In-well pump skimmer

Details In-well pump skimmer In-well pump skimmer

1986-09-15

1988-05-24

Fisher, Richard V.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Diverse sensing means

210117, 210121, 210136, 210923, 417 36, 166 53, 166265, 166325, E21B 4338, E02B 1504

Patent

active

047464232

ABSTRACT:
A two pump skimmer system for recovery of lighter-than-water hydrocarbons from water wells. A water pump is used to depress the water table and a contaminant pump is used to remove the hydrocarbons. The pumps are located in individual chambers which are interconnected, with the water chamber below the hydrocarbon chamber and with limited one-way flow into the water chamber. Both pumps are independently controlled by sensors in the upper chamber to assure that each pumps only the proper liquid.

REFERENCES:
patent: 3901811 (1975-08-01), Finch
patent: 3915225 (1975-10-01), Swink
patent: 4187912 (1980-02-01), Cramer
patent: 4273650 (1981-06-01), Solomon
patent: 4431534 (1984-02-01), Gordon
patent: 4466777 (1984-08-01), Kimberlin
patent: 4469170 (1984-09-01), Farmer
patent: 4527633 (1985-07-01), McLaughlin et al.
patent: 4625807 (1986-12-01), Harlon

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