HSP Hydraulic Submersible Pump

Hydraulic Submersible Pumps are similar to standard ESPs, but are driven not by an submerged motor, but by a pressurized power fluid and a turbine. Thereby all potential failures of electrification (cable, motor, protector) are avoided, but also any problems arising from high temperature of the motor. Furthermore HSPs can operate at larger rotational speed than standard ESPs and are able to handle significant amount of free gas at intake. In an open design, the power fluid is commingled with the reservoir fluid after the centrifugal pump and needs to be separated again on surface. When being pumped in a closed system, more effort needs to be taken for the system design itself.