Patent ID: 11860149
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 12:
13. The method of claim 12, further comprising, in response to determining to utilize the direct approach:
calculating a change in pressure from potential energy (ΔpPE) as follows: ΔpPE=pdownstream−pupstream−ΔpF−ΔpKE, wherein pdownstream refers to pressure at a downstream portion of the pipe, wherein pupstream refers to pressure at an upstream portion of the pipe, wherein ΔpF refers to a change in pressure resulting from friction, wherein ΔpKE refers to a change in pressure resulting from kinetic energy; and
estimating water-cut from the following equation: ΔpPE=(1−WC)gohTVD WC gwhTVD, wherein go refers to a gravity of oil, wherein gw refers to a gravity of water, wherein hTVD refers to a total vertical depth difference between measurements,
wherein calculating (ΔpPE) includes utilising a truth model that was created using historic al water-cut data, and
wherein ΔpF is determined from at least one of the following: gross rate, area of the pipe, length in measured depth, WC, fluid properties, Volts, Amps, horsepower, speed, motor temperature, discharge temperature, or number of stages.