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:
Jun. 11, 2019
Filed:
Nov. 13, 2015
Applicant:
Z Drilling Holdings, Inc., Frederick, CO (US);
Inventors:
Zan Elden Svendsen, Denver, CO (US);
Bruce M. Victor, Fort Lupton, CO (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/10 (2006.01); E21B 7/28 (2006.01); E21B 10/28 (2006.01); E21B 17/05 (2006.01);
U.S. Cl.
CPC ...
E21B 17/1078 (2013.01); E21B 7/28 (2013.01); E21B 10/28 (2013.01); E21B 17/05 (2013.01);
Abstract
Disclosed is a well bore reamer for enlarging, stabilizing and/or cleaning portions of a drilled hole. An internal clutch system comprising pins and springs cause a helical blade segment of the disclosed device to rotate about its axis in a clockwise direction during its movement in a wellbore. When the device is situated in a fixed position in the wellbore, rotation of the drill pipe causes the clutch system to lock the helical blade segment of device in place, forcing the reamer to rotate with the drill string.