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1.发明申请METHODS OF MANUFACTURING AND REPAIRING ROTARY DRILL BITS INCLUDING SUPPORT ELEMENTS AFFIXED TO THE BIT BODY AT LEAST PARTIALLY DEFINING CUTTER POCKET RECESSES 有权制造和修理旋转钻头位置的方法，其中包括支撑元件与底部部件至少部分定义切割器口袋公开(公告)号：US20090158898A1
公开(公告)日：2009-06-25
申请号：US12395016
申请日：2009-02-27
CPC分类号： E21B10/55 , E21B10/573 , Y10T29/49721 , Y10T29/49737
摘要： A rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element.
摘要翻译： 用于钻探地层的旋转牵引钻头包括固定到钻头体上的多个支撑元件，每个支撑元件形成切割元件凹槽的至少一部分。 多个切割元件中的每一个具有基本上圆柱形的主体并且至少部分地设置在切割器凹槽内。 每个切割元件的基本圆柱形主体的至少一部分直接固定到钻头体的基本上弓形表面的至少一部分上。 每个切割元件的基本平坦的表面的至少一部分配合地接合支撑元件的基本平坦的表面的至少一部分。
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公开(公告)号：US20090020339A1
公开(公告)日：2009-01-22
申请号：US11879974
申请日：2007-07-18
IPC分类号： E21B10/46
CPC分类号： E21B10/43 , E21B10/633
摘要： A cutting element for use with a drill bit includes a substrate having a longitudinal axis, a lateral surface substantially symmetric about the longitudinal axis and one or more key elements coupled to the lateral surface. The lateral surface lies between an insertion end and a cutting end of the substrate. The one or more key elements are substantially axially aligned with the longitudinal axis and configured to selectively rotationally locate the substrate in a pocket. A drill bit configured for retaining a cutting element having one or more key elements is also disclosed.
摘要翻译： 用于钻头的切割元件包括具有纵向轴线的基底，围绕纵向轴线大致对称的侧表面以及联接到侧面的一个或多个关键元件。 侧表面位于基片的插入端和切割端之间。 一个或多个关键元件基本上与纵向轴线对准并且被配置为选择性地将基板旋转定位在口袋中。 还公开了一种用于保持具有一个或多个关键元件的切割元件的钻头。
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公开(公告)号：US20090008155A1
公开(公告)日：2009-01-08
申请号：US12138891
申请日：2008-06-13
IPC分类号： E21B10/43
CPC分类号： E21B10/54 , E21B10/55 , E21B10/5673 , E21B10/573
摘要： A drag bit having cutting elements, wherein the cross section of the cutting elements is an oval shape, wherein in one embodiment the major axis is perpendicular to the surface of the drag bit blade. A method is also included, wherein the method comprises using a milling bit having an oval cross section that thereby produces pockets in the drag bit blades for receiving the oval shaped cutting elements. Use of the oval bit also results in a half oval formed at the closed end of the pocket.
摘要翻译： 具有切割元件的拖曳钻头，其中所述切割元件的横截面为椭圆形，其中在一个实施例中，所述长轴垂直于所述犁刀刃的表面。 还包括一种方法，其中该方法包括使用具有椭圆形横截面的研磨钻头，从而在拖曳钻头刀片中产生用于接收椭圆形切割元件的凹坑。 使用椭圆形的钻头也会形成在口袋封闭端形成的半椭圆形。
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