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:
Sep. 21, 2010
Filed:
Mar. 03, 2006
Carl Hoffmaster, Houston, TX (US);
Shelton W Alsup, Houston, TX (US);
Michael G. Azar, The Woodlands, TX (US);
Thomas W. Oldham, The Woodlands, TX (US);
Stuart R. Oliver, Magnolia, TX (US);
Sidney J. Isnor, Calgary, CA;
Carl Hoffmaster, Houston, TX (US);
Shelton W Alsup, Houston, TX (US);
Michael G. Azar, The Woodlands, TX (US);
Thomas W. Oldham, The Woodlands, TX (US);
Stuart R. Oliver, Magnolia, TX (US);
Sidney J. Isnor, Calgary, CA;
Smith International, Inc., Houston, TX (US);
Abstract
The invention provides a fixed cutter drill bit for drilling through unconsolidated, highly abrasive formations. The bit includes a bit body having a cutting face and a side portion. The bit body comprising carbide matrix material. A plurality of blades azimuthally spaced about the cutting face and a plurality of cutters disposed along the blades. At least one gage pad is disposed along a side of the bit body and includes wear resistant gage elements formed of a material more wear resistant than the matrix material forming a portion of the gage pad. The wear resistant elements have a rounded surface and are embedded in gage pad material proximal a leading edge of the gage pad to provide a rounded wear-resistant edge or surface proximal the leading edge.