Detachable locking device for a control valve and method

Details Detachable locking device for a control valve and method Detachable locking device for a control valve and method

1998-02-04

2000-08-15

Lee, Kevin

Fluid handling

Processes

13762427, 137 71, 166325, 166331, E03B 100

Patent

active

061020605

ABSTRACT:
A valve device for use downhole is described as comprising a body member and a channel through the body member through which fluid can flow. A moveable member is mounted within the body member, and comprises an obturating member for selectively obturating the channel. The moveable member is moveable between a first position in which the channel is not obturated and fluid flow through the channel is permitted, and a second position in which the channel is obturated and fluid flow through the channel is substantially prevented.
A method of preventing the fluid flow downhole is also described as comprising the steps of inserting a downhole tool comprising a valve device according to the present invention downhole and moving the moveable member from the first to the second position such that the obturating member obturates the channel.

REFERENCES:
patent: 3807428 (1974-04-01), Watkins et al.
patent: 3954138 (1976-05-01), Miffre
patent: 4067358 (1978-01-01), Streich
patent: 4625762 (1986-12-01), Hassanzadeh et al.
patent: 4796704 (1989-01-01), Forrest et al.

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