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:
Feb. 25, 2003
Filed:
May. 30, 2001
Applicant:
Inventor:
Frank J. Schuh, Plano, TX (US);
Assignee:
Validus International Company, LLC, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/04 ;
U.S. Cl.
CPC ...
E21B 7/04 ;
Abstract
A method and apparatus for recomputing an optimum path between a present location of a drill bit and a direction or horizontal target uses linear approximations of circular arc paths. The technique does not attempt to return to a preplanned drilling profile when there actual drilling results deviate from the preplanned profile. By recomputing an optimum path, the borehole to the target has a reduced tortuosity.