Well apparatus

Details Well apparatus Well apparatus

1985-05-20

1986-11-25

Leppink, James A.

Wells

With eduction pump or plunger

With packer or plug

1661055, 166188, 166317, 166321, E21B 4312, E21B 3410

Patent

active

046243100

ABSTRACT:
A well system employs a pump to lift liquid through a primary tubing and subsurface safety valve. The tubing passes through a packer and a vent valve vents gas from the well through the packer. The power transfer means may extend through the vent valve and the vent valve may also control a cross-over in the packer for recirculation of liquid to the pump when the well is shut-in. The vent valve has associated therewith a kill valve permitting pumping of kill fluid into the well. The vent remains closed in the presence of ambient pressure up to a selected value and above this value the kill valve opens thus permitting testing of the packer with annulus pressure below the selected pressure and pump through to kill the well with pressure above the selected pressure.

REFERENCES:
patent: 3448803 (1969-06-01), Sizer
patent: 3638732 (1972-02-01), Huntzinger et al.
patent: 3799268 (1974-03-01), Cochran
patent: 3823778 (1974-07-01), Mott
patent: 3897822 (1975-08-01), Mott
patent: 4044829 (1977-08-01), Jessup et al.
patent: 4441558 (1984-04-01), Welch et al.
patent: 4448254 (1984-05-01), Barrington
patent: 4461353 (1984-07-01), Vinzant et al.
patent: 4502536 (1985-03-01), Setterberg, Jr.

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