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:
Nov. 29, 2016
Filed:
Nov. 16, 2011
Applicant:
Charles Orbell, Melbourne Beach, FL (US);
Inventor:
Charles Orbell, Melbourne Beach, FL (US);
Assignee:
MANAGED PRESSURE OPERATIONS PTE LTD, Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 44/04 (2006.01); E21B 21/08 (2006.01); E21B 44/00 (2006.01);
U.S. Cl.
CPC ...
E21B 44/04 (2013.01); E21B 21/08 (2013.01); E21B 44/00 (2013.01);
Abstract
A method of drilling a subterranean bore hole comprising a) pumping a drilling fluid down a drill string, the drill string having a drill bit at an end thereof, b) rotating the drill string about its longitudinal axis to that the bit forms bore hole in the ground, the method further comprising the steps of: c) changing the rate of pumping of the drilling fluid into the drill string in response to a change in the speed of rotation of the drill string, and/or changing the speed of rotation of the drill string in response to a change in the rate of pumping of the drilling fluid into the drill string.