Rotary drill bit

Details Rotary drill bit Rotary drill bit

E - Fixed Constructions

21

B

255/69

E21B 10/46 (2006.01) E21B 10/42 (2006.01) E21B 10/56 (2006.01)

Patent

CA 1319676

A B S T R A C T ROTARY DRILL BIT A rotary drill bit is provided with a plurality of cutting elements having a front layer of abrasive particles, wherein the cutting elements located in the centre region of the bit comprise a thicker abrasive front layer than those in the outer region of the bit. The bit design enables optimisation of drilling characteris- tics.

533027

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