PFA motor protection bag
AssigneeGE Oil & Gas ESP, Inc.
InventorArcady Royzen
Life of this patent
Estimating the term…
Abstract
A motor assembly for use in a downhole submersible pumping system includes an electric motor and a motor protection bag. The motor protection bag surrounds a portion of the exterior surface of the motor to form an impermeable, corrosion-resistant barrier. The motor protection bag comprises a seamless, elongate cylindrical having a substantially constant inner diameter and open ends. The motor protection bag may be constructed from a suitable polymer, such as perfluoroalkoxy (PFA) fluoropolymer. The motor protection bag is held in place along the exterior surface of the motor with a plurality of clamps that prohibit the migration of fluid between the exterior of the motor and the motor protection bag.
Claims18
A motor assembly for use in a submersible pumping system configured to move fluids in a wellbore, the motor assembly comprising:
- a motor, wherein the motor has a motor housing and wherein the motor housing has an exterior surface;
- a motor protection bag, wherein the motor protection bag has open ends and surrounds a portion of the exterior surface of the motor housing and isolates the exterior surface of the motor housing from the fluids surrounding the motor within in the wellbore;
- and
- a pair of bag plates, wherein each one of the bag plates secures a separate one of the open ends to the exterior surface of the motor housing.
A submersible pumping system comprising:
- a pump;
- a seal section secured to the pump;
- and
- a motor assembly secured to the seal section, wherein the motor assembly comprises:
- a motor, wherein the motor has a motor housing that has an exterior surface;
- and
- a motor protection bag in contact with the exterior surface of the motor housing, wherein the motor protection bag isolates the exterior surface of the motor housing from the fluids surrounding the motor in a wellbore.
A motor assembly for use in a submersible pumping system, the motor assembly comprising:
- a motor, wherein the motor has a motor housing that has an exterior surface and an external diameter;
- and
- a bag seal assembly, wherein the bag seal assembly comprises:
- a motor protection bag in contact with the exterior surface of the motor housing, wherein the motor protection bag isolates the exterior surface of the motor housing from the fluids surrounding the motor in a wellbore;
- and
- a plurality of clamps configured to secure the motor protection bag to selected positions along the exterior surface of the motor housing.
Dependencies are inferred from the claim text.