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:
May. 30, 2017
Filed:
Dec. 30, 2013
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/06 (2006.01); E21B 3/00 (2006.01); E21B 4/00 (2006.01); E21B 47/024 (2006.01); E21B 47/18 (2012.01); E21B 49/00 (2006.01);
U.S. Cl.
CPC ...
E21B 7/067 (2013.01); E21B 3/00 (2013.01); E21B 4/00 (2013.01); E21B 47/024 (2013.01); E21B 47/18 (2013.01); E21B 49/00 (2013.01);
Abstract
A directional drilling steering system is configured to direct a tubular sleeve arranged at the bottom of a drill string adjacent the drill bit at a selected tilt angle with respect to the longitudinal axis of the uphole drill string and at a selected azimuth. Tilt angle can be achieved by axial movement of one or more pistons in engagement with the downhole tubular sleeve. Azimuth can be achieved by axial movement of the pistons or by rotation of the drill string. The movement of the downhole sleeve along the deviated path causes movement of the drill bit shaft and the drill bit coupled thereto.