Liquid purification or separation – Flow – fluid pressure or material level – responsive – Diverse sensing means
Patent
1988-03-22
1989-07-04
Hart, Charles
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Diverse sensing means
166105, 210115, 210117, 210138, 2102423, 417 12, E21B 4338
Patent
active
048447978
ABSTRACT:
There is disclosed a vacuum extraction system in which one or more vacuum extraction vessels are suspended in one or more well bores and each is connected to a vacuum pump. In one embodiment, each extraction vessel has a vessel chamber, a top inlet port with an adjustable metering valve, a vent pipe, a liquid level sensor in the vessel chamber, and an outlet port connected to the vacuum pump through a controller. The controller responds to the level of liquid in the vessel chamber to connect and disconnect each of the outlet ports of each of the extraction vessels to and from the vacuum pump. The controller also activates and deactivates the vacuum pump. In another embodiment, the extraction vessel is suspended for reciprocation in the well bore in order to skim liquid hydrocarbons floating on the ground water. In another embodiment, the extraction vessel has a differentiation valve in its bottom which releases water, but not liquid hydrocarbons, when the extraction vessel is lifted free of the liquid in the well.
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Hart Charles
S&ME, Incorporated
Telfer G. H.
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