Patent ID: 11952874
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC E  F | IPC E  F

Claim 16:
17. A method for producing hydrocarbons from a subterranean well, the method including:
forming a rotor assembly by positioning an intermediate rotor bearing assembly and a rotor member onto a rotor shaft so that the rotor member and the intermediate rotor bearing assembly circumscribe the rotor shaft, where the rotor shaft is an elongated member;
pulling the rotor assembly into an interior cavity of a stator body within a motor housing, the motor housing being an elongated member and the stator body being part of a stator, where:
the rotor shaft extends along a central axis of the stator;
a liner is located along an interior surface of the interior cavity, the liner being a thin walled member that is secured to the motor housing and that hermetically seals dielectric fluid in contract with the stator body from the rotor assembly;
a rotor cavity is located within an inner bore of the liner;
a membrane is located within the liner;
a hydrophobic fluid comprising magnetic particles is circulating within the rotor cavity, the hydrophobic fluid being different and separate from the dielectric fluid; and where
the motor housing, the stator, the rotor assembly, and the liner form a motor;

forming an electrical submersible pump assembly with the motor, a seal section, and a pump;
lowering the electrical submersible pump assembly into the subterranean well with a deployment string; and
operating the electrical submersible pump assembly to lift production fluids in a direction out of the subterranean well.