Drill bit

Details Drill bit Drill bit

E - Fixed Constructions

21

B

E21B 10/18 (2006.01) E21B 7/16 (2006.01) E21B 10/38 (2006.01)

Patent

CA 2522568

A drill bit (10) for drilling a well bore (26) using solid material impactors comprising a nozzle (200) and a cavity (205) for accelerating the velocity of the solid material impactors and directing flow of the solid material impactors through the nozzle. The drill bit may also comprise a junk slot (204A) for return flow of the drilling fluid and solid material impactors.

L'invention concerne un outil de forage pour puits de forage utilisant des concasseurs à percussion sur matériau solide, avec buse et cavité pour l'accélération de la vitesse des concasseurs et l'orientation du flux des concasseurs via la buse. L'outil de forage peut aussi comprendre une fente de repêchage pour le flux de retour de fluide de forage, et pour le flux de retour des concasseurs à percussion sur matériau solide.

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