B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
B23P 15/28 (2006.01) E21B 10/46 (2006.01) E21B 10/50 (2006.01)
Patent
CA 2419928
A drill bit including a bit body having at least one roller cone rotatably coupled to the bit body with a plurality of milled teeth formed on the at least one roller cone is disclosed. At least one milled tooth is arranged so as to form a gage row milled tooth, and the gage row milled tooth includes hardfacing thereon. A cutting element insert is mounted in a gage face of the gage row milled tooth. A method of forming a drill bit structure, the method including machining at least one hole in a preselected location on a gage surface of at least one milled tooth, positioning a plug in the at least one hole, applying a hardfacing material to the at least one milled tooth, removing the plug from the at least one hole, and positioning a drilling insert in the at least one hole is also disclosed.
Borden Ladner Gervais Llp
Smith International Inc.
LandOfFree
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