Regenerative dynamometer for use with an electrical submersible pump
AssigneeBaker Hughes Oilfield Operations LLC
InventorsDaniel Wayne Merriott, Charles Collins, Nicholas Phelps, Christopher Brunner, Taoridi Ademoye
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Abstract
A dynamometer is used to dynamically evaluate an electrical submersible pump (“ESP”) motor while both are inside of a well. The dynamometer includes a ESP dyno that is mechanically coupled to the ESP motor. The ESP motor and ESP dyno can be a permanent magnet motor or an induction motor, and can have the same or similar values of inertia. Energy absorbed by the ESP dyno can be regenerated as electricity that is transmitted back to a power source, or converted to heat energy in a resistive load bank.
Claims17
A method of evaluating an electrical submersible pump (“ESP”) motor comprising:
- forming a test assembly by coupling an output of the ESP motor with another ESP motor that defines an ESP dyno;
- deploying the test assembly into a well;
- energizing the ESP motor;
- monitoring the test assembly;
- and
- qualifying the ESP motor for use in lifting liquids from a wellbore based on the step of monitoring.
A system for evaluating an electrical submersible pump (“ESP”) motor comprising:
- an ESP dyno selectively disposed in a test well and having a shaft that is rotationally coupled to a shaft of the ESP motor, wherein the ESP dyno comprises another ESP motor;
- a power source in electrical communication with the ESP motor;
- and
- a sensor attached to an output of the ESP dyno.
Dependencies are inferred from the claim text.