发明名称 |
CUTTING STRUCTURES FOR FIXED CUTTER DRILL BIT AND OTHER DOWNHOLE CUTTING TOOLS |
摘要 |
A downhole cutting tool may include a tool body; a plurality of blades extending azimuthally from the tool body; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least two conical cutting elements comprising a substrate and a diamond layer having a conical cutting end, wherein at least one of the at least two conical cutting elements has a positive back rake angle, and at least one of the at least two conical cutting elements has a negative back rake angle. |
申请公布号 |
CA2827116(C) |
申请公布日期 |
2016.06.14 |
申请号 |
CA20122827116 |
申请日期 |
2012.02.10 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
AZAR, MICHAEL G.;DURAIRAJAN, BALA;KESHAVAN, MADAPUSI, K. |
分类号 |
E21B10/43;E21B10/55;E21B10/58 |
主分类号 |
E21B10/43 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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