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:
Feb. 25, 2020
Filed:
Jun. 10, 2016
Applicant:
Warrior Rig Technologies Limited, Calgary, CA;
Inventors:
Allan Stewart Richardson, The Woodlands, TX (US);
Peter Ernest James Root, Calgary, CA;
Assignee:
Warrior Rig Technologies Limited, Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/084 (2006.01); E21B 19/06 (2006.01); E21B 19/16 (2006.01); E21B 19/14 (2006.01); E21B 21/01 (2006.01); E21B 19/00 (2006.01); E21B 3/02 (2006.01); E21B 15/00 (2006.01);
U.S. Cl.
CPC ...
E21B 19/06 (2013.01); E21B 3/02 (2013.01); E21B 15/00 (2013.01); E21B 19/00 (2013.01); E21B 19/14 (2013.01); E21B 19/161 (2013.01); E21B 21/01 (2013.01);
Abstract
Apparatus for use in subsurface drilling permits coupling and uncoupling of drill string sections while continuously moving the drill string. Tripping times can be reduced while maintaining low speeds of the drill string. In one embodiment coupling units operable to make or break couplings between drill string sections are arranged to circulate around a closed path. Each of the coupling units includes an elevator. Drill string sections may be passed off to a pipe handling system on a back side of the apparatus.