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:
Jun. 20, 2017
Filed:
Oct. 11, 2012
Shell Oil Company, Houston, TX (US);
David Alston Edbury, Reading, 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);
Shell Oil Company, Houston, TX (US);
Abstract
The present disclosure provides a method for picking up a drill bit off the bottom of an opening in a subsurface formation. The method includes setting a predetermined level of differential pressure across a mud motor at which pickup of the drill bit is to be initiated, and monitoring the differential pressure across the mud motor. The method also includes allowing differential pressure across the mud motor to decrease to the predetermined level, and when the predetermined level is reached, automatically picking up the drill bit.