E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/08 (2006.01) B23B 51/00 (2006.01) B23K 1/00 (2006.01) B23P 15/28 (2006.01) B29C 65/42 (2006.01) B29C 70/02 (2006.01)
Patent
CA 2538545
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.
Alsup Shelton W.
Azar Michael G.
Hoffmaster Carl
Isnor Sidney J.
Oldham Thomas W.
Alsup Shelton W.
Azar Michael G.
Hoffmaster Carl
Isnor Sidney J.
Oldham Thomas W.
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