ESP Permanent Magnet Motors | SLB

ESP Permanent Magnet Motor

For oil and gas, mine dewatering, and geothermal REDA ESP pumps

Artist's impression of REDA ESP pump with permanent magnet motor running along horizontal well.

† Performance improvement is based on a 4.61-in [117-mm], 322-hp motor configuration compared with previous-generation induction motor technology. Calculations are based on a run life of 365 days with 100% uptime and take into consideration efficiency losses of the power cable, variable frequency or variable speed ESP drive, and transformer.
The conversion from electricity to CO2 is based on the IEA Emission Factors 2019 reference of 485.30 g of CO2/kW.h.

Reduce your operation’s energy consumption and emissions

Assessing the power efficiency of electric submersible pumps (ESPs) is a practical first step to reducing energy consumption and the resulting emissions during operation. Pumps and motors are the components with the largest impact on energy consumed.

Permanent magnet motors (PMMs) deliver higher efficiency, power factor, and power density as well as a wider range of operating speeds compared with conventional induction motors. REDA ESP pump PMM technology lowers electricity consumption by up to 10% because of its greater efficiency, saving energy and reducing Scope 1 or Scope 2 emissions (depending on the electricity source).

Efficiency: Up to 93% at 100% load
Motor ODs, in [mm]: 3.19 [81], 4.61 [117], and 5.62 [143]
High reliability: Extended run life due to cooler motor running temperatures
External view of permanent magnet motor for REDA ESP pumps. Cutaway view of permanent magnet motor for REDA ESP pumps, showing internal components.
ESP permanent magnet motors (PMMs) are not all created equal. Detailed engineering and excellence in manufacturing set the red-painted REDA ESP pump's PMM technology apart (left). Hidden beneath the red housing, it is the implementation of lessons learned since 1930 that makes an ESP pump a REDA pump (right).

Motor size and power enable greater operational flexibility

Our energy-efficient yet powerful PMMs are reliable, robust, and available in a wide range of sizes and horsepower options. Higher power per unit of length—power density—results in a motor that's shorter and lighter than legacy induction ESP motors without reducing the rating. It also enables a single-motor configuration in place of long tandem motor arrangements, which reduces risks associated with ESP installation in deviated wells, especially wells with high dogleg severity (DLS).

In rapidly changing environments, the PMM's higher torque capabilities enable stable ESP operation during increased solids production or water cut. Stable torque across various load conditions is the key differentiator, enabling higher efficiency and power savings versus induction motor technology.

View of Earth at night from space, looking down at Central and South America , Carribbean, and Pacific

Permanent Magnet Motors: The Future of ESP Applications?

A detailed study of the potential economic and environmental benefits of using PMMs.

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Why are PMMs more efficient than induction motors?

PMMs are synchronous electric machines—the rotor rotates at the same speed as the magnetic field in the stator. This synchronous operation reduces losses in the core, resulting in less heating and an expanded operating envelope for the ESP.

For optimal operation, PMMs require a variable speed drive (VSD) with special control algorithms to time the switching of the output transistors and control the current in the motor windings. The incremental cost of upgrading to a VSD is quickly recovered.

Permanent magnet motor for REDA ESP pumps.

Decarbonize Your Operations

ESP PMMs are part of our Transition Technologies portfolio and full field development solutions that sustainably drive high performance. Learn about our collaborative approach and full field development solutions that drive high performance, while reducing environmental impact throughout the life of your asset.

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Streamlined installation and real-time monitoring

Our PMMs are filled in a controlled environment with high-temperature synthetic oil to provide dielectric strength, bearing lubrication, and thermal conductivity. The ESP flange connection facilitates reliable motor and protector connections while ensuring a leak-tight seal. MaxLok ESP quick-plug motor lead extension (MLE) simplifies making up the pothead to the motor with a plug-in connection that eliminates taping of pothead terminals at the wellsite.

The gauge-ready base is compatible with any Phoenix artificial lift downhole monitoring system sensor for real-time monitoring of ESP and reservoir properties. A temperature sensor connected directly to the motor winding enables monitoring motor-winding temperature in real time through all stages of operation.

PMM safety

Schlumberger has implemented operational standard work instructions globally to enhance the safety of everyone involved in running, operating, and removing PMMs. Training for your personnel is available on request at our assembly, repair, and test (ART) centers.

World map showing Schlumberger artificial lift surveillance, manufacturing, and ESP repair and test centers