Artificial lift equipment power line communication
AssigneeSchlumberger Technology Corporation
InventorsLuis Parra, Fraz Ahmad Kharal, Jostein Fonneland, John A. Booker
Life of this patent
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Abstract
A system can include a transformer and a rectifier to derive DC power from AC power at a wye point of an electric motor; a sensor that includes a sensor signal output to output a sensor signal; a telemetry driver that includes a DC power input to receive the derived DC power and that includes an input to receive the sensor signal and an output to output a data signal representing the sensor signal; and circuitry to deliver the data signal representing the sensor signal to the wye point of the electric motor. Various other apparatuses, systems, methods, etc., are also disclosed.
Claims11
A system comprising:
- an electric submersible pump that comprises an electric motor having a wye point;
- a power cable that comprises three conductors, each of the three conductors electrically connected to the electric motor;
- a telemetry driver powered by DC power that comprises at least one electrical connection to the power cable;
- a sensor;
- a transformer that comprises two opposing windings wherein one of the windings passes DC power from the wye point to power the telemetry driver and the other one of the windings provides stepped down AC power from the wye point for conversion to DC power to power the telemetry driver;
- and
- circuitry responsive to detection of a ground fault to selectively convert the stepped down AC power to DC power to power the telemetry driver.
A system comprising:
- circuitry to determine one or more power signal characteristics at a wye point of an electric motor of an electric submersible pump;
- circuitry responsive to the determined one or more power signal characteristics to automatically provide DC power from the wye point or to automatically derive DC from AC power from the wye point;
- and
- circuitry responsive to detection of a ground fault comprising circuitry to selectively provide DC power from the wye point and to automatically derive DC power from AC power from the wye point.
Dependencies are inferred from the claim text.