Multi-sectional percussive drill bit assembly

Details Multi-sectional percussive drill bit assembly Multi-sectional percussive drill bit assembly

E - Fixed Constructions

21

B

E21B 10/36 (2006.01) E21B 10/00 (2006.01)

Patent

CA 2655142

A multi-sectional percussive drill bit assembly for drilling holes in earth formation primarily used in conjunction with a pneumatic percussive device. The drill bit assembly is comprised of an easily removable bit that is rotationally driven by a lug and pocket structure and axially limited in travel by means of retaining members.

L'invention concerne un ensemble trépan de forage à percussion à plusieurs sections à des fins de forage de trous dans une formation terrestre principalement utilisé avec un dispositif à percussion pneumatique. L'ensemble trépan de forage est constitué d'un trépan à dépose rapide entraîné par rotation par une structure de type à tenon et poche et limité axialement au niveau dans sa course par des d'organes de retenue.

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