发明申请
US20080156544A1 DRILL BIT WITH CUTTER ELEMENT HAVING CROSSING CHISEL CRESTS 有权
具有切割机组的刀具元件钻头

DRILL BIT WITH CUTTER ELEMENT HAVING CROSSING CHISEL CRESTS
摘要:
A drill bit for cutting a borehole comprises a bit body including a bit axis. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body. Further, the drill bit comprises a cutter element having a base portion with a diameter and a cutting portion extending therefrom. The cutting portion comprising a first pair of flanking surfaces that taper towards one another to form a first elongate chisel crest, and a second pair of flanking surfaces that taper towards one another to form a second elongate chisel crest that intersects the first elongate chisel crest in top view. The first crest tangent angle at 10% of the diameter measured radially from the central axis on the first elongate chisel crest in profile view is greater than 75° and less than or equal to 90°.
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