Sealed esp motor system

Details Sealed esp motor system Sealed esp motor system

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 13/08 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2414691

The present invention provides a system for use in a wellbore, comprising: a motor in communication with an expansion chamber to substantially equalize the internal pressure of the motor with the external pressure of the wellbore, the motor further having a motor shaft rotatable about an axis to drive a plurality of magnets arranged in axially spaced rings disposed about the axis; and a pump having a pump shaft coupled to a plurality of driven magnets arranged in axially spaced rows concentric with the plurality of magnets to form a magnetic coupling, the dynamic stability of the magnetic coupling being enhanced by an intermediate bearing support having at least two intermediate bearings radially spaced and concentric with each other; wherein rotation of the motor shaft in the plurality of magnets causes rotation of the plurality of driven magnets to operate the pump.

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