发明申请
- 专利标题： ROLLER CUTTER DRILL BIT WITH MIXED BEARING TYPES
- 专利标题（中）： 滚筒切割机钻头与混合轴承类型
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申请号： US14496877申请日： 2014-09-25
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公开(公告)号： US20150090501A1公开(公告)日： 2015-04-02
- 发明人: William W. King
- 申请人： Varel International Ind., L.P.
- 申请人地址： US TX Carrollton
- 专利权人： VAREL INTERNATIONAL IND., L.P.
- 当前专利权人： VAREL INTERNATIONAL IND., L.P.
- 当前专利权人地址： US TX Carrollton
- 主分类号： E21B10/16
- IPC分类号： E21B10/16 ; B23P15/28 ; E21B10/22
摘要：
A roller cutter drill bit with mixed bearing types includes a bit body with at least one journal facet and a cavity facet. A cavity extends into the bit body from the cavity facet. The bit body is configured to rotate about a bit axis during drilling. A journal extends outward from the at least one journal facet. A first rotatable cutter that supports a first plurality of cutting structures has a journal portion received by the cavity. A second rotatable cutter that supports a second plurality of cutting structures has a cavity portion that is receives the journal.
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