Patents by Inventor Patricia Diane Dougherty

Patricia Diane Dougherty has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dual zone flow choke for downhole motors
    Patent number: 7828059
    Abstract: A submersible pumping system for use downhole, wherein the system includes a pump, an inlet section for receiving fluid, a pump motor, and an actively controlled flow restriction device for controlling flow to the submersible pump from an upper fluid producing zone. Active flow control proximate to the submersible pump motor protects the pump motor from overheating.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: November 9, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Leslie Claud Reid, Patricia Diane Dougherty
  • DUAL ZONE FLOW CHOKE FOR DOWNHOLE MOTORS
    Publication number: 20090047157
    Abstract: A submersible pumping system for use downhole, wherein the system includes a pump, an inlet section for receiving fluid, a pump motor, and an actively controlled flow restriction device for controlling flow to the submersible pump from an upper fluid producing zone. Active flow control proximate to the submersible pump motor protects the pump motor from overheating.
    Type: Application
    Filed: August 14, 2007
    Publication date: February 19, 2009
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Leslie Claud Reid, Patricia Diane Dougherty