Down hole well tool with pressure relief chamber

Details Down hole well tool with pressure relief chamber Down hole well tool with pressure relief chamber

1992-07-16

1993-11-09

Dang, Hoang C.

Wells

Receptacles

With separate air chamber having openable passage

166154, 166318, 166324, 166332, E21B 3414

Patent

active

052594513

ABSTRACT:
A down hole well tool for use in operating another well tool against the resistance of incompressible well bore fluid. The down hole tool includes a pressure chamber that communicates through an adjustable pressure relief valve with the well bore fluids beneath the tool, so that when the pressure of said fluids exceeds the relief valve setting the valve opens and allows said fluids to pass into the chamber, thereby lowering the fluid pressure beneath the tool and facilitating its downward movement to actuate the other well tool.

REFERENCES:
patent: 3273649 (1966-09-01), Tamplen
patent: 3552718 (1971-01-01), Schwegman
patent: 3581819 (1971-06-01), Tamplen
patent: 4278131 (1981-07-01), Jani
patent: 4645006 (1987-02-01), Tinsley
patent: 4760884 (1988-08-01), Haugen et al.
patent: 5062481 (1991-11-01), Gullett
patent: 5183114 (1993-02-01), Mashaw, Jr. et al.

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