Apparatus for controlling the removal of liquid hydrocarbons from groundwater
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United States of America Patent
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Aug 2, 1988
Grant Date -
N/A
app pub date -
Aug 18, 1986
filing date -
Aug 18, 1986
priority date (Note) -
Expired
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Abstract
An apparatus for controlling the removal of liquid hydrocarbons from ground water in perforated well casings consists of a plurality of pump chambers and a control system which is powered by compressed air. The pump chambers are positioned above a liquid hydrocarbon recovery device which is positioned in the well casing at the oil/water interface. The pump chambers are evacuated, causing the ground water and the liquid hydrocarbons to be drawn into separate chambers through respective check valves. The pump chambers are then pressurized with air to push out the water and liquid hydrocarbons through check valves in the chamber discharge conduits, thereby removing the fluids from the well casing.
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