The special tapered surfaces design make sure the cutter exposure to drilling fluid,so this can cool,clear the cutter and extend the it life.increase the fluid flow and keep from the bit balling.
The carbide inserts arrangement on the blades was design by "equal density" principle,it can effective cut the wall of hole.
The back and side rakes of every PDC cutter was different arrange for equal loading,so it can work more times.
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