Sonic drill bit for core sampling

Details Sonic drill bit for core sampling Sonic drill bit for core sampling

E - Fixed Constructions

21

B

E21B 10/02 (2006.01) E21B 25/00 (2006.01) E21B 49/02 (2006.01)

Patent

CA 2720810

A drill bit for core sampling includes a body having a central axis and first end having a tapered outer surface and a radius transverse to the central axis, and an insert having a cutting surface on the first end oriented at an axial angle relative to the radius to move material displaced during drilling away from the first end.

Cette invention concerne un trépan pour carottage comprenant un axe central et une première extrémité dotée dune surface externe à section décroissante, ainsi quun rayon transversal à laxe central. Ledit trépan comprend également une pièce rapportée dotée sur sa première extrémité dune surface tranchante orientée dans un sens axial par rapport au rayon pour éloigner de ladite première extrémité le matériau déplacé au cours du forage.

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