- 专利标题： Roller cone drill bits with optimized bearing structures
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申请号： US11950221申请日： 2007-12-04
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公开(公告)号： US09493990B2公开(公告)日： 2016-11-15
- 发明人: Shilin Chen , Ping C. Sui
- 申请人： Shilin Chen , Ping C. Sui
- 申请人地址： US TX Houston
- 专利权人： Halliburton Energy Services, Inc.
- 当前专利权人： Halliburton Energy Services, Inc.
- 当前专利权人地址： US TX Houston
- 代理机构： Baker Botts L.L.P.
- 主分类号： E21B10/22
- IPC分类号： E21B10/22 ; E21B10/16
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.
公开/授权文献
- US20080087471A1 ROLLER CONE DRILL BITS WITH OPTIMIZED BEARING STRUCTURES 公开/授权日：2008-04-17
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