Electric Submersible Pump (ESP)

system consists of multiple stages of centrifugal pumps which are connected to a submersible electric motor. The motor is powered by heavy duty cables connected to surface controls.
The motor rotates the shaft which is connected to the pump. The spinning impellers draw in fluid through the pump intake, pressurizing it and lifting it to the surface.
An inverted discharge design is configured the same, with the exception that the pump stages are inverted to pump fluids into the well formation from the surface. This configuration is typically used for injection of water into disposal wells.

Sensor: To optimize performance, operators can install a downhole sensor that communicates real-time system data such as pump intake and discharge pressures, temperatures, and vibration.

Electric Motor: esp motor cutawayThe submersible pump is powered by an electric motor. The size of the motor and horsepower rating are determined by the number of stages needed to generate sufficient head pressure to lift the liquid to the surface.

Seal-chamber: Isolates and protects the motor from damaging well fluids and equalizes the pressure in the wellbore with the oil pressure inside the motor.

PUMP: Shaft, Pump Intake and Stages (Impeller & Diffuser): The shaft connects the motor to the pump impellers through the seal-chamber. The shaft is designed to be as small in diameter as possible without compromising its strength; this allows greater volumes to pass through the pump intake.