Well flow control system

Details Well flow control system Well flow control system

1990-04-16

1991-05-07

Hepperle, Stephen M.

Wells

Packers or plugs

Controllable passage through packer

137 71, 1374542, 13753315, 166317, 166325, F16K 1504

Patent

active

050128671

ABSTRACT:
A system for controlling flow in a well conduit including a landing nipple in the well conduit and a standing valve, which after landing in the landing nipple may be retrieved or expended from the landing nipple. The standing valve permits upward flow and prevents downward flow through the landing nipple and conduit and has a resilient seal which expands into a groove in the landing nipple to provide limited resistance to upward flow moving the standing valve upwardly out of the landing nipple. Sufficient weight on the standing valve or pumping down the conduit with sufficient pressure releases a landing ring on the standing valve to retract, permitting the standing valve to be moved downwardly and expended out of the landing nipple.

REFERENCES:
patent: 2719768 (1955-10-01), Webber
patent: 2854929 (1958-10-01), McGowen et al.
patent: 3180420 (1965-04-01), Manson et al.
patent: 3250331 (1966-05-01), Boyle
patent: 3473609 (1969-10-01), Allen
patent: 4352366 (1982-10-01), Fisher
patent: 4360063 (1982-11-01), Kilgore

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