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:
Jun. 07, 2016
Filed:
Feb. 22, 2013
Applicant:
National Oilwell Varco, L.p., Houston, TX (US);
Inventor:
Richard J. Sauvageau, Conroe, TX (US);
Assignee:
National Oilwell Varco, L.P., Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/04 (2006.01); E21B 17/10 (2006.01); E21B 10/60 (2006.01); E21B 10/08 (2006.01); E21B 10/14 (2006.01); E21B 10/42 (2006.01); E21B 10/48 (2006.01);
U.S. Cl.
CPC ...
E21B 10/04 (2013.01); E21B 10/08 (2013.01); E21B 10/14 (2013.01); E21B 10/42 (2013.01); E21B 10/60 (2013.01); E21B 17/1092 (2013.01); E21B 10/48 (2013.01);
Abstract
A drill bit comprises a plurality of annular blades coupled to a bit body. A plurality of gauge pads is coupled to the bit body and defines an outer cutting diameter. A circumferentially continuous gauge ring is coupled to the bit body and defines an inner cutting diameter. An inner cutting structure is coupled to the bit body and has a cutting diameter substantially equal to the inner cutting diameter.