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1.发明授权公开(公告)号：US08127863B2
公开(公告)日：2012-03-06
申请号：US12330633
申请日：2008-12-09
摘要： A drill bit for drilling a borehole in earthen formations comprising a bit body having a bit axis and a bit face. In addition, the drill bit comprises a primary blade extending radially along the bit face, the primary blade including a cutter-supporting surface that defines a blade profile in rotated profile view extending from the bit axis to an outer radius of the bit body. The blade profile is continuously contoured and includes a plurality of concave regions. Further, the drill bit comprises a plurality of cutter elements mounted to the cutter-supporting surface of the primary blade. Each cutter element on the primary blade has a forward-facing cutting face with a cutting edge adapted to penetrate and shear the earthen formation.
摘要翻译： 一种用于在土层中钻孔的钻头，包括具有钻头轴线和钻头面的钻头体。 此外，钻头包括沿钻头面径向延伸的主刀片，主刀片包括切割器支撑表面，刀片支撑表面限定了从钻头轴线延伸到钻头体的外半径的旋转轮廓图中的刀片轮廓。 刀片轮廓连续成型并包括多个凹入区域。 此外，钻头包括安装到主叶片的切割器支撑表面的多个切割器元件。 主叶片上的每个切割元件具有前向切割面，其具有适于穿透和剪切土层的切割边缘。
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2.发明申请公开(公告)号：US20120186879A1
公开(公告)日：2012-07-26
申请号：US13412242
申请日：2012-03-05
摘要： A drill bit for drilling a borehole in earthen formations comprising a bit body having a bit axis and a bit face. In addition, the drill bit comprises a primary blade extending radially along the bit face, the primary blade including a cutter-supporting surface that defines a blade profile in rotated profile view extending from the bit axis to an outer radius of the bit body. The blade profile is continuously contoured and includes a plurality of concave regions. Further, the drill bit comprises a plurality of cutter elements mounted to the cutter-supporting surface of the primary blade. Each cutter element on the primary blade has a forward-facing cutting face with a cutting edge adapted to penetrate and shear the earthen formation.
摘要翻译： 一种用于在土层中钻孔的钻头，包括具有钻头轴线和钻头面的钻头体。 此外，钻头包括沿钻头面径向延伸的主刀片，主刀片包括切割器支撑表面，刀片支撑表面限定了从钻头轴线延伸到钻头体的外半径的旋转轮廓图中的刀片轮廓。 刀片轮廓连续成型并包括多个凹入区域。 此外，钻头包括安装到主叶片的切割器支撑表面的多个切割器元件。 主叶片上的每个切割元件具有前向切割面，其具有适于穿透和剪切土层的切割边缘。
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3.发明授权公开(公告)号：US08689908B2
公开(公告)日：2014-04-08
申请号：US13412242
申请日：2012-03-05
IPC分类号： E21B10/42
摘要： A drill bit for drilling a borehole in earthen formations comprising a bit body having a bit axis and a bit face. In addition, the drill bit comprises a primary blade extending radially along the bit face, the primary blade including a cutter-supporting surface that defines a blade profile in rotated profile view extending from the bit axis to an outer radius of the bit body. The blade profile is continuously contoured and includes a plurality of concave regions. Further, the drill bit comprises a plurality of cutter elements mounted to the cutter-supporting surface of the primary blade. Each cutter element on the primary blade has a forward-facing cutting face with a cutting edge adapted to penetrate and shear the earthen formation.
摘要翻译： 一种用于在土层中钻孔的钻头，包括具有钻头轴线和钻头面的钻头体。 此外，钻头包括沿钻头面径向延伸的主刀片，主刀片包括切割器支撑表面，刀片支撑表面限定了从钻头轴线延伸到钻头体的外半径的旋转轮廓图中的刀片轮廓。 刀片轮廓连续成型并包括多个凹入区域。 此外，钻头包括安装到主叶片的切割器支撑表面的多个切割器元件。 主叶片上的每个切割元件具有前向切割面，其具有适于穿透和剪切土层的切割边缘。
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公开(公告)号：US20090145663A1
公开(公告)日：2009-06-11
申请号：US12330633
申请日：2008-12-09
摘要： A drill bit for drilling a borehole in earthen formations comprising a bit body having a bit axis and a bit face. In addition, the drill bit comprises a primary blade extending radially along the bit face, the primary blade including a cutter-supporting surface that defines a blade profile in rotated profile view extending from the bit axis to an outer radius of the bit body. The blade profile is continuously contoured and includes a plurality of concave regions. Further, the drill bit comprises a plurality of cutter elements mounted to the cutter-supporting surface of the primary blade. Each cutter element on the primary blade has a forward-facing cutting face with a cutting edge adapted to penetrate and shear the earthen formation.
摘要翻译： 一种用于在土层中钻孔的钻头，包括具有钻头轴线和钻头面的钻头体。 此外，钻头包括沿钻头面径向延伸的主刀片，主刀片包括切割器支撑表面，刀片支撑表面限定了从钻头轴线延伸到钻头体的外半径的旋转轮廓图中的刀片轮廓。 刀片轮廓连续成型并包括多个凹入区域。 此外，钻头包括安装到主叶片的切割器支撑表面的多个切割器元件。 主叶片上的每个切割元件具有前向切割面，其具有适于穿透和剪切土层的切割边缘。
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公开(公告)号：US08833492B2
公开(公告)日：2014-09-16
申请号：US12247959
申请日：2008-10-08
IPC分类号： E21B10/567 , E21B10/55
CPC分类号： E21B10/567 , E21B10/42 , E21B10/55 , E21B10/5673
摘要： A PDC cutter includes a body formed from a substrate material, an ultrahard layer disposed on the body, and a concave cutting face perpendicular to an axis of the body. A PDC cutter includes a body formed from a substrate material, an ultrahard layer disposed on the body, and a non-planar cutting face perpendicular to an axis of the body, the cutting face including a circumferential concave portion, and an inner protrusion portion.
摘要翻译： PDC切割器包括由基底材料形成的主体，设置在主体上的超硬层以及垂直于主体的轴线的凹形切割面。 PDC切割器包括由基板材料形成的主体，设置在主体上的超硬层，以及垂直于主体的轴线的非平面切割面，切割面包括周向凹部和内部突出部。
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公开(公告)号：US20100018780A1
公开(公告)日：2010-01-28
申请号：US12507730
申请日：2009-07-22
CPC分类号： E21B10/55
摘要： A drill bit for drilling a borehole in a formation, the drill bit including a bit body having a bit face including a cone region, a nose region, a shoulder region, and a gage region, at least one disjointed blade disposed on the bit face, the disjointed blade including a first section beginning proximate a central axis of the bit and extending less than full gage, and a second section beginning a selected distance from the central axis and extending to full gage, and a plurality of cutting elements mounted on the at least one disjointed blade is disclosed.
摘要翻译： 一种用于在地层中钻孔的钻头，所述钻头包括具有包括锥形区域，鼻部区域，肩部区域和计量区域的钻头面的钻头体，设置在钻头面上的至少一个不相交刀片 ，所述不相交的刀片包括从所述钻头的中心轴线附近开始并且延伸小于全量具的第一部分，以及从所述中心轴线开始延伸到全量具的选定距离的第二部分，以及安装在所述切割元件上的多个切割元件 公开了至少一个不相交的叶片。
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公开(公告)号：US08100202B2
公开(公告)日：2012-01-24
申请号：US12416202
申请日：2009-04-01
IPC分类号： E21B10/26
CPC分类号： E21B17/1092 , E21B10/43
摘要： In an embodiment, a drill bit for drilling a borehole comprises a bit body having a bit axis and a bit face. In addition, the drill bit comprises a primary blade extending radially along the bit face. Further, the drill bit comprises a plurality of primary cutter elements mounted to the primary blade. The primary blade is free of backup cutter elements. Still further, the drill bit comprises a secondary blade extending radially along the bit face. Moreover, the drill bit comprises a plurality of primary cutter elements mounted to the secondary blade. In addition, the drill bit comprises a first plurality of backup cutter elements mounted to the secondary blade in a first backup row that trails the primary row. Further, the drill bit comprises a second plurality of backup cutter elements mounted to the secondary blade in a second backup row that trails the first backup row.
摘要翻译： 在一个实施例中，用于钻孔的钻头包括具有钻头轴线和钻头面的钻头体。 此外，钻头包括沿钻头面径向延伸的主刀片。 此外，钻头包括安装到主叶片的多个主切割器元件。 主刀片没有备用刀具元件。 此外，钻头包括沿着钻头面径向延伸的次级刀片。 此外，钻头包括安装到次级叶片的多个主切割器元件。 此外，钻头包括在第一备用行中安装到次级叶片上的第一多个备用切割器元件，该第一备用行跟踪主列。 此外，钻头包括在第二备用行中安装到次级叶片上的第二多个备用切割器元件，该第二备用行跟踪第一备用行。
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公开(公告)号：US20100059287A1
公开(公告)日：2010-03-11
申请号：US12205778
申请日：2008-09-05
IPC分类号： E21B10/36
CPC分类号： E21B10/5673
摘要： A polycrystalline diamond compact (“PDCD”) cutter includes a cylindrical body formed from a substrate material, an ultrahard layer disposed on the cylindrical body, and a cutting face perpendicular to an axis of the cylindrical body, wherein the cutting face includes two or more lobes and wherein the radius of at least one lobe is between 50 and 90 percent of the radius of the cylindrical body. A PDC cutter includes a substrate, and a cutting face perpendicular to an axis of the substrate, wherein the cross-section of the cutting face comprises multiple lobes, and the cross-section of the substrate is substantially circular.
摘要翻译： 多晶金刚石切割器（“PDCD”）切割器包括由基底材料形成的圆柱体，设置在圆柱体上的超硬层和垂直于圆柱体的轴线的切割面，其中切割面包括两个或更多个 并且其中至少一个凸角的半径在圆柱体的半径的50％至90％之间。 PDC切割器包括基板和垂直于基板的轴线的切割面，其中切割面的横截面包括多个凸角，并且基板的横截面基本上为圆形。
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9.发明申请Drill Bit Cutting Structure and Methods to Maximize Depth-0f-Cut For Weight on Bit Applied 有权钻头切割结构和方法，最大限度地减少施加的重量公开(公告)号：US20090145669A1
公开(公告)日：2009-06-11
申请号：US12329163
申请日：2008-12-05
摘要： A drill bit for drilling a borehole in earthen formations comprises a bit body including a cone region, a shoulder region, and a gage region. In addition the bit comprises a first primary blade and a second primary blade. Further, the bit comprises a plurality of primary cutter elements mounted to the first primary blade in different radial positions. Still further, the bit comprises a plurality of primary cutter elements mounted to the second primary blade in different radial positions. Moreover, a first primary cutter element of the plurality of primary cutter elements on the first primary blade and a first primary cutter element of the plurality of primary cutter elements on the second primary blade are each positioned in the cone region and are redundant. The shoulder region has a total cutter redundancy percentage that is less than a total cutter redundancy percentage in the cone region.
摘要翻译： 用于在土层中钻孔的钻头包括具有锥体区域，肩部区域和计量区域的钻头体。 此外，钻头包括第一主叶片和第二主叶片。 此外，钻头包括以不同的径向位置安装到第一主叶片的多个主切割器元件。 此外，该钻头包括以不同的径向位置安装到第二主叶片的多个主切割器元件。 此外，第一主叶片上的多个主切割元件的第一主切割元件和第二主叶片上的多个主切割元件的第一主切割元件分别位于锥形区域中并且是多余的。 肩部区域的总切割器冗余百分比小于锥形区域中的总切割器冗余百分比。
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公开(公告)号：US20080302575A1
公开(公告)日：2008-12-11
申请号：US11760933
申请日：2007-06-11
IPC分类号： E21B10/00
CPC分类号： E21B10/43
摘要： A drill bit for drilling a borehole comprises a bit body having a bit face. In addition, the drill bit comprises a plurality of primary blades. Further, the drill bit comprises a plurality of primary cutter elements mounted to each primary blade and at least one backup cutter element mounted to each primary blade. Still further, the drill bit comprises a plurality of secondary blades. Moreover, the drill bit comprises a plurality of primary cutter elements mounted to each secondary blade. The ratio of the total number of backup cutter elements mounted to the plurality of primary blades to the total number of backup cutter elements mounted to the plurality of secondary blades is greater than 2.0. Each backup cutter element on each primary blade has substantially the same radial position as one of the primary cutter elements on the same primary blade.
摘要翻译： 用于钻孔的钻头包括具有钻头面的钻头体。 另外，钻头包括多个主叶片。 此外，钻头包括安装到每个主叶片的多个主切割器元件和安装到每个主叶片的至少一个支撑切割器元件。 此外，钻头包括多个次级叶片。 此外，钻头包括安装到每个次级叶片的多个主切割器元件。 安装到多个主叶片的备用切割器元件的总数与安装到多个辅助叶片的备用切割器元件的总数之比大于2.0。 每个主叶片上的每个支撑切割器元件具有与相同主叶片上的主切割器元件之一基本相同的径向位置。
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