Downhole tool

Details Downhole tool Downhole tool

2007-01-30

2007-01-30

Neuder, William (Department: 3672)

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

C166S386000

Reexamination Certificate

active

10471982

ABSTRACT:
A hydraulic tool assembly for a downhole tool comprises a body (12), first and second members (14, 16) mounted for independent movement with respect to the body, and first and second control fluid chambers (24, 26) associated with the respective first and second members. Movement of the first member (14) between a first position and a second position in response to an applied force displaces control fluid from the first chamber (24) into the second chamber (26), to move the second member from a first position towards a second position to execute a tool function.

REFERENCES:
patent: 4736798 (1988-04-01), Zunkel
patent: 5101904 (1992-04-01), Gilbert
patent: 6196319 (2001-03-01), Henskens et al.
patent: 6725937 (2004-04-01), McHardy
International Search Report for PCT/GB02/01207 Completed Sep. 5, 2002.

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