公开(公告)号：US20070181348A1

公开(公告)日：2007-08-09

申请号：US10558491

申请日：2004-05-27

申请人： Brett Lancaster ,  Bronwyn Roberts ,  Imraan Parker ,  Klaus Tank ,  Roy Achilles ,  Clement Van Der Riet

发明人： Brett Lancaster ,  Bronwyn Roberts ,  Imraan Parker ,  Klaus Tank ,  Roy Achilles ,  Clement Van Der Riet

IPC分类号： E21B10/62

CPC分类号： E21B10/46 ,  B24D18/00 ,  B24D99/005 ,  C22C26/00 ,  E21B10/567 ,  E21B10/5735 ,  Y10T408/81

摘要： A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The non-planar interface typically has a cruciform configuration. The polycrystalline diamond has a high wear-resistance, and has a region adjacent the working surface lean in catalysing material and a region rich in catalysing material. The region lean in catalysing material extends to a depth of 40 to 90 microns, which is much shallower than in the prior art. Notwithstanding the shallow region lean in catalysing material, the polycrystalline diamond cutters have a wear resistance, impact strength and cutter life comparable to that of prior art cutter, but requiring only 20% of the treatment times of the prior art cutters.

摘要翻译： 多晶金刚石研磨元件，特别是切割元件，包括沿着非平面界面结合到基底，特别是硬质合金基底的多晶金刚石台。 非平面界面通常具有十字形构造。 多晶金刚石具有高耐磨性，并且具有邻近工作表面的贫乏催化材料的区域和富含催化材料的区域。 在催化材料中倾斜的区域延伸到40至90微米的深度，其比现有技术浅得多。 尽管在催化材料中较浅的区域，多晶金刚石切割器具有与现有技术切割机相当的耐磨性，冲击强度和切割寿命，但仅需要现有技术切割器的20％的处理时间。

公开(公告)号：US20070017710A1

公开(公告)日：2007-01-25

申请号：US10546541

申请日：2004-02-24

申请人： Roy Achilles ,  Klaus Tank ,  Imraan Parker

发明人： Roy Achilles ,  Klaus Tank ,  Imraan Parker

IPC分类号： E21B10/46

CPC分类号： E21B10/43 ,  E21B10/5735

摘要： A rotary drag bit comprises a bit body and a plurality of blades extending radially away from the bit body, each blade including a cutting assembly. Each cutting assembly has a plurality of primary cutters orientated in the direction of rotation of the drill bit for drilling or boring into a subterranean rock formation, and a plurality of secondary or brute cutters located behind the primary cutters in relation to the direction of rotation of the drag bit. The invention is concerned primarily with the secondary cutters, which comprise a layer of superabrasive material, such as PCD, PCBN or CVD diamond, bonded to a support substrate. The interface between the superabrasive layer and the substrate has a stepped region that provides the cutter with a skirt or hoop of superabrasive extending into the substrate. The secondary cutter is orientated in use to present a bearing surface to the rock formation and a secondary cutting edge in the direction of rotation of the rotary bit.

摘要翻译： 旋转牵引钻头包括钻头体和从钻头体径向延伸的多个刀片，每个刀片包括切割组件。 每个切割组件具有沿着钻头的旋转方向定向的多个初级切割器，用于钻孔或钻孔到地下岩层中，以及多个次级或暴力切割器，其位于主切割器后面相对于旋转方向 拖拽位。 本发明主要涉及二次切割器，二次切割器包括结合到支撑基底上的超级磨料材料层，例如PCD，PCBN或CVD金刚石。 超研磨层和基底之间的界面具有阶梯区域，其向切割器提供延伸到基底中的超级磨料的裙部或箍。 二次切割器在使用中定向以向岩层提供支承表面，并且在旋转钻头的旋转方向上具有次切削刃。

公开(公告)号：US20060144621A1

公开(公告)日：2006-07-06

申请号：US10533046

申请日：2003-09-12

申请人： Klaus Tank ,  Raymond Chapman ,  Roy Achilles

发明人： Klaus Tank ,  Raymond Chapman ,  Roy Achilles

IPC分类号： E21B7/04

CPC分类号： E21B10/5676 ,  E21B29/06

摘要： A tool insert comprises a substrate (40), a layer of ultra-hard abrasive material (52) bonded to the substrate and presenting a primary cutting edge (54) for the tool insert, and a protective layer (56) bonded to the ultra-hard abrasive material so as to protect the primary cutting edge thereof. The protective layer provides a secondary cutting edge (58) for the tool insert, the depth of the protective layer being selected so as to be sufficient to protect the primary cutting edge whilst cutting, milling or drilling a window through a first substance, such as a casing or lining of a borehole or shaft, but to expose the primary cutting edge upon encountering a second substance, such as a rockbed. The invention extends to a method of drilling a horizontal or angled hole in a sub-terranean rock formation using a rotary drill string and bit incorporating a tool insert of the invention.

摘要翻译： 工具插入件包括基底（40），结合到基底的超硬研磨材料层（52），并且呈现用于刀具插入件的主切削刃（54）以及粘合到超硬质材料的保护层（56） 硬磨料，以保护其主切削刃。 保护层提供用于工具插入件的辅助切割边缘（58），保护层的深度被选择为足以保护主切削刃，同时通过第一物质切割，铣削或钻孔，例如 钻孔或轴的套管或衬套，但是在遇到第二物质（例如岩石）时露出主切割刃。 本发明延伸到使用旋转钻柱和包含本发明的工具插入件的钻头钻入地下岩层中的水平或倾斜孔的方法。

公开(公告)号：US20060260850A1

公开(公告)日：2006-11-23

申请号：US10549393

申请日：2004-03-12

申请人： Bronwyn Roberts ,  Geoffrey Davies ,  Roy Achilles

发明人： Bronwyn Roberts ,  Geoffrey Davies ,  Roy Achilles

IPC分类号： E21B10/46

CPC分类号： E21B10/567

摘要： A tool insert comprises a working layer of ultra-hard abrasive, particularly PCD, bonded to a substrate along an interface. The working layer presents a working surface and a periphery around the working surface which provides a cutting edge for the insert. The working layer of ultra-hard abrasive has a first region extending into the layer from the working surface, and a second region in contact with the first region, the wear resistance of the first region being less than that of the second region. The wear resistance of the first region is between 50% and 95% of that of the second region, preferably between 60% and 90%, most preferably between 70% and 89%.

摘要翻译： 工具插入件包括沿着界面结合到基底的超硬磨料的工作层，特别是PCD。 工作层具有工作表面和围绕工作表面的周边，为刀片提供切削刃。 超硬磨料的工作层具有从工作表面延伸到层中的第一区域和与第一区域接触的第二区域，第一区域的耐磨性小于第二区域的耐磨性。 第一区域的耐磨性为第二区域的耐磨性的50％至95％，优选为60％至90％，最优选为70％至89％。

公开(公告)号：US20070039762A1

公开(公告)日：2007-02-22

申请号：US10568788

申请日：2005-05-11

申请人： Roy Achilles

发明人： Roy Achilles

IPC分类号： E21B10/36

CPC分类号： B23B27/148 ,  B23B2226/315 ,  C23C30/005

摘要： A polycrystalline diamond abrasive cutting element consists generally of a layer of high grade polycrystalline diamond bonded to a cemented carbide substrate. The polycrystalline diamond layer has a working surface and an outer peripheral surface and is characterized by having an annular region or a portion thereof adjacent the peripheral surface that is lean in catalysing material. A region adjacent the working surface is also lean in catalysing material such that in use, as a wear scar develops, both the leading edge and the trailing edge thereof are located in a region lean in catalysing material.

摘要翻译： 多晶金刚石研磨切割元件通常由结合到硬质合金基底的高级多晶金刚石层组成。 多晶金刚石层具有工作表面和外周表面，并且其特征在于具有环状区域或其邻近薄壁的催化材料的周边表面的一部分。 与工作表面相邻的区域也是贫的催化材料，使得在使用中，随着磨损痕迹的形成，其前缘和后缘都位于贫催化材料的区域中。

公开(公告)号：US20060099895A1

公开(公告)日：2006-05-11

申请号：US10533269

申请日：2003-09-12

申请人： Klaus Tank ,  Raymond Chapman ,  Roy Achilles

发明人： Klaus Tank ,  Raymond Chapman ,  Roy Achilles

IPC分类号： B26D1/12

CPC分类号： E21B10/5676 ,  E21B29/06 ,  Y10T407/19

摘要： A tool insert comprises a substrate (10) having a support surface and a support ring extending laterally from the support surface. The support ring is sized to define a recess (14) within the confines thereof and a shelf about the periphery thereof. A layer (12) of ultra-hard abrasive material is located within the recess and bonded to the substrate and the support ring (16), and presents a primary cutting edge (22) for the tool insert. A protective layer (18) is bonded to the shelf about the support ring so as to protect the primary cutting edge. The protective layer provides a secondary cutting edge (20) for the tool insert, the depth of the protective layer being selected so as to be sufficient to protect the primary cutting edge whilst cutting, milling or drilling through a first substance but to expose the primary cutting edge upon encountering a second substance.

摘要翻译： 工具插入件包括具有支撑表面的基底（10）和从支撑表面横向延伸的支撑环。 支撑环的尺寸被设计成在其范围内限定凹部（14），并且围绕其周边形成搁板。 超硬研磨材料层（12）位于凹槽内，并与衬底和支撑环（16）结合，并提供用于工具插入件的主切削刃（22）。 保护层（18）围绕支撑环结合到搁板上以便保护主切削刃。 保护层提供用于工具插入件的辅助切割边缘（20），保护层的深度被选择为足以保护主切削刃，同时切割，铣削或钻孔通过第一物质，但暴露于初级 在遇到第二物质时切割边缘。

公开(公告)号：US20050139397A1

公开(公告)日：2005-06-30

申请号：US11007261

申请日：2004-12-09

申请人： Roy Achilles ,  Bronwyn Roberts ,  Imraan Parker ,  Brett Lancaster ,  Klaus Tank

发明人： Roy Achilles ,  Bronwyn Roberts ,  Imraan Parker ,  Brett Lancaster ,  Klaus Tank

IPC分类号： B22F7/02 ,  C22C26/00 ,  E21B10/56 ,  E21B10/567 ,  E21B10/36

CPC分类号： E21B10/567 ,  B22F7/02 ,  B22F2998/00 ,  C22C26/00 ,  Y10T428/252 ,  Y10T428/30 ,  B22F2207/03

摘要： A polycrystalline diamond abrasive element, particularly a cutting element, comprises a layer of polycrystalline diamond having a working surface and bonded to a substrate, particularly a cemented carbide substrate, along an interface. The polycrystalline diamond abrasive element is characterised by using a binder phase that is homogeneously distributed through the polycrystalline diamond layer and that is of a fine scale. The polycrystalline diamond also has a region adjacent the working surface lean in catalysing material and a region rich in catalysing material.

摘要翻译： 多晶金刚石研磨元件，特别是切割元件，包括具有工作表面的多晶金刚石层，并沿着界面结合到基底，特别是硬质合金基底。 多晶金刚石研磨元件的特征在于使用均匀分布在多晶金刚石层上并且具有精细刻度的粘结相。 多晶金刚石还具有邻近工作表面的贫乏催化材料的区域和富含催化材料的区域。