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, 1995
Filed:
Feb. 18, 1993
Bob J Patton, Dallas, TX (US);
Patton Consulting, Dallas, TX (US);
Abstract
An improved method and apparatus for automatically controlling the direction of advance of a rotary drill to produce a borehole profile substantially as preplanned with minimal curvature while maintaining optimum drilling performance. The preferred embodiment of the system comprises a drill string; a drill bit; an appropriate motor for rotating said drill bit; a data processing system for storing a planned path; sensors for obtaining information for providing a profile of a drilled path of the borehole; a data processing system for comparing the drilled path with the planned path and for generating a correction signal representing the difference between the drilled path and the planned path; and a control system responsive to the correction signal to cause the drill string to follow a corrected path to cause the drilled borehole to coincide with the planned path.