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. 05, 2017
Filed:
Apr. 05, 2015
Applicant:
Schlumberger Technology Corporation, Sugar land, TX (US);
Inventors:
Martin Bayliss, Stroud, GB;
Neilkunal Panchal, London, GA (US);
James Whidborne, Milton Keynes, GB;
Wayne J. Phillips, Houston, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 44/00 (2006.01); E21B 7/04 (2006.01); E21B 7/06 (2006.01); G05B 15/02 (2006.01); E21B 47/024 (2006.01);
U.S. Cl.
CPC ...
E21B 44/00 (2013.01); E21B 7/04 (2013.01); E21B 7/06 (2013.01); G05B 15/02 (2013.01); E21B 47/024 (2013.01);
Abstract
A drilling tool in accordance to one or more aspects includes a processor and a steering device. The processor determines a demand attitude and an instantaneous drilling tool attitude, evaluates a control law to derive a control law tool face, and converts the control law tool face to an equivalent tool face. The steering device applies the equivalent tool face to control a drill attitude of the drilling tool.