Velocity operated standing valve

Details Velocity operated standing valve Velocity operated standing valve

1980-02-05

1982-10-05

Weakley, Harold W.

Fluid handling

Destructible or deformable element controlled

Destructible element

137464, 1375962, 251 634, 166 37, 166321, F16K 1304

Patent

active

043523668

ABSTRACT:
A standing valve for controlling fluid flow through a well flow conductor. The standing valve allows formation fluids to enter the flow conductor downhole and to flow in one directin to the well surface. The standing valve functions as a check valve to prevent fluids injected into the flow conductor at the well surface from flowing out the other end of the well flow conductor. The standing valve is operated by changes in the velocity of fluids flowing through the valve. When the pressure of fluid injected into the flow conductor from the well surface exceeds a preselected value, an alternative flow path is opened within the standing valve to allow the injected fluid to flow in the other direction through the valve.

REFERENCES:
patent: 2124359 (1938-07-01), Weisgerber
patent: 2330267 (1943-09-01), Burt
patent: 2999513 (1961-09-01), Oetiker
patent: 3721264 (1973-03-01), Coughlin
patent: 4121483 (1978-10-01), Sedlock

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