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. 08, 2018
Filed:
Oct. 09, 2013
Thomas Kruspe, Niedersachsen, DE;
Robert A. Estes, Tomball, TX (US);
Rocco Difoggio, Houston, TX (US);
Francis Chad Hanak, League City, TX (US);
Thomas Kruspe, Niedersachsen, DE;
Robert A. Estes, Tomball, TX (US);
Rocco DiFoggio, Houston, TX (US);
Francis Chad Hanak, League City, TX (US);
BAKER HUGHES, A GE COMPANY, LLC, Houston, TX (US);
Abstract
A method, system and drilling apparatus for directional drilling are disclosed. A drill bit is located at a downhole end of a drill string in a borehole. A length of the borehole between a surface location and the drill bit at the downhole end of a drill string is determined and an azimuth angle and inclination of the drill bit is obtained. The length of the borehole may be determined by recording an arrival time at a downhole location of an acoustic pulse travelling from a surface location to the downhole location and determines the travel time and borehole length therefrom. A downhole processor determines a position and orientation of the drill bit from the determined length, azimuth angle and inclination and alters a steering parameter of the drill bit using the determined position and orientation of the drill bit to obtain a selected trajectory for drilling the borehole.