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:
Dec. 18, 2012
Filed:
Oct. 23, 2009
Nicholas D. Johnson, Claremore, OK (US);
Douglas W. Berry, Broken Arrow, OK (US);
Nicholas D. Johnson, Claremore, OK (US);
Douglas W. Berry, Broken Arrow, OK (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
The bottom tag of the present invention comprises a tapered coupling that is secured below the stator housing. In one embodiment the smaller diameter of the coupling is smaller than the rotor minor diameter. In another embodiment the smallest diameter in the coupling tag is smaller than the major diameter of the rotor and longer than one half the rotor pitch, so that no more than one half of a rotor pitch can enter. In either case there are optional side openings to aid flow during operation. The taper in the coupling tag guides coiled tubing through when the rotor is removed to clean up the wellbore below by jetting through the coiled tubing. The taper can also guide measurement equipment through.