Halliburton Energy Services, Inc.

Andras Bencze

Hassan Mansir

Robert Charles De Long

An electric submersible pump includes a heat exchanger, a shaft comprising an axial bore, and a motor, which includes a rotor rotationally coupled to the shaft, a stator concentrically disposed with respect to the rotor, and a journal bearing disposed between the stator and the shaft. There is a gap between the rotor and the stator. The electric submersible pump further includes a first pump mechanically coupled to the shaft and configured to pump production fluid through a tubular, and a second pump mechanically coupled to the shaft and configured to pump coolant through the axial bore, the gap, and the heat exchanger. The heat exchanger transfers heat from the coolant to the production fluid to cool the motor.

Electric submersible pump with active cooling

Some implementations include an apparatus configured to, in a wellbore, eliminate voltage on one or more first conductors that are electrically connected to a surface-based power source. The apparatus may include a shorting ring electrically connectable to the first conductors and configured to electrically short the first conductors upon establishing an electrical connection with the first conductors. The apparatus may include a solenoid assembly to actuate in response to power on the first conductors from the surface-based power source. The apparatus may include a pin slider assembly connected to the first conductors and configured to move, in response to actuation by the solenoid assembly, between an electrical connection with the shorting ring and an electrical connection with one or more second conductors that have an electrical connection with a permanent magnet motor winding in the wellbore.

Current-controlled circuit breaker for electrical submersible pump motor leads

In some embodiments, an apparatus may comprise a slimline connector to connect a motor lead extension (MLE) to an electric motor of an electric submersible pump (ESP) to be positioned in a wellbore, the electric motor having a rotational axis. The slimline connector may comprise multiple power ports positioned circumferentially around an axis of the slimline connector, wherein the axis of the slimline connector is parallel with the rotational axis of the electric motor, and wherein each port of the multiple power ports is associated with a different electrical phase.

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Frimley, United Kingdom

Andras Bencze