Pressure apportioning valve apparatus for use with multiple pack

Details Pressure apportioning valve apparatus for use with multiple pack Pressure apportioning valve apparatus for use with multiple pack

1976-12-15

1978-01-24

Leppink, James A.

Wells

Packers or plugs

With controllable passage between central chamber and space...

166319, E21B 3313, E21B 4300

Patent

active

040698661

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a valve apparatus adapted for use in drill stem testing to apportion a pressure differential across two vertically spaced packers includes a housing mounted between the packers and having a flow passage leading from the exterior to the interior thereof, a first valve means including a spring-loaded mandrel arranged to close the passage at a preselected difference in pressures inside and outside the housing, and a second valve means that also can close the passage after a measured quantity of fluids has flowed through the passage.

REFERENCES:
patent: 2458631 (1949-01-01), Parks
patent: 2864449 (1958-12-01), Tausch
patent: 3291219 (1966-12-01), Nutter

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