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1. 发明授权

US08579051B2 Anti-tracking spear points for earth-boring drill bits 有权
标题翻译：防钻探钻头的反追迹点
公开(公告)号：US08579051B2
公开(公告)日：2013-11-12
申请号：US12852165
申请日：2010-08-06
申请人： Robert J. Buske , James Florey
发明人： Robert J. Buske , James Florey
IPC分类号： E21B10/16
CPC分类号： E21B10/16
摘要： Described herein are roller cone drill bits and modified roller cones for use in drilling subterranean earth formations, and more specifically roller cone drill bits and roller cones having optimized spear point designs and blade orientations on at least one of the roller cones for reduced tracking and/or increased drilling performance during bit use. The roller cone drill bits include a bit body with a longitudinal axis, one or more bit legs depending from the body, and at least one roller cone attached to each of the bit legs and able to rotate with respect to the bit body, wherein at least one of the roller cones includes a spear point at the cone apex having two or more cutting blades, the cutting blades being oriented at a variety of non-equal, asymmetric angles about a central cone axis with respect to each other, such that tracking during drilling using the drill bit is minimized or eliminated.
摘要翻译：这里描述的是用于钻探地下地层的辊锥钻头和改进的滚筒锥，更具体地说，具有优化的矛尖设计的滚子锥钻头和滚子锥体以及在至少一个滚筒锥上的叶片取向用于减少跟踪和/ 或在钻头使用期间提高钻井性能。滚子锥钻头包括具有纵向轴线的钻头体，从主体悬垂的一个或多个钻头刀柄，以及附接到每个钻头刀腿并且能够相对于钻头本体旋转的至少一个滚子锥体，其中在至少一个滚子锥体包括在具有两个或更多个切割刀片的圆锥顶点处的矛尖点，切割刀片以关于中心锥形轴线相对于彼此的各种不相等的非对称角度定向，使得跟踪在使用钻头的钻孔期间最小化或消除。

2. 发明申请

US20110031021A1 Anti-Tracking Spear Points for Earth-Boring Drill Bits 有权
标题翻译：地球钻孔钻头的反追迹点
公开(公告)号：US20110031021A1
公开(公告)日：2011-02-10
申请号：US12852165
申请日：2010-08-06
申请人： Robert J. Buske , James Florey
发明人： Robert J. Buske , James Florey
IPC分类号： E21B10/00 , E21B7/00
CPC分类号： E21B10/16
摘要： Described herein are roller cone drill bits and modified roller cones for use in drilling subterranean earth formations, and more specifically roller cone drill bits and roller cones having optimized spear point designs and blade orientations on at least one of the roller cones for reduced tracking and/or increased drilling performance during bit use. The roller cone drill bits include a bit body with a longitudinal axis, one or more bit legs depending from the body, and at least one roller cone attached to each of the bit legs and able to rotate with respect to the bit body, wherein at least one of the roller cones includes a spear point at the cone apex having two or more cutting blades, the cutting blades being oriented at a variety of non-equal, asymmetric angles about a central cone axis with respect to each other, such that tracking during drilling using the drill bit is minimized or eliminated.
摘要翻译：这里描述的是用于钻探地下地层的辊锥钻头和改进的滚筒锥，更具体地说，具有优化的矛尖设计的滚子锥钻头和滚子锥体以及在至少一个滚筒锥上的叶片取向用于减少跟踪和/ 或在钻头使用期间提高钻井性能。滚子锥钻头包括具有纵向轴线的钻头体，从主体悬垂的一个或多个钻头刀柄，以及附接到每个钻头刀腿并且能够相对于钻头本体旋转的至少一个滚子锥体，其中在至少一个滚子锥体包括在具有两个或更多个切割刀片的圆锥顶点处的矛尖点，切割刀片以关于中心锥形轴线相对于彼此的各种不相等的非对称角度定向，使得跟踪在使用钻头的钻孔期间最小化或消除。

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