The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2012
Filed:
Mar. 09, 2009
Tom G. Yohanan, Broken Arrow, OK (US);
Dick L. Knox, Claremore, OK (US);
John M. Leuthen, Claremore, OK (US);
Jim E. Layton, Chelsea, OK (US);
Howard G. Thompson, Claremore, OK (US);
Tom G. Yohanan, Broken Arrow, OK (US);
Dick L. Knox, Claremore, OK (US);
John M. Leuthen, Claremore, OK (US);
Jim E. Layton, Chelsea, OK (US);
Howard G. Thompson, Claremore, OK (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An electrical submersible pumping (ESP) system can include a pump located in a wellbore, a motor attached to the pump, a power source located at the surface, a cable electrically coupling the power source and the motor, and a current sensor. The ESP system can also include a controller communicating with the current sensor to calculate a voltage drop associated with the cable responsive to an impedance of the cable. The controller can also control a power source output voltage responsive to the calculated voltage drop. For example, the controller can adjust the power source output voltage to minimize a cable current while maintaining a minimum motor voltage. The controller can also control a motor shaft speed by changing a power source output voltage frequency to compensate for changing slip and adjust the power source output voltage to minimize the cable current while maintaining a minimum motor voltage.