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1. 发明授权

US6119797A Single cone earth boring bit 有权
标题翻译：单锥地球钻头
公开(公告)号：US6119797A
公开(公告)日：2000-09-19
申请号：US173576
申请日：1998-10-15
申请人： Chunling Hong , Xuezhong Liu , Hongmei Huang , Heng Du
发明人： Chunling Hong , Xuezhong Liu , Hongmei Huang , Heng Du
IPC分类号： E21B10/08 , E21B17/10 , E21B10/14 , E21B10/16 , E21B10/50
CPC分类号： E21B17/1092 , E21B10/08
摘要： The invention discloses a single cone earth boring bit which is adapted to be used for boring in oil fields, mining and geological prospecting. The single cone earth boring bit is composed of a bit body (1), gauge blocks (2), active cutting gauge teeth (4), passive gauge teeth (3) and knobby cone (6) etc. On the knobby cone (6), there are inserted wear-resistant teeth intermittently or successively, so as to make the wear resistance of the bit cutting system to be matched with the service life of the bearing. At the same time, gauge blocks (2) are provided on the bit body which may be directly made on or welded to the bit body. On the gauge blocks (2), there are inserted common carbide or wear-resistant active cutting gauge teeth (4) and the passive gauge teeth (3) to enhance the gauge-protecting effect of the bit. Such a single cone earth boring bit can significantly increase the footage of the bit and reduce the cost for drilling.
摘要翻译：本发明公开了一种适用于油田镗孔，采矿和地质勘查的单锥钻地钻。单个锥形钻头由钻头体（1），量块（2），有效切割表齿（4），被动测量齿（3）和旋钮锥（6）等构成。在圆锥体（6）），间歇或连续地插入耐磨齿，以使钻头切削系统的耐磨性与轴承的使用寿命相匹配。同时，钻头体上设置有可以直接制成或焊接在钻头体上的钻头块（2）。在仪表块（2）上，插入普通碳化物或耐磨有源切割表齿（4）和被动测齿（3），以增强钻头的防护等级。这种单锥钻地钻可显着增加钻头的镜头，并降低钻孔成本。

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