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:
Oct. 08, 2019
Filed:
Nov. 05, 2014
Applicant:
Landmark Graphics Corporation, Houston, TX (US);
Inventors:
Avinash Wesley, Houston, TX (US);
Peter C. Yu, Houston, TX (US);
Assignee:
Landmark Graphics Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/00 (2012.01); E21B 44/00 (2006.01); E21B 47/09 (2012.01);
U.S. Cl.
CPC ...
E21B 47/00 (2013.01); E21B 44/00 (2013.01); E21B 47/0006 (2013.01); E21B 47/09 (2013.01);
Abstract
Tight spots in movements of a drill string in an oil well are identified by comparing a large interval hookload moving average to a short interval hookload moving average, comparing a large interval bit depth moving average to a short interval bit depth moving average, and DBSCANing the tight spots to identify a fully-stuck event.