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:
Apr. 21, 2020
Filed:
Jan. 21, 2014
Applicant:
Nov Downhole Eurasia Limited, Stonehouse, Gloucestershire, GB;
Inventor:
Laurence Mortimer, Brockworth, GB;
Assignee:
NOV Downhole Eurasia Limited, Stonehouse, Glouchester, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 30/17 (2020.01); E21B 10/00 (2006.01); E21B 4/00 (2006.01); E21B 10/43 (2006.01); E21B 10/55 (2006.01); E21B 10/42 (2006.01); E21B 10/54 (2006.01);
U.S. Cl.
CPC ...
G06F 30/17 (2020.01); E21B 4/00 (2013.01); E21B 10/00 (2013.01); E21B 10/43 (2013.01); E21B 10/55 (2013.01); E21B 2010/425 (2013.01); E21B 2010/545 (2013.01);
Abstract
A drill bit (), for example of a fixed cutter type, comprises at least one structure, for example a blade, having first and second rows of cutters (-) thereon. The first row is configured to achieve suitable performance when the drill bit drills in concentric mode. The second row of cutters is configured to improve the performance of the first row of cutters when the drill bit drills in eccentric mode. For example, the second row increases depth of cut and wear resistance in eccentric mode drilling. The drill bit may be mounted on a bent motor () used in directional drilling.