发明名称 |
Roller cone drill bits with optimized bearing structures |
摘要 |
A roller cone drill bit may include optimally designed bearing structures and cutting structures. The roller cone drill bit may include three cone assemblies rotatably mounted on respective spindles via respective bearing structures. Each cone assembly may have a respective cutting structure with a minimal moment center located along each respective axis of rotation. Each respective bearing structure has a center point located proximate each respective minimal moment center. |
申请公布号 |
GB0516638(D0) |
申请公布日期 |
2005.09.21 |
申请号 |
GB20050016638 |
申请日期 |
2005.08.12 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
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分类号 |
E21B10/16;E21B10/22;E21B41/00 |
主分类号 |
E21B10/16 |
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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