Real-time Monitoring System of Leakage Current for Electric Submersible Pump

Abstract

With the increasing exploitation of marine gas, electric submersible pump technology has attracted more and more attention. Under the influence of the bad underground environment, the insulation performance of the electric submersible pump will gradually deteriorate during its operation, resulting in current leakage, causing phase-to-phase open circuit, fire or electric leakage to ground and other dangerous phenomena, which brings destructive damage to the electric submersible pump equipment. In order to solve this problem, this paper designs a real-time monitoring system of the leakage current for the electric submersible pump based on the principle of current mutual inductance and transducing, and constructs the indoor well condition simulation experiment. The experimental data shows that the system can monitor and display the current leakage of the electric submersible pump in real time to ensure the safe operation of the electric submersible pump.

Downhole Telemetry Systems to Monitor Electric Submersible Pumps Parameters in Oil Well

“…The schematic diagram of the surface filter is shown in Figures 2, 3: The artificial star point is constructed by a three-phase electric reactor with the same three-phase winding parameters as the downhole motor, which supplies power for the downhole monitoring circuit based on the principle of star point equipotential [2]. The electronic surface unit connects to the downhole tool via the motor power cable through the choke.…”

“…As important artificial lifting equipment, electric submersible pump perform an irreplaceable role in the secondary and tertiary oil recovery, which puts forward higher requirements for the application reliability of electric submersible pump [2]. The electric submersible pump (ESP) has been widely used in oil fields [3] for its advantages of high lift, large displacement, and convenience for management [4].…”