发明名称 |
EXTERNAL, DIVORCED PDC BEARING ASSEMBLIES FOR HYBRID DRILL BITS |
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. |
申请公布号 |
WO2011035051(A2) |
申请公布日期 |
2011.03.24 |
申请号 |
WO2010US49159 |
申请日期 |
2010.09.16 |
申请人 |
BAKER HUGHES INCORPORATED;KULKARNI, AJAY V. |
发明人 |
KULKARNI, AJAY V. |
分类号 |
E21B10/14 |
主分类号 |
E21B10/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|