Water-cut monitoring means and method

Details Water-cut monitoring means and method Water-cut monitoring means and method

G - Physics

01

F

354/30

G01F 9/00 (2006.01) E21B 49/08 (2006.01)

Patent

CA 2020529

WATER-CUT MONITORING MEANS AND METHOD (D#79,154-F) ABSTRACT OF THE DISCLOSURE Oil well production is often measured by using a settling tank, pump, flowmeter and a water-cut meter. Fluid from a well being tested is allowed to accumulate in the settling tank and, after a predetermined settling time, is pumped through the flowmeter and water-cut meter for gauging. The present invention is an improved water-cut meter which first determines the impedance of the free water pumped from the tank and later determines the impedance of the oil/water emulsion emerging from the tank. The ratio of the emulsion impedance to the free water impedance is proportional to percent water-cut of the fluid during the water-continuous phase. When the emulsion switches to oil-continuous phase, the system utilizes probe impedance for the water cut determination. Using standard techniques, the water-cut and flow rate signals are then combined to calculate the total oil and water content of the settling tank fluid.

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