michael J. Stucker
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Cathy Hewitt; John Vereb
- Main IPC: F16K11/07
- IPC: F16K11/07

Abstract:
Three-position fluid valves for use in downhole environments are disclosed. An example valve includes first, second and third ports, a chamber coupled to the second port, a first sleeve to selectively couple the first port to the chamber and the second port, a second sleeve to selectively couple the third port to the chamber and the second port, and a piston that forms at least part of the chamber and is coupled to the sleeves. The piston moves between a first position in which the piston displaces the first sleeve to couple the first port to the chamber and the second port, a second position in which neither of the first or third ports is coupled to the second port, and a third position in which the piston displaces the second sleeve to couple the third port to the chamber and the second port.
Public/Granted literature
- US20100319779A1 THREE-POSITION FLUID VALVE FOR DOWNHOLE USE Public/Granted day:2010-12-23
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