Drill bit, hard member, and bit body

Details Drill bit, hard member, and bit body Drill bit, hard member, and bit body

E - Fixed Constructions

21

B

E21B 10/58 (2006.01) B23B 31/00 (2006.01) B23B 51/00 (2006.01) B23B 51/02 (2006.01) B23Q 11/00 (2006.01) E21B 10/44 (2006.01) E21B 10/60 (2006.01)

Patent

CA 2406731

A rotary drill bit for penetrating earth strata wherein the drill bit includes a drill bit body (22) that has an axial forward end (24). The drill bit body has a hard insert (56), which is preferably monolithic, that is affixed to the drill bit body at the axial forward end thereof. The hard insert presents at least three discrete leading cutting edges for cutting the earth strata. Image

L'invention concerne un trépan rotatif conçu pour pénétrer dans une strate terrestre. Le trépan comprend un corps de trépan (22) à extrémité axiale (24) avant. Ledit corps de trépan possède un insert dur (56), de préférence, monolithique, fixé audit corps de trépan au niveau de son extrémité axiale avant. L'insert dur présente au moins trois bords de coupe avant discrets permettant de couper la strate terrestre.

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