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:
Mar. 27, 2012
Filed:
Jun. 17, 2009
Robert D. Allen, Claremore, OK (US);
John Michael Leuthen, Claremore, OK (US);
Dick L. Knox, Claremore, OK (US);
Jerald R. Rider, Tulsa, OK (US);
Tom G. Yohanan, Broken Arrow, OK (US);
Brown L. Wilson, Tulsa, OK (US);
Bryan D. Schulze, Owasso, OK (US);
Robert D. Allen, Claremore, OK (US);
John Michael Leuthen, Claremore, OK (US);
Dick L. Knox, Claremore, OK (US);
Jerald R. Rider, Tulsa, OK (US);
Tom G. Yohanan, Broken Arrow, OK (US);
Brown L. Wilson, Tulsa, OK (US);
Bryan D. Schulze, Owasso, OK (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A device and method can detect, and also break, an occurrence of gas lock in an electrical submersible pump assembly in a well bore based upon surface or downhole data without the need for operator intervention. To detect an occurrence of gas lock, an instantaneous value is monitored using a sensor. Then a controller compares the instantaneous value to a threshold value over a predetermined duration to thereby detect the occurrence of gas lock in the electrical submersible pump assembly. Sensors can include, for example, a differential pressure gauge, a pressure gage located in a pump stage located toward the inlet, a fluid temperature sensor located toward the discharge, a free gas detector located near the pump discharge, an electrical resistivity gage, a flow meter located within surface production tubing, and a vibration sensor attached to a tubing string to measure a vibration signature.