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US 2016/0109063 A1Published application
Apparatus and method to flush esp motor oil
AssigneeApache Corporation
InventorMichael R. Berry
Life of this patent
Estimating the term…
Abstract
A motor oil change system for an electric submersible pump includes motor oil reservoir disposed proximate an electric motor used to drive a wellbore pump and means for selectively moving oil from the reservoir into the motor to displace oil present in the motor.
Claims18
A motor oil change system for an electric submersible pump, comprising:
- a motor oil reservoir disposed proximate an electric motor used to drive a wellbore pump;
- and
- means for selectively moving oil from the reservoir into the motor to displace oil present in the motor and/or protector.
A method for changing motor oil in an electric submersible wellbore pump, comprising:
- at selected times, moving motor oil into a motor and motor protector on the wellbore pump from a reservoir proximate the motor, the moving motor oil displacing existing oil present in the pump and protector;
- wherein the moving is performed until substantially all the existing oil is displaced into a wellbore by the moved oil.
Dependencies are inferred from the claim text.