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. 13, 2014
Filed:
Sep. 07, 2011
David Iblings, Houston, TX (US);
Thomas F. Bailey, Houston, TX (US);
Ram K. Bansal, Houston, TX (US);
Adrian Steiner, Calgary, CA;
Michael Lynch, Houston, TX (US);
Simon J. Harrall, Houston, TX (US);
David Iblings, Houston, TX (US);
Thomas F. Bailey, Houston, TX (US);
Ram K. Bansal, Houston, TX (US);
Adrian Steiner, Calgary, CA;
Michael Lynch, Houston, TX (US);
Simon J. Harrall, Houston, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A method for drilling a wellbore includes drilling the wellbore by injecting drilling fluid into a top of a tubular string disposed in the wellbore at a first flow rate and rotating a drill bit. The tubular string includes: the drill bit disposed on a bottom thereof, tubular joints connected together, a longitudinal bore therethrough, a port through a wall thereof, and a sleeve operable between an open position where the port is exposed to the bore and a closed position where a wall of the sleeve is disposed between the port and the bore. The method further includes moving the sleeve to the open position; and injecting drilling fluid into the port at a second flow rate while adding a tubular joint(s) to the tubular string. The injection of drilling fluid into the tubular string is continuously maintained between drilling and adding the joint(s).