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SUBMERSIBLE PUMPING SYSTEMS AND METHODS FOR DEEP WELL APPLICATIONS

  • US 20100270028A1
  • Filed: 05/06/2010
  • Published: 10/28/2010
  • Est. Priority Date: 05/16/2007
  • Status: Abandoned Application
First Claim
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1. A submersible pumping system for a well, comprising:

  • a power supply;

    a power converter coupled to the power supply; and

    a subsurface unit coupled to the power converter and configured to be positioned in the well remote from the power supply and the power converter, wherein the subsurface unit includes a pump portion and a motor operably coupled to the pump portion, and a subsurface controller, the subsurface controller further comprising;

    a power compensation circuit operable to receive electrical power from the power converter configured to reduce at least one of a reactance introduced by the motor and reactive and resistive effects introduced by electrical leads coupling the power converter to the subsurface unit;

    a motor controller coupled to the power compensation circuit that is configured to convert electrical power received from the power compensation circuit to polyphase electrical power that is communicated to the motor; and

    a motor speed controller configured to control a rotational speed of the motor when the polyphase electrical power is first applied to the motor.

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