发明名称 |
Cutting element insert for backup cutters in rotary drill bits, rotary drill bits so equipped, and methods of manufacture therefor |
摘要 |
Cutter inserts for rotary drill bits include a cutter insert body having a cutter recess configured to receive a backup cutter therein. Rotary drill bits for drilling a subterranean formation include at least one such cutter insert affixed to a blade rotationally behind a cutter pocket for a primary cutter. Methods of manufacturing such drill bits include providing a bit body having a plurality of blades. A cutter insert is provided and secured within a cutter insert recess formed in the face of a blade. A backup cutter is secured within a cutter recess of the cutter insert.
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申请公布号 |
US7594554(B2) |
申请公布日期 |
2009.09.29 |
申请号 |
US20070709925 |
申请日期 |
2007.02.21 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
SCHWEFE THORSTEN;GANZ THOMAS |
分类号 |
E21B10/46;E21B10/56 |
主分类号 |
E21B10/46 |
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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