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:
Dec. 12, 2017
Filed:
Dec. 31, 2015
Applicant:
National Oilwell Dht, L.p., Conroe, TX (US);
Inventors:
Thang Vo, Houston, TX (US);
Tjandra Sukendro, Conroe, TX (US);
Assignee:
National Oilwell DHT, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/16 (2006.01); B24D 3/06 (2006.01); E21B 10/52 (2006.01);
U.S. Cl.
CPC ...
E21B 10/16 (2013.01); B24D 3/06 (2013.01); E21B 10/52 (2013.01);
Abstract
A rolling cone drill bit for drilling a borehole in earthen formations includes a bit body having a bit axis. In addition, the rolling cone drill bit includes a rolling cone cutter mounted on the bit body and having a cone axis of rotation. The cone cutter includes a cone body, a plurality of teeth arranged in a first inner row, and a plurality of inserts. Each insert is disposed within one tooth in the first inner row.