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1. 发明授权

US06439327B1 Cutting elements for rotary drill bits 有权
标题翻译：旋转钻头切割元件
公开(公告)号：US06439327B1
公开(公告)日：2002-08-27
申请号：US09645650
申请日：2000-08-24
申请人： Nigel Dennis Griffin , Terry R. Matthias
发明人： Nigel Dennis Griffin , Terry R. Matthias
IPC分类号： E21B1046
CPC分类号： E21B10/573
摘要： A preform cutting element, for a rotary drill bit, and a rotary drill bit with prefrom cutting elements including a facing table of superhard material having a front face, a rear surface is bonded to the front surface of a substrate which is less hard than the superhard material and has a rim or edge section of the superhard material at least partially covered by a metallic material different from the substrate material. The metallic material is bonded to the edge section of the superhard material through a high pressure bonding step. The superhard material covered by the compliant metallic material is protected from impact forces occurring in drill bit operations such as tripping.
摘要翻译：一种用于旋转钻头的预成型切割元件和具有预切割元件的旋转钻头，该切割元件包括具有前表面的超硬材料的对置台，后表面接合到基板的前表面，该基板的硬度小于超硬材料并且具有至少部分被不同于基底材料的金属材料覆盖的超硬材料的边缘或边缘部分。金属材料通过高压结合步骤结合到超硬材料的边缘部分。由柔顺金属材料覆盖的超硬材料可以防止在诸如脱扣等钻头操作中发生的冲击力。

2. 发明授权

US06234261B1 Method of applying a wear-resistant layer to a surface of a downhole component 有权
公开(公告)号：US06234261B1
公开(公告)日：2001-05-22
申请号：US09340984
申请日：1999-06-28
申请人： Stephen Martin Evans , Terry R. Matthias , Tom Scott Roberts
发明人： Stephen Martin Evans , Terry R. Matthias , Tom Scott Roberts
IPC分类号： F21B1000
CPC分类号： E21B10/567 , E21B10/46 , E21B17/1092 , Y10S76/12 , Y10T29/49885 , Y10T156/1089
摘要： A method is disclosed comprising the steps of locating, on a surface of a downhole component, a plurality of thermally stable polycrystalline diamond (TSP) bearing elements, and then applying to the surface a settable facing material which bonds to the surface between the bearing elements and embraces the elements to hold them in place. A method in which bearing elements each comprising a body of TSP at least partly surrounded by a layer of less hard material are secured to the surface by welding or brazing part of the surface of each bearing element which comprises said less hard material to said component is also described.

3. 发明授权

US5740874A Cutting elements for rotary drill bits 失效
标题翻译：旋转钻头切割元件
公开(公告)号：US5740874A
公开(公告)日：1998-04-21
申请号：US635110
申请日：1996-04-19
申请人： Terry R. Matthias
发明人： Terry R. Matthias
IPC分类号： E21B10/56 , E21B10/567 , E21B10/46
CPC分类号： E21B10/5673
摘要： A preform cutting element for a rotary drag-type drill bit includes a facing table of polycrystalline diamond having a rear surface bonded to a tungsten carbide substrate. The cutting element is formed with an angled chamfer to form a straight cutting edge on the facing table. The junction between one end of the cutting edge and the remainder of the peripheral surface of the facing table is chamfered in a part-circular arc to provide a smooth transition between the cutting edge and the rest of the peripheral surface. Such transition may reduce the spalling or other damage which may be caused by steady state and impact loads in this region.
摘要翻译：用于旋转拖曳式钻头的预成型件切割元件包括具有结合到碳化钨基底的后表面的多晶金刚石的面对台。切割元件形成有成角度的倒角，以在相对台上形成直的切割刃。切割刃的一端与对置台的周边表面的其余部分之间的接合部以部分圆弧倒角，以在切割边缘和周边表面的其余部分之间平滑地过渡。这种转变可以减少由该区域的稳态和冲击载荷引起的剥落或其他损伤。

4. 发明授权

US5590728A Elements faced with superhard material 失效
标题翻译：元素面临超硬材料
公开(公告)号：US5590728A
公开(公告)日：1997-01-07
申请号：US337663
申请日：1994-11-09
申请人： Terry R. Matthias , Nigel D. Griffin , John M. Fuller
发明人： Terry R. Matthias , Nigel D. Griffin , John M. Fuller
IPC分类号： B23B27/14 , B24D3/00 , E21B10/56 , E21B10/573 , E21B17/10 , E21B10/46
CPC分类号： E21B10/5735 , B23B27/146 , B24D3/001 , E21B17/1092 , B23B2222/28 , B23B2226/125 , B23B2226/315 , Y10T407/26 , Y10T407/27
摘要： A preform element, such as a cutting element for a drag-type drill bit, includes a facing table of superhard material having a front face, a peripheral surface, and a rear surface bonded to a substrate which is less hard than the superhard material. The rear surface of the facing table is integrally formed with a plurality of ribs which project into the substrate and extend in directions outwardly away from an inner area of the facing table towards the peripheral surface thereof.
摘要翻译：诸如用于拖式钻头的切割元件的预成型件元件包括具有前表面，外周表面和粘合到基底上的与超硬材料相比硬的后表面的超硬材料的对置台。面对桌的后表面与多个肋一体地形成，该肋突出到衬底中，并且沿朝向桌面的内部区域的外侧方向向外延伸。

5. 发明授权

US06575350B2 Method of applying a wear-resistant layer to a surface of a downhole component 有权
标题翻译：将耐磨层施加到井下部件的表面的方法
公开(公告)号：US06575350B2
公开(公告)日：2003-06-10
申请号：US09800242
申请日：2001-03-06
申请人： Stephen Martin Evans , Terry R. Matthias , Tom Scott Roberts
发明人： Stephen Martin Evans , Terry R. Matthias , Tom Scott Roberts
IPC分类号： B23K3102
CPC分类号： E21B10/567 , E21B10/46 , E21B17/1092 , Y10S76/12 , Y10T29/49885 , Y10T156/1089
摘要： A method is disclosed comprising the steps of locating, on a surface of a downhole component, a plurality of thermally stable polycrystalline diamond (TSP) bearing elements, and then applying to the surface a settable facing material which bonds to the surface between the bearing elements and embraces the elements to hold them in place. A method in which bearing elements each comprising a body of TSP at least partly surrounded by a layer of less hard material are secured to the surface by welding or brazing part of the surface of each bearing element which comprises said less hard material to said component is also described.
摘要翻译：公开了一种方法，其包括以下步骤：在井下部件的表面上定位多个热稳定的多晶金刚石（TSP）承载元件，然后向表面施加可固定的面向材料，该可固定的面向材料结合到支承元件并拥抱这些元素来保持它们。一种方法，其中每个包括至少部分由较硬硬质材料层包围的TSP体的承载元件通过将包含所述较不硬的材料的每个轴承元件的表面的一部分焊接或钎焊到所述部件而固定到所述表面上，也描述。

6. 发明授权

US06481511B2 Rotary drill bit 有权
公开(公告)号：US06481511B2
公开(公告)日：2002-11-19
申请号：US09682471
申请日：2001-09-06
申请人： Terry R. Matthias , Nigel Dennis Griffin , Peter Raymond Hughes
发明人： Terry R. Matthias , Nigel Dennis Griffin , Peter Raymond Hughes
IPC分类号： E21B1046
CPC分类号： B22F7/06 , B22F2003/244 , B22F2005/001 , B22F2998/00 , B22F2999/00 , C04B35/52 , C04B35/645 , C04B37/021 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/405 , C04B2235/427 , C04B2235/442 , C04B2237/363 , C04B2237/401 , E21B10/567 , F16C33/043 , F16C2206/04 , Y10T407/27 , Y10T428/12493 , Y10T428/12625 , Y10T428/24942 , Y10T428/26 , Y10T428/265 , Y10T428/30 , B22F2207/03 , B22F1/0014 , C22C26/00
摘要： A rotary drill bit includes cutters arranged in a series of concentric rings, the cutters of one of the rings having a different wear resistance to the cutters of another of the rings with the result that the stability of the drill bit improves with wear. Although the wear resistance is different, the cutters have substantially the same impact toughness.

7. 发明授权

US06435058B1 Rotary drill bit design method 有权
公开(公告)号：US06435058B1
公开(公告)日：2002-08-20
申请号：US09682466
申请日：2001-09-06
申请人： Terry R. Matthias , Nigel Dennis Griffin , Peter Raymond Hughes
发明人： Terry R. Matthias , Nigel Dennis Griffin , Peter Raymond Hughes
IPC分类号： B21K504
CPC分类号： B22F7/06 , B22F2003/244 , B22F2005/001 , B22F2998/00 , B22F2999/00 , C04B35/52 , C04B35/645 , C04B37/021 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/405 , C04B2235/427 , C04B2235/442 , C04B2237/363 , C04B2237/401 , E21B10/567 , F16C33/043 , F16C2206/04 , Y10T407/27 , Y10T428/12493 , Y10T428/12625 , Y10T428/24942 , Y10T428/26 , Y10T428/265 , Y10T428/30 , B22F2207/03 , B22F1/0014 , C22C26/00
摘要： A method for use in designing rotary drill bits comprises determining locations in which cutters are to be provided, determining likely wear rates for cutters positioned at those locations, and using the likely wear rates to chose between relatively high and relatively low wear rate cutters for each location. The cutters all have substantially the same impact toughness.

8. 发明授权

US6011232A Manufacture of elements faced with superhard material 失效
标题翻译：制造元素面临超硬材料
公开(公告)号：US6011232A
公开(公告)日：2000-01-04
申请号：US8051
申请日：1998-01-16
申请人： Terry R. Matthias
发明人： Terry R. Matthias
IPC分类号： E21B10/56 , E21B10/573 , E21B10/46
CPC分类号： E21B10/5735
摘要： A method of manufacturing preform elements comprises the initial step of forming a preliminary component including a facing table of superhard material having a front face, a peripheral surface, and a rear surface bonded to a less hard substrate. The rear surface of the facing table and the front surface of the substrate are formed with inter-engaging projections and recesses to provide a non-planar interface between the substrate and facing table. There are then cut from the preliminary component a plurality of separate preform elements each having a facing table and substrate with a non-planar interface between them. The configuration of the non-planar interface of the preliminary component may vary with distance from its center, so that the non-planar interface of each preform element also varies in configuration across the width of the element.
摘要翻译：一种制造预型件元件的方法包括形成初步部件的初始步骤，该初步部件包括具有前表面，外周表面和与较硬硬质基材接合的后表面的超硬材料的对置台。面对台的后表面和基板的前表面形成有相互接合的突起和凹槽，以在基板和面对台之间提供非平面界面。然后从初步部件切割出多个单独的预成型件元件，每个单独的预成型件元件具有面对台和在它们之间具有非平面界面的基板。初步部件的非平面界面的配置可以随着距离其中心的距离而变化，使得每个预成型件元件的非平面界面也在元件的宽度上的配置上变化。

9. 发明授权

US5611649A Elements faced with superhard material 失效
标题翻译：元素面临超硬材料
公开(公告)号：US5611649A
公开(公告)日：1997-03-18
申请号：US491537
申请日：1995-06-16
申请人： Terry R. Matthias
发明人： Terry R. Matthias
IPC分类号： B23B27/14 , E21B10/56 , E21B10/567 , E21B10/573
CPC分类号： E21B10/567 , B23B27/146 , E21B10/5735 , B23B2222/28 , B23B2226/315 , Y10T407/26 , Y10T407/27 , Y10T408/78
摘要： A preform element, suitable for use as a cutting element on a rotary drill bit, includes a polycrystalline diamond facing table bonded to a tungsten carbide substrate, the rear surface of the facing table being formed with an array of elongate ribs which project from the facing table into the substrate. The array of ribs includes a plurality of pairs of ribs which extend inwardly away from the periphery of the facing table, each pair of ribs being in a generally V-shaped formation so that the ribs diverge as they extend inwardly away from said periphery. Adjacent pairs of ribs may intersect to provide a generally star-shaped formation.
摘要翻译：适合用作旋转钻头上的切割元件的预成型件元件包括结合到碳化钨基底的多晶金刚石对向台，所述对置台的后表面形成有细长肋的阵列，所述细长肋从所述面桌子进入底物。肋阵列包括从对置台的周边向内延伸的多对肋条，每对肋条大致呈V形，从而当肋条从所述周边向内延伸时发散。相邻的肋对可以相交以提供大致星形的结构。

10. 发明授权

US4862977A Drill bit and cutter therefor 失效
标题翻译：钻头和刀具
公开(公告)号：US4862977A
公开(公告)日：1989-09-05
申请号：US33072
申请日：1987-03-31
申请人： John D. Barr , Terry R. Matthias , Malcolm R. Taylor
发明人： John D. Barr , Terry R. Matthias , Malcolm R. Taylor
IPC分类号： E21B10/42 , E21B10/43 , E21B10/56 , E21B10/573
CPC分类号： E21B10/43 , E21B10/573
摘要： An elongate cutter for a drag-type drill bit includes a stud defining one end thereof and a cutting formation comprising a cutting face generally adjacent the other end. Length extends from one end to the other, depth extends generally transverse to the cutting face as well as transverse to the length, and width extends transverse to both length and depth. The stud has a cross section transverse to its length such that the cross section cannot be circumscribed by a reference circle whose diameter is equal to the maximum width of the cross section. The cross section also has an assumed section modulus, in the direction of depth, greater than that of the reference circle. The leading side of the cutter comprises a first planar zone adjacent the one end and a second planar zone adjacent the other end, and on which the cutting formation is carried. The maximum lateral dimension of the leading side is generally greater than or equal to the maximum width of the cutter.
摘要翻译：用于拖曳式钻头的细长切割器包括限定其一端的螺柱和包括大致相邻于另一端的切割面的切割结构。长度从一端延伸到另一端，深度通常横切切割面并且横向于长度延伸，宽度横向于长度和深度。螺柱具有横向于其长度的横截面，使得横截面不能被直径等于横截面的最大宽度的参考圆包围。横截面在深度方向上也具有大于参考圆的横截面模数。切割器的前侧包括邻近一端的第一平面区域和与另一端相邻的第二平面区域，并且在其上承载切割结构。前侧的最大横向尺寸通常大于或等于切割器的最大宽度。

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