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:
Mar. 28, 2017
Filed:
Jun. 27, 2012
Applicant:
Eric Cayeux, Sandnes, NO;
Inventor:
Eric Cayeux, Sandnes, NO;
Assignee:
International Research Institute of Stavanger AS, Stavanger, NO;
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/09 (2012.01); E21B 47/14 (2006.01); E21B 47/04 (2012.01);
U.S. Cl.
CPC ...
E21B 47/09 (2013.01); E21B 47/04 (2013.01); E21B 47/14 (2013.01);
Abstract
A method is for determining the position of a lower portion of a drill string in a bore hole. The drill string comprises a number of drill string components, each drill string component being interconnected by means of at least one joint. Several ultrasonic sensors are arranged after each other along a drill string. The method comprises localizing the position of the chamfer of the joint relative to the ultrasonic sensors.