发明名称 |
colocação de elemento de corte em uma broca de perfuração com cortador fixo para reduzir a fratura da mesa diamantada |
摘要 |
A rotary drag bit includes a primary cutter row comprising at least one primary cutter mounted on a blade, at least some cutters in the primary cutter row having a portion of a cutting surface thereof covered by a portion of the blade. A backup cutter row comprising at least one cutter may also be included, and at least a portion of a cutting surface of at least some cutters in the backup cutter row is covered by a portion of the blade. Enhanced support for cutters is provided against impact loading. |
申请公布号 |
BR112012002756(A2) |
申请公布日期 |
2016.05.24 |
申请号 |
BR20121102756 |
申请日期 |
2010.08.04 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
DAVID GAVIA;FLOYD C. FELDERHOFF;MATTHEW R. ISBELL;MICHAEL L. DOSTER |
分类号 |
E21B10/42;E21B10/54 |
主分类号 |
E21B10/42 |
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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