发明授权
- 专利标题： External, divorced PDC bearing assemblies for hybrid drill bits
- 专利标题（中）： 用于混合钻头的外部PDC轴承组件
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申请号： US12883900申请日： 2010-09-16
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公开(公告)号： US09004198B2公开(公告)日： 2015-04-14
- 发明人: Ajay V. Kulkarni
- 申请人： Ajay V. Kulkarni
- 申请人地址： US TX Houston
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： US TX Houston
- 代理机构： Sutton McAughan Deaver PLLC
- 主分类号： E21B10/25
- IPC分类号： E21B10/25 ; E21B10/22 ; E21B10/14 ; E21B10/20
摘要：
A hybrid-type earth boring drill bit is described having fixed cutting blades and rolling cones with cutting elements, wherein the rolling cones are associated with a spindle assembly that may be optionally divorced from the head pin assembly, and which includes bearing members that further include a plurality of polycrystalline diamond elements.
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