Downhole water flow controller for aquifer storage recovery well

Details Downhole water flow controller for aquifer storage recovery well Downhole water flow controller for aquifer storage recovery well

1987-02-09

1987-09-08

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Fluid operated

137493, 137538, 166321, 166332, E21B 3408

Patent

active

046917780

ABSTRACT:
A downhole flow controller for use in recharge, injection and aquifer storage recovery (ASR) wells to prevent the free cascading of water and thereby eliminate the entrainment of air which may cause plugging of an aquifer wherein the controller includes a fixed tubular member which is selectively mounted to the lower end of a pump column of a well and in which an inner upwardly biased flow regulating tubular member is axially movable so as to automatically adjust the flow through vertically alignable openings through each of the fixed and movable tubular members dependent upon the direction of fluid flow, pressures and operating conditions within the well pump column and aquifer. In some embodiments, an adjustable flow regulating sleeve may be provided exteriorly of the fixed tubular member in order to vary the flow of fluid through the openings therein.

REFERENCES:
patent: 1799373 (1931-04-01), Humason
patent: 3120267 (1964-02-01), Bayless
patent: 4134454 (1979-01-01), Taylor

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