Downhole tool actuating mechanism

Details Downhole tool actuating mechanism Downhole tool actuating mechanism

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 23/01 (2006.01) E21B 23/04 (2006.01)

Patent

CA 2171358

The invention relates to actuation of a downhole tool by hydraulic forces in a structure that does not employ lateral openings through the wall of the tool. By a variety of mechanisms, the tool wall is urged to flex preferably within its elastic limits. The wall flexing either signals a sensor which senses such motion to create a corresponding signal which can unlock a piston. Thereafter, hydraulic pressure differences are employed to move the piston to operate the downhole tool.

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