Schlumberger

KUDU Rodless PCP

Overview Library

Submersible electrical motor and progressing cavity pump (PCP) system

Sucker rod or tubing wear causes 30%–50% of progressing cavity pump failures. The severity of wear depends on factors such as dogleg severity (DLS), water cut, sand cut, and wellbore inclination. The KUDU Rodless PCP submersible electrical motor and PCP system eliminates rod failures, enabling pump installation in a high-DLS or horizontal section of the well and significantly increasing uptime.

With no rodstring, torque reduces 20% to 60%, efficiency and safety increase, and power consumption decreases.

Wide range of operation

The system features a low-speed downhole permanent magnet motor (PMM) drive and a PCP that work together without being limited by deviation profile. Adopting a low-speed PMM enables the KUDU Rodless PCP system to provide constant torque throughout its operating range from 50 to 500 rpm. Such system flexibility enables easy adjustment to a broad range of well production rates without replacing the pump.

The PMM also improves efficiency with low power loss in the rotor, increases power density with a shorter motor, and enhances dynamic performance with a variable frequency drive (VFD) specifically designed for PMMs.

Real-time downhole monitoring system

The system uses downhole telemetry to prevent pumpoff conditions, monitor equipment performance, and optimize well production. A multisensor downhole gauge package measures

  • intake pressure
  • intake temperature
  • motor winding temperature
  • vibration
  • pump discharge pressure (optional). 

Downhole signals are interpreted by a data acquisition system on the surface and then sent to the VFD for monitoring, control, and recording. 

Request More Information

Increased System Reliability with Reduced Torque and Power Consumption

KUDU Rodless PCP submersible electrical motor and PCP system
PrevNextZoom1 of 1