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:
Sep. 01, 2020
Filed:
Feb. 08, 2017
Smart Drilling Gmbh, Gelsenkirchen, DE;
Werner Vorhoff, Wesel, DE;
Smart Drilling GmbH, , DE;
Abstract
The invention relates to a reliably functioning directional drilling device for continuous operation, with automatic, precision-controlled monitoring of targeted drilling at great depths with specification of a selectable directional path of the wellbore, comprising a housing, a bit drive shaft, which preferably rotates in the housing and which bears a rotary drill bit at its end, a control device located in the body section of the housing, and direction control devices for generating directing forces having radially alignable force components for the alignment of the directional drilling device during drilling operations, and magnetic field sensors that are connected to the control device, the magnetic field sensors being arranged in the head section, more specifically in the forward region of the housing facing the rotary drill bit, in close proximity to the rotary drill bit, i.e. near the rotary drill bit, and being calibrated by means of the method of the invention using a homogeneous magnetic field generated by a Helmholtz coil.