Double-acting, deep-well fluid extraction pump

Details Double-acting, deep-well fluid extraction pump Double-acting, deep-well fluid extraction pump

1996-12-12

1998-08-25

Schoeppel, Roger J.

Wells

With eduction pump or plunger

Receptacles

417263, 417264, 417403, E21B 2700

Patent

active

057974527

ABSTRACT:
This invention provides the structure and operation of a double-acting, deep-well fluid extraction pump assembly which includes a power piston housed on top of a pumping piston along with a power control system. The pumping piston has a dynamic, reciprocating, bi-directionally self-cleaning, suction filter and houses poppet-type, uni-directional, fluid flow control valves that control the inflow and outflow of extracted fluid through the pumping piston. Gland membranes and a number of double-acting, lineal, fluid motor pistons divide the power piston into pressure chambers and into fluid conduits, with the divisions conjointly providing a path for inflow of hydraulic power fluid and a path for outflow of extracted fluid. The power control system includes a four-way, directional, flow-control valve for controlling cycling frequency, a timer and a flow switch for controlling recovery periods, an unloading relief valve for controlling fluid pressure and a flow-control valve for controlling pumping speed. When hydraulic power fluid flows from the power control system into the power piston through one conduit, extracted fluid flows from the pumping piston out of the power piston to the power control system from the other conduit.

REFERENCES:
patent: 3922116 (1975-11-01), Pugh
patent: 4214854 (1980-07-01), Roeder
patent: 4293287 (1981-10-01), Carrens
patent: 4295801 (1981-10-01), Bennett
patent: 4403919 (1983-09-01), Stanton et al.
patent: 4477234 (1984-10-01), Roeder
patent: 4516917 (1985-05-01), Canalizo
patent: 4544335 (1985-10-01), Roeder
patent: 4726743 (1988-02-01), Watts
patent: 4768589 (1988-09-01), Roeder
patent: 5494102 (1996-02-01), Schulte

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