Drill bit with continuously sharp edge cutting elements

Details Drill bit with continuously sharp edge cutting elements Drill bit with continuously sharp edge cutting elements

E - Fixed Constructions

21

B

E21B 10/46 (2006.01) E21B 10/48 (2006.01)

Patent

CA 2740218

A method of optimizing drill bit design and an optimized drill bit for drilling a well into an earth formation comprising a bit body; a number of blades spaced around the bit body, each blade having a curved outer edge and a forward face; a first row of cutter pockets recessed into the face along the outer edge of each blade; a second group of cutter pockets recessed into the face of each blade offset from the first row; and a plurality of cutting elements, each cutting element being brazed into a different one of the cutter pockets.

L'invention concerne un procédé permettant d'optimiser la conception d'un trépan et un trépan optimisé pour forer un puits dans une formation de terre, comprenant un corps de trépan; un certain nombre de lames espacées autour du corps de trépan, chaque lame présentant une arête extérieure incurvée et une face avant; une première rangée de poches d'éléments de coupe évidées dans la face le long de l'arête extérieure de la lame; un second groupe de poches d'éléments de coupe évidées dans la face de chaque lame décalée de la première rangée; et plusieurs éléments de coupe, chacun étant brasé dans une poche d'élément de coupe différente.

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