Protector for electrical submersible pumps
AssigneeSchlumberger Technology Corporation
InventorsMichael H. Du, Lawrence C. Lee, Arunkumar Arumugam, Ashley C. Kishino
Life of this patent
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Abstract
A system and method for protecting a motor for a submersible pumping system. A variety of motor protectors are provided for application in variable temperature environments and multiple wellbore orientations. The motor protectors may include one or more of a positively pressurized bellows, a relatively balanced pressure bellows free of sliding seals, and a multi-orientable labyrinth. Each of these motor protectors also may have various moisture absorbents, filters, particle shedders and various conventional motor protector components.
Claims15
A pressure equalization system for a submersible pumping system, comprising:
- a motor protector having a multi-orientable labyrinth assembly comprising at least one conduit extending in a zigzag pattern and a crisscross pattern to provide operability in the multiple orientations, wherein first and second ends of the at least one conduit are configured for fluid coupling with a first fluid and a second fluid, respectively.
A submersible pumping system, comprising:
- a motor comprising an internal motor fluid;
- a pump operatively coupled to the motor;
- a motor protection assembly coupled to the motor,comprising:
- a multi-orientable labyrinth assembly comprising at least one conduit extending back and forth along an interior region and in an arcuate pattern around the interior region to provide operability in the multiple orientations, wherein first and second ends of the at least one conduit are configured for fluid coupling with a first fluid and a second fluid, respectively.
Dependencies are inferred from the claim text.