Pumps – With signal – indicator – or inspection means
Patent
1991-04-29
1993-07-06
Bertsch, Richard A.
Pumps
With signal, indicator, or inspection means
417 37, 210104, F04B 2100
Patent
active
052248372
ABSTRACT:
A pump unit for recovery of hydrocarbon liquid from atop water in a well includes a hydrocarbon pump intake with a linear probe for indicating the position of the pump intake relative to the hydrocarbon/water interface on a control panel, so that its relative position can be monitored and changed. The probe has a conductive member coated with a non-conductive coating, and is attached to a source of low frequency electrical signal. The strength of a signal output from the probe indicates the position of the probe, and the pump intake, relative to the hydrocarbon/water interface and controls a display on a control panel. Furthermore, the signal can be used to control the hydrocarbon/water interface relative to the pump intake by such means as pumped water from under the pump intake in a controlled manner to change said interface relative to the intake or by means of a motorized lift to reposition said pump intake relative to the interface.
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patent: 4752188 (1988-06-01), Gurega
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Bowles David F.
Lamphere David A.
Bertsch Richard A.
Clean Earth Technology, Inc.
Freay Charles G.
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