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1. 发明申请

WO2010045164A2 DRILL BIT WITH CONTINUOUSLY SHARP EDGE CUTTING ELEMENTS 审中-公开
公开(公告)号：WO2010045164A2
公开(公告)日：2010-04-22
申请号：PCT/US2009060404
申请日：2009-10-13
申请人： BAKER HUGHES INC , WELCH ROBERT M , MCCLAIN ERIC E , SINOR ALLEN L
发明人： WELCH ROBERT M , MCCLAIN ERIC E , SINOR ALLEN L
IPC分类号： E21B10/46 , E21B10/48
CPC分类号： E21B10/56 , E21B10/43 , E21B2010/562
摘要： A method of optimizing drill bit design and an optimized drill bit for drilling a well into an earth formation comprising a bit body; a number of blades spaced around the bit body, each blade having a curved outer edge and a forward face; a first row of cutter pockets recessed into the face along the outer edge of each blade; a second group of cutter pockets recessed into the face of each blade offset from the first row; and a plurality of cutting elements, each cutting element being brazed into a different one of the cutter pockets.

2. 发明申请

WO2012109518A1 CUTTING STRUCTURES FOR FIXED CUTTER DRILL BIT AND OTHER DOWNHOLE CUTTING TOOLS 审中-公开
标题翻译：固定切割钻头和其他切割工具的切割结构
公开(公告)号：WO2012109518A1
公开(公告)日：2012-08-16
申请号：PCT/US2012/024609
申请日：2012-02-10
申请人： SMITH INTERNATIONAL, INC. , AZAR, Michael G. , DURAIRAJAN, Bala , KESHAVAN, Madapusi, K.
发明人： AZAR, Michael G. , DURAIRAJAN, Bala , KESHAVAN, Madapusi, K.
IPC分类号： E21B10/43 , E21B10/55 , E21B10/58
CPC分类号： E21B10/62 , E21B10/26 , E21B10/42 , E21B10/43 , E21B10/46 , E21B10/54 , E21B10/55 , E21B10/56 , E21B10/567 , E21B10/5673 , E21B10/627 , E21B10/633 , E21B2010/425 , E21B2010/545 , E21B2010/561 , E21B2010/562 , E21B2010/622 , E21B2010/624
摘要： A downhole cutting tool may include a tool body; a plurality of blades extending azimuthally from the tool body; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least two conical cutting elements comprising a substrate and a diamond layer having a conical cutting end, wherein at least one of the at least two conical cutting elements has a positive back rake angle, and at least one of the at least two conical cutting elements has a negative back rake angle.
摘要翻译：井下切削工具可以包括工具主体; 多个叶片，其从工具体方向延伸; 以及多个切割元件，所述多个切割元件设置在所述多个刀片上，所述多个切割元件包括：至少两个锥形切割元件，包括基底和具有锥形切割端的金刚石层，其中所述至少两个锥形切割元件具有正的后倾角，并且至少两个锥形切割元件中的至少一个具有负的后倾角。

3. 发明申请

WO2012109517A1 KERFING HYBRID DRILL BIT AND OTHER DOWNHOLE CUTTING TOOLS 审中-公开
标题翻译： KERFING混合钻头和其他卧式切割工具
公开(公告)号：WO2012109517A1
公开(公告)日：2012-08-16
申请号：PCT/US2012/024606
申请日：2012-02-10
申请人： SMITH INTERNATIONAL, INC. , AZAR, Michael, G. , DURAIRAJAN, Bala , KESHAVAN, Madapusi, K.
发明人： AZAR, Michael, G. , DURAIRAJAN, Bala , KESHAVAN, Madapusi, K.
IPC分类号： E21B10/43 , E21B10/55 , E21B10/58
CPC分类号： E21B10/62 , E21B10/26 , E21B10/42 , E21B10/43 , E21B10/46 , E21B10/54 , E21B10/55 , E21B10/56 , E21B10/567 , E21B10/5673 , E21B10/627 , E21B10/633 , E21B2010/425 , E21B2010/545 , E21B2010/561 , E21B2010/562 , E21B2010/622 , E21B2010/624
摘要： A drill bit for drilling a borehole in earth formations may include a bit body having a bit axis and a bit face;a plurality of blades extending radially along the bit face; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least one cutter comprising a substrate and a diamond table having a substantially planar cutting face; and at least two conical cutting elements comprising a substrate and a diamond layer having a conical cutting end, wherein in a rotated view of the plurality of cutting elements into a single plane, the at least one cutter is located a radial position from the bit axis that is intermediate the radial positions of the at least two conical cutting elements.
摘要翻译：用于在地层中钻孔的钻头可以包括具有钻头轴线和钻头面的钻头体;沿钻头面径向延伸的多个刀片; 以及设置在所述多个刀片上的多个切割元件，所述多个切割元件包括：至少一个切割器，包括基底和具有基本上平面的切割面的金刚石台面; 以及至少两个锥形切割元件，其包括基底和具有锥形切割端的金刚石层，其中在所述多个切割元件的旋转视图中成为单个平面，所述至少一个切割器位于距钻头轴线的径向位置其位于所述至少两个锥形切割元件的径向位置的中间。

4. 发明申请

WO2015111016A1 DRILL BIT FOR DRILLING A BOREHOLE 审中-公开
标题翻译：钻孔钻头钻孔
公开(公告)号：WO2015111016A1
公开(公告)日：2015-07-30
申请号：PCT/IB2015/050574
申请日：2015-01-26
申请人： TERCEL IP LIMITED
发明人： HAHATI, Abdelhakim , DESCHAMPS, Benoit
IPC分类号： E21B10/43 , E21B10/56
CPC分类号： E21B10/43 , E21B2010/562
摘要： This invention relates to a drill bit (1) for drilling a borehole in earth formation, comprising a bit body (2) having a central axis (3), a bit face (4) including a plurality of blades (6) with a plurality of cutter elements (7), (8) having a substantially planar cutting face (9) and a cutting tip for cutting the formation, wherein said cutter elements (7), (8) comprise at least one rounded cutter element (7) having a rounded cutting tip (10), and at least one pointed cutter element (8) having a pointed cutting tip (11). Preferably said substantially planar cutting surface (9) is mounted on a substrate (12) and is a polycrystalline diamond table or a cutting layer made of superabrasive materials including thermally stable diamond or cubic boron nitride. The invention also relates to the use of such a drill bit for drilling a plastic shale formation.
摘要翻译：本发明涉及一种用于在地层中钻孔的钻头（1），其包括具有中心轴线（3）的钻头体（2），具有多个叶片（6）的钻头面（4）具有基本上平面的切割面（9）和用于切割所述地层的切割尖端的切割器元件（7），（8），其中所述切割元件（7），（8）包括至少一个圆形切割元件（7）圆形切割尖端（10）和至少一个具有尖锐切割尖端（11）的尖锐切割器元件（8）。优选地，所述基本上平面的切割表面（9）安装在基底（12）上并且是多晶金刚石台或由包括热稳定金刚石或立方氮化硼的超级磨料材料制成的切割层。本发明还涉及这种钻头用于钻出塑料页岩层的用途。

5. 发明申请

WO2013119930A1 SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS 审中-公开
标题翻译：用于接地工具和包含这些切割元件的接地工具的形状切割元件
公开(公告)号：WO2013119930A1
公开(公告)日：2013-08-15
申请号：PCT/US2013/025318
申请日：2013-02-08
申请人： BAKER HUGHES INCORPORATED
发明人： BILEN, Juan, Miguel , SCOTT, Danny, E. , PATEL, Surech, G. , MATTHEWS, Oliver , NELMS, Derek, L , LYONS, Nicholas, J.
IPC分类号： E21B10/43 , E21B10/42 , E21B10/62
CPC分类号： E21B10/5673 , E21B10/00 , E21B10/08 , E21B10/42 , E21B10/43 , E21B10/46 , E21B10/54 , E21B10/55 , E21B10/58 , E21B2010/562
摘要： Cutting elements for an earth-boring tool include a substrate base and a cutting tip. The cutting tip may include a first generally conical surface, a second, opposite generally conical surface, a first flank surface extending between the first and second generally conical surfaces, and a second, opposite flank surface. In some embodiments, the cutting tip includes a central axis that is not co-linear with a longitudinal axis of the substrate base. In some embodiments, the cutting tip includes a surface defining a longitudinal end thereof that is relatively more narrow in a central region thereof than in a radially outer region thereof. Earth boring tools include a body and a plurality of such cutting elements attached thereto, at least one cutting element oriented to initially engage a formation with the first or second generally conical surface thereof. Methods of drilling a formation use such cutting elements and earth-boring tools.
摘要翻译：用于钻孔工具的切割元件包括基底和切割尖端。切割尖端可以包括第一大致圆锥形表面，第二相对的大致圆锥形表面，在第一和第二大致锥形表面之间延伸的第一侧面以及第二相对的侧面。在一些实施例中，切割尖端包括不与基底基体的纵向轴线共线的中心轴线。在一些实施例中，切割尖端包括限定其纵向端部的表面，其在中心区域比在其径向外部区域中相对更窄。地球钻孔工具包括主体和附接到其上的多个这样的切割元件，至少一个切割元件定向成初始地接合地层与其第一或第二大体圆锥形表面。钻探地层的方法使用这种切割元件和钻孔工具。

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