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:
Jan. 31, 2017
Filed:
Jan. 13, 2014
Applicant:
Varel Europe S.a.s., Pau, FR;
Inventor:
Michel de Reynal, Jr., Arthez de Bearn, FR;
Assignee:
VAREL EUROPE S.A.S., Pau, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 49/00 (2006.01); G01V 99/00 (2009.01); G01V 5/12 (2006.01); G01V 1/34 (2006.01); G01V 1/40 (2006.01); E21B 44/00 (2006.01); G01V 1/50 (2006.01); G01V 11/00 (2006.01);
U.S. Cl.
CPC ...
E21B 49/003 (2013.01); E21B 44/00 (2013.01); G01V 1/345 (2013.01); G01V 1/50 (2013.01); G01V 5/12 (2013.01); G01V 11/00 (2013.01); G01V 99/00 (2013.01); G01V 1/40 (2013.01); G01V 2210/624 (2013.01);
Abstract
A method for analyzing a wellbore drilling operation includes acquiring sonic log data, gamma ray log data, and rate of penetration (ROP) data. The sonic log data, the gamma ray log data, and the ROP data are associated with depth intervals of a wellbore. The method further includes determining unconfined compressive strength (UCS) of a rock formation associated with the wellbore using well log data and drilling data. The well log data is limited to the sonic log data and the gamma ray log data, and the drilling data is limited to the ROP data.