Dump and kill valve for a sidepocket mandrel

Details Dump and kill valve for a sidepocket mandrel Dump and kill valve for a sidepocket mandrel

1986-04-23

1987-03-24

Novosad, Stephen J.

Wells

Means for guiding insertable element laterally of well axis

166317, 166322, 166323, E21B 3410, E21B 2303

Patent

active

046518223

ABSTRACT:
A dump and kill valve for use in a sidepocket having a main bore, a sidepocket in communication with the main bore with ports between the sidepocket and the outside of the mandrel and a shoulder above the pocket. The valve includes a body having a no-go shoulder with an upper first and a lower second seal spaced apart and positioned on the body sealing in the pocket on opposite sides of the port for initially blocking fluid flow. One of the seals is releasably connected to the body and is movable relative to the body upwardly in response to fluid pressure for opening communication between the ports and the main bore. Latch means may be provided between the movable seal and the body for latching the movable seal after opening and the setting tool may include a releasable seal holding shoulder for preventing premature movement of the movable seal.

REFERENCES:
patent: 3086593 (1963-04-01), Chitwood
patent: 3958633 (1976-05-01), Britch et al.
patent: 4039031 (1977-08-01), Crowe
patent: 4066128 (1978-01-01), Davis et al.
patent: 4359094 (1982-11-01), Risinger
patent: 4524831 (1985-06-01), Pringle
patent: 4527631 (1985-07-01), Vazquez

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