Downhole tool actuating mechanism

Details Downhole tool actuating mechanism Downhole tool actuating mechanism

1995-03-27

1996-10-01

Tsay, Frank

Wells

Packers or plugs

With expanding anchor

166182, 166207, E21B 2301

Patent

active

055604269

ABSTRACT:
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.

REFERENCES:
patent: 2718926 (1955-09-01), Schlegel
patent: 3776307 (1973-12-01), Young
patent: 3897823 (1975-08-01), Ahlstone
patent: 4397351 (1983-08-01), Harris
patent: 4508167 (1985-04-01), Weinberg et al.
patent: 4730835 (1988-03-01), Wilcox et al.
patent: 4742874 (1988-05-01), Gullion

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