Liquid level actuated sleeve valve

Details Liquid level actuated sleeve valve Liquid level actuated sleeve valve

1987-10-06

1988-09-20

Massie, IV, Jerome

Wells

Valves, closures or changeable restrictors

Fluid operated

166321, 166332, 251175, E21B 3408

Patent

active

047718315

ABSTRACT:
A tubing retrievable, hydrostatically operated liquid sleeve valve to control and shut off well production to the well surface of a producing well. The sleeve valve includes a port for supplying production fluid through the well annulus for pumping. When the pump stops, the liquid level in the annulus rises and creates a hydrostatic head against a sleeve piston which is biased to the open position by a gas charge. When the liquid reaches a selected level, the valve will move to a closed position. When the pump is reactivated, the liquid level is lowered and the valve is moved to the open position. Low friction seals minimize friction and a dynamic seal is set after the valve is shifted to the closed position.

REFERENCES:
patent: 4201364 (1980-05-01), Taylor
patent: 4429747 (1984-02-01), Williamson, Jr.
patent: 4434854 (1984-03-01), Vann et al.
patent: 4588030 (1986-05-01), Blizzard
patent: 4721162 (1988-01-01), Pringle et al.

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