发明名称 |
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°.
|
申请公布号 |
US2008156544(A1) |
申请公布日期 |
2008.07.03 |
申请号 |
US20070947226 |
申请日期 |
2007.11.29 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
SINGH AMARDEEP;BOUDRARE MOHAMMED |
分类号 |
E21B10/08 |
主分类号 |
E21B10/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|