发明名称 |
ROLLER CUTTER DRILL BIT WITH MIXED BEARING TYPES |
摘要 |
<p>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.</p> |
申请公布号 |
WO2015050805(A1) |
申请公布日期 |
2015.04.09 |
申请号 |
WO2014US57981 |
申请日期 |
2014.09.29 |
申请人 |
VAREL INTERNATIONAL, IND., L.P. |
发明人 |
KING, WILLIAM, W. |
分类号 |
E21B10/08;E21B10/22 |
主分类号 |
E21B10/08 |
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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