G - Physics – 01 – F
Patent
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.
Cox Percy Terrell
Gray Charles Louis Jr.
Nussbaum Theodore William
Smart & Biggar
Texaco Development Corporation
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