Oil well standing valve

Details Oil well standing valve Oil well standing valve

1984-02-16

1985-05-28

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Destructible element

166332, E21B 3414

Patent

active

045194572

ABSTRACT:
A standing valve which may be retrievably mounted in a well production tubing and will allow the maximum possible fluid flow and also allow the valve to be easily drained and retrieved through the well production tubing. The seal between the standing valve and the bottom hole assembly is located at or below the level of the seat and fluid from the top of the valve into the well is drained through the seat.

REFERENCES:
patent: 1644998 (1927-10-01), Gunn et al.
patent: 1956112 (1934-04-01), Willoughby
patent: 2131299 (1938-09-01), Reagin
patent: 2604169 (1952-07-01), Miller
patent: 2752861 (1956-07-01), Hill
patent: 2854929 (1958-10-01), McGowen, Jr. et al.
patent: 2885006 (1959-05-01), Long et al.
patent: 2994280 (1961-08-01), Daffin
patent: 3954138 (1976-05-01), Miffre
patent: 4237980 (1980-12-01), Robinson
patent: 4364407 (1982-12-01), Hilliard

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