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. 27, 2018
Filed:
May. 02, 2014
Applicant:
Tesco Corporation, Houston, TX (US);
Inventors:
Brian Dewald, Calgary, CA;
Douglas Greening, Calgary, CA;
Assignee:
Tesco Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/06 (2006.01); E21B 19/07 (2006.01); E21B 44/00 (2006.01); E21B 19/10 (2006.01); E21B 33/04 (2006.01);
U.S. Cl.
CPC ...
E21B 19/06 (2013.01); E21B 19/07 (2013.01); E21B 19/10 (2013.01); E21B 33/0422 (2013.01); E21B 44/00 (2013.01);
Abstract
Present embodiments are directed to a system and method for coordinating operation of a gripping device of a top drive system and power slips of a drilling rig to ensure that at least one of the gripping device and the power slips is engaged with a length of tubular and/or a drill string to support weight of the length of tubular and weight of the drill string.