MOTOR BEARING FOR ELECTRIC SUBMERSIBLE MOTORS

摘要

A motor bearing for an electric submersible motor is described. An electric submersible motor includes a rotatable motor shaft extending longitudinally through a submersible motor, a bearing sleeve secured to the rotatable motor shaft in between two adjacent rotor sections, a motor bearing radially outward from the bearing sleeve and pressed against a stator bore, wherein the motor bearing comprises a series of magnets dispersed around an outer diameter of the motor bearing, and an insulation layer covering a surface of each magnet of the series of magnets, wherein the insulation layer faces the stator bore. A motor bearing includes a series of recessions dispersed around an outer axial surface of a motor bearing, a magnet inset in each recession of the series of recessions, and an insulation layer coating a surface of each of the magnets.

主权项

1. An electric submersible motor, comprising:
a rotatable motor shaft extending longitudinally through a submersible motor; a bearing sleeve secured to the rotatable motor shaft in between two adjacent rotor sections; a motor bearing radially outward from the bearing sleeve and pressed against a stator bore, wherein the motor bearing comprises a series of magnets dispersed around an outer diameter of the motor bearing; and an insulation layer covering a surface of each magnet of the series of magnets, wherein the insulation layer faces the stator bore.