Particle-matrix composite drill bits with hardfacing and...

Details Particle-matrix composite drill bits with hardfacing and... Particle-matrix composite drill bits with hardfacing and...

E - Fixed Constructions

21

B

E21B 10/54 (2006.01) C23C 30/00 (2006.01) E21B 10/56 (2006.01)

Patent

CA 2667079

A rotary drill bit includes a bit body substantially formed of a particle-matrix composite material having an exterior surface and an abrasive wear-resistant material disposed on at least a portion of the exterior surface of the bit body. Methods for applying an abrasive wear-resistant material to a surface of a drill bit are also provided.

L'invention concerne un trépan de forage rotatif comportant un corps de trépan constitué sensiblement d'un matériau composite à matrice de particules dotée d'une surface extérieure et d'un matériau abrasif résistant à l'usure disposé sur au moins une partie de la surface extérieure du corps de trépan. L'invention fournit étalement des procédés pour appliquer un matériau abrasif résistant à l'usure sur une surface d'un trépan de forage.

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