Helical chisel insert for rock bits

Details Helical chisel insert for rock bits Helical chisel insert for rock bits

E - Fixed Constructions

21

B

E21B 10/58 (2006.01) E21B 10/46 (2006.01) E21B 10/52 (2006.01)

Patent

CA 2658363

An insert for an earth boring drill bit, such as a PDC rock bit or a roller cone rock bit, is provided. The insert includes a base integrally joined to a top section, the top section having a first flank that curves in a substantially helical manner about a longitudinal axis of the insert to join a crest.

L'invention concerne un insert pour un trépan de forage de la terre, tel qu'un trépan PDC ou un trépan à molette. L'insert comprend une base d'un seul tenant jointe à une section supérieure, la section supérieure ayant un premier flan qui se courbe de façon sensiblement hélicoïdale autour d'un axe longitudinal de l'insert pour rejoindre une crête.

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