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:
Apr. 13, 1982
Filed:
Jul. 03, 1980
Early B Denison, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
A method and apparatus for steering a rotary drilling operation wherein the magnitude and direction of the side force on the bit is measured and used to control the weight on the bit and the rotary speed. The side force on the bit is determined by disposing strain gauges on a cylindrical member above the bit and making instantaneous measurements. The direction of the force is determined from sensors disposed adjacent the bit to determine the orientation and inclination of the bit simultaneously with the force measurements. The information is transmitted to the surface where a computer can compare the measurements with a model of the drill string and determine the proper bit weight and rotary speed.