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. 17, 2019
Filed:
May. 24, 2017
Shell Oil Company, Houston, TX (US);
David Alston Edbury, Berkshire, GB;
Jose Victor Guerrero, Spring, TX (US);
Duncan Charles Macdonald, Houston, TX (US);
James Bryon Rogers, Katy, TX (US);
Donald Ray Sitton, Humble, TX (US);
Jason B. Norman, Houston, TX (US);
SHELL OIL COMPANY, Houston, TX (US);
Abstract
A method of controlling a direction of drilling of the drill string used to form an opening in a subsurface formation, comprises varying a speed of the drill string during rotational drilling such that the drill string is at a first speed during a first portion of the rotational cycle and at a second speed during a second portion of the rotational cycle wherein the first speed is higher than the second speed, and wherein operating at the second speed in the second portion of the rotational cycle causes the drill string to change the direction of drilling.