-
公开(公告)号：US20110212303A1
公开(公告)日：2011-09-01
申请号：US12672927
申请日：2008-08-14
CPC分类号： E21B10/567 , B22F2005/001 , C22C26/00 , Y10T428/24488 , Y10T428/2457 , Y10T428/24612 , Y10T428/2495
摘要： A PCD cutting element for use in earth boring drill bits where the interstices remote from the working surface are filled with a catalyzing material and the interstices adjacent to the working surface are substantially free of the catalyzing material is described. An intermediate region between the substantially free portion and filled portion has a plurality of generally conically sectioned catalyst-free projections which taper down, extending to a second depth from the planar working surface, preferably about 0.5 times or more of the first depth.
摘要翻译： 描述了用于钻孔钻头的PCD切割元件，其中远离工作表面的间隙填充有催化材料，并且与工作表面相邻的间隙基本上不含催化材料。 基本上自由部分和填充部分之间的中间区域具有多个大致圆锥形截面的无催化剂的突起，其向下渐缩，从平面工作表面延伸到第二深度，优选地为第一深度的约0.5倍或更多。
-
公开(公告)号：US08721752B2
公开(公告)日：2014-05-13
申请号：US12672927
申请日：2008-08-14
CPC分类号： E21B10/567 , B22F2005/001 , C22C26/00 , Y10T428/24488 , Y10T428/2457 , Y10T428/24612 , Y10T428/2495
摘要： A PCD cutting element for use in earth boring drill bits where die interstices remote from the working surface are filled with a catalyzing material and the interstices adjacent to the working surface are substantially free of the catalyzing material is described. An intermediate region between the substantially free portion and filled portion has a plurality of generally conically sectioned catalyst-free projections which taper down, extending to a second depth from the planar working surface, preferably about 0.5 times or more of the first depth.
摘要翻译： 描述了用于钻孔钻头的PCD切割元件，其中远离工作表面的模具间隙填充有催化材料，并且与工作表面相邻的间隙基本上不含催化材料。 基本上自由部分和填充部分之间的中间区域具有多个大致圆锥形截面的无催化剂的突起，其向下渐缩，从平面工作表面延伸到第二深度，优选地为第一深度的约0.5倍或更多。
-
公开(公告)号：US07308955B2
公开(公告)日：2007-12-18
申请号：US11276978
申请日：2006-03-20
IPC分类号： E21B17/10
CPC分类号： E21B17/1092 , E21B17/1078
摘要： A stabilizer comprises a body having first and second ends, each of which is formed with a respective connector means, the body having an outer wall upon which is formed a plurality of the upstanding blades radially outer surfaces of which define gauge pads, flow channels being defined between adjacent ones of the blades, and at least one bridging region interconnecting two adjacent ones of the blades to form an enclosed passage communicating with an associated one of the flow channels, the bridging region having a surface defining part of an outer gauge surface of the stabilizer, the at least one bridging region being located intermediate and spaced from the first and second ends.
摘要翻译： 稳定器包括具有第一和第二端部的主体，每个主体形成有相应的连接器装置，主体具有外壁，多个直立的叶片形成有多个直立的叶片，径向外表面限定了规格垫，流动通道为 限定在相邻的叶片之间，以及至少一个桥接区域，其互连两个相邻的叶片，以形成与相关的一个流动通道连通的封闭通道，桥接区域具有限定部分外表面的外表面的表面 所述稳定器，所述至少一个桥接区域位于所述第一端和所述第二端的中间和间隔开。
-
公开(公告)号：US07318492B2
公开(公告)日：2008-01-15
申请号：US11161767
申请日：2005-08-16
CPC分类号： E21B10/46 , E21B7/064 , E21B17/1092
摘要： A drill bit for drilling a borehole with a steerable drilling system, the drill bit comprising a longitudinal axis, and a cutting profile with a leading face section blended with a curved region into a tapered gauge region having a tapered gauge profile. The tapered gauge region being tapered with respect to the longitudinal axis determined by the steerable drilling system. The cutting profile and the gauge profile lie wholly within a bit profile envelope made up of a three dimensional surface of two complimentary conical sections set at the tilt angle and separated by and blended with a rounded section which forms an outermost diameter of the bit profile envelope. The rounded section has a diameter substantially equal to a maximum allowable API diameter for the drill bit, and further has a radius of curvature substantially equal to one-half the diameter.
摘要翻译： 一种钻头，其具有可操纵钻孔系统的钻孔，所述钻头包括纵向轴线，以及切割轮廓，所述切割轮廓具有与弯曲区域共混的前表面部分，所述锥形区域具有锥形量规轮廓。 锥形表面区域相对于由可转向钻井系统确定的纵向轴线是锥形的。 切割轮廓和尺寸轮廓完全位于由倾斜角设置的两个互补锥形部分的三维表面构成的位轮廓外壳中，并且由圆形部分分开并与其形成圆形部分，该圆形部分形成钻头轮廓包络线的最外径 。 圆形部分的直径基本上等于钻头的最大允许API直径，并且还具有基本上等于直径的一半的曲率半径。
-
-
-
搜索结果
4 条记录 (耗时 0.028 秒)
