Drill bit having enhanced stability

Details Drill bit having enhanced stability Drill bit having enhanced stability

E - Fixed Constructions

21

B

E21B 10/00 (2006.01) E21B 10/42 (2006.01) E21B 10/46 (2006.01) E21B 17/10 (2006.01)

Patent

CA 2073259

The present invention is a drill bit having a multi-level gage defining the outermost radius of the bit, at least one portion of the gage extending longitudinally closer to the bit face than another portion.

Cette invention concerne un trépan présentant un gabarit à plusieurs niveaux qui définit le rayon extérieur de la mèche. Une section au moins de ce gabarit se prolonge dans le sens longitudinal et se rapproche davantage de la face de la mèche qu'une autre section.

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