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:
Apr. 12, 2016
Filed:
Dec. 18, 2012
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Marc Haci, Houston, TX (US);
Eric E. Maidla, Houston, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 44/00 (2006.01); E21B 7/04 (2006.01); E21B 7/06 (2006.01); E21B 47/024 (2006.01); E21B 7/10 (2006.01);
U.S. Cl.
CPC ...
E21B 44/00 (2013.01); E21B 7/04 (2013.01); E21B 7/068 (2013.01); E21B 7/10 (2013.01); E21B 47/024 (2013.01);
Abstract
A method for directional drilling of a wellbore includes automatically rotating a drill string having a steerable drilling motor at an end thereof in a first direction so that a measured torque related parameter thereon reaches a first value. The drill string is automatically rotated in a second direction so that the measured torque related parameter reaches a second value lower than the first value. A rate of release of the drill string is automatically controlled so that at least one of selected drilling fluid pressure and a range thereof is maintained.