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1. 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.

2. 发明授权

US6065554A Preform cutting elements for rotary drill bits 失效
标题翻译：用于旋转钻头的预成型切割元件
公开(公告)号：US6065554A
公开(公告)日：2000-05-23
申请号：US949224
申请日：1997-10-10
申请人： Malcolm Roy Taylor , Nigel Dennis Griffin , Tom Scott Roberts
发明人： Malcolm Roy Taylor , Nigel Dennis Griffin , Tom Scott Roberts
IPC分类号： E21B10/56 , E21B10/567 , E21B10/573 , E21B10/46
CPC分类号： E21B10/5673 , E21B10/5735 , E21B2010/566
摘要： A preform cutting element for a rotary drag-type drill bit comprises a front facing table of superhard material having a front surface, a peripheral surface, a rear surface bonded to a substrate of less hard material, and a cutting edge formed by at least part of the junction between the front surface and the peripheral surface. The front surface of the facing table is formed with a chip-breaking formation which is located adjacent the cutting edge and is shaped to deflect transversely of the front surface of the facing table cuttings which, in use, are removed by the cutting edge from the formation being drilled. The chip-breaking formation may comprise a peripheral groove or rebate, or an upstanding ridge or insert.
摘要翻译：一种用于旋转拖曳式钻头的预成型件切割元件包括：超硬材料的前表面，具有前表面，外周表面，接合到较硬硬质材料的基底的后表面，以及由至少部分形成的切割刃的前表面和周边表面之间的连接处。面对台的前表面形成有断屑结构，其位于切割边缘附近并且被成形为横切面对台板的前表面偏转，在使用中，切割边缘被从切割边缘移除正在钻探地层。断屑层可以包括周边凹槽或折痕，或者直立的脊或插入件。

3. 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。

4. 发明授权

US6092613A Rotary drill bits 有权
公开(公告)号：US6092613A
公开(公告)日：2000-07-25
申请号：US207909
申请日：1998-12-09
申请人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
发明人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
IPC分类号： E21B10/00 , E21B10/26 , E21B10/54 , E21B10/55 , E21B10/60 , E21B17/10
CPC分类号： E21B10/55 , E21B10/003 , E21B10/26 , E21B10/60 , E21B10/602 , E21B17/1092
摘要： A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.

5. 发明授权

US08733475B2 Drill bit with enhanced hydraulics and erosion-shield cutting teeth 有权
标题翻译：钻头具有增强的液压和侵蚀屏蔽切割齿
公开(公告)号：US08733475B2
公开(公告)日：2014-05-27
申请号：US13016332
申请日：2011-01-28
申请人： Thang Vo , Tom Scott Roberts , Craig Ivie , Douglas Caraway
发明人： Thang Vo , Tom Scott Roberts , Craig Ivie , Douglas Caraway
IPC分类号： E21B10/08
CPC分类号： E21B10/18 , E21B10/16 , E21B10/50
摘要： Disclosed is a rolling cone drill bit with inner row cutting teeth having portions shielded with an erosion-resistant material that differs in material properties from the tooth's core portion that is more impact resistant. The tooth includes shielding on at least a portion of the upstream end and along portions of the flanking surfaces. It includes shield-free portions on the flanks between the root and the tooth crest. Most of the tooth's perimeter is made of the core material and is free of shielding. Gage row teeth may be angled and form a channel to direct drilling fluid from the gage region of the borehole to locations where the inner row teeth are generating most cuttings. Nozzles are provided with non-uniform orientations.
摘要翻译：公开了一种具有内排切割齿的滚动圆锥钻头，其具有用抗侵蚀材料屏蔽的部分，其材料特性与具有更耐冲击性的齿的芯部分不同。所述牙齿包括在所述上游端的至少一部分和所述侧面的部分上的屏蔽。它包括在根部和齿顶之间的侧面上的无屏蔽部分。牙齿的大部分周边由芯材制成，不受屏蔽。计量排齿可以成角度并且形成通道，以将钻井液从钻孔的测量区域引导到内排齿产生大多数切屑的位置。喷嘴具有不均匀的方向。

6. 发明授权

US5992547A Rotary drill bits 有权
公开(公告)号：US5992547A
公开(公告)日：1999-11-30
申请号：US208197
申请日：1998-12-09
申请人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
发明人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
IPC分类号： E21B10/00 , E21B10/26 , E21B10/54 , E21B10/55 , E21B10/60 , E21B17/10
CPC分类号： E21B10/55 , E21B10/003 , E21B10/26 , E21B10/60 , E21B10/602 , E21B17/1092
摘要： A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.

7. 发明授权

US5904213A Rotary drill bits 失效
公开(公告)号：US5904213A
公开(公告)日：1999-05-18
申请号：US835812
申请日：1997-04-16
申请人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
发明人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
IPC分类号： E21B10/00 , E21B10/26 , E21B10/54 , E21B10/55 , E21B10/60 , E21B17/10
CPC分类号： E21B10/55 , E21B10/003 , E21B10/26 , E21B10/60 , E21B10/602 , E21B17/1092
摘要： A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.

8. 发明授权

US08607899B2 Rock bit and cutter teeth geometries 有权
标题翻译：岩石钻头和刀齿几何形状
公开(公告)号：US08607899B2
公开(公告)日：2013-12-17
申请号：US13030513
申请日：2011-02-18
申请人： Thang Vo , Tom Scott Roberts , Adrian Reyes , Robert Morton
发明人： Thang Vo , Tom Scott Roberts , Adrian Reyes , Robert Morton
IPC分类号： E21B10/16
CPC分类号： E21B10/16 , E21B10/08 , E21B10/50 , E21B10/52
摘要： A rolling cone drill bit for cutting a borehole comprises a rolling cone cutter mounted on a bit body and adapted for rotation about a cone axis. Further, the bit comprises a tooth extending from the cone cutter. The tooth includes a base at the cone cutter and an elongate chisel crest distal the cone cutter. The crest extends along a crest median line between a first crest end and a second crest end and includes an elongate crest apex. The tooth also includes a first flanking surface extending from the base to the crest, and a second flanking surface extending from the base to the crest. The first flanking surface and the second flanking surface taper towards one another to form the chisel crest. Moreover, the tooth includes a first raised rib extending continuously along the first flanking surfaces and across the chisel crest to the second flanking surface.
摘要翻译：用于切割钻孔的滚动钻头钻头包括安装在钻头体上并适于围绕锥体轴线旋转的滚动锥形切割器。此外，钻头包括从锥形切割器延伸的齿。牙齿包括在锥形切割器处的基部和远离锥形切割器的细长凿顶部。波峰沿第一顶端和第二顶端之间的顶部中线延伸并且包括细长的顶点。齿还包括从基部延伸到顶部的第一侧面表面和从基部延伸到顶部的第二侧面表面。第一侧面和第二侧面朝向彼此逐渐变细以形成凿孔。此外，牙齿包括沿着第一侧面连续延伸并跨过凿头顶部延伸到第二侧面的第一凸起肋。

9. 发明授权

US6129161A Rotary drill bits with extended bearing surfaces 有权
标题翻译：旋转钻头具有延伸的轴承表面
公开(公告)号：US6129161A
公开(公告)日：2000-10-10
申请号：US159715
申请日：1998-09-24
申请人： Tom Scott Roberts , Clive Jarvis
发明人： Tom Scott Roberts , Clive Jarvis
IPC分类号： E21B10/54 , E21B10/55 , E21B10/60 , E21B17/10
CPC分类号： E21B10/55 , E21B10/602 , E21B17/1092
摘要： A rotary drill bit comprises a bit body having a leading face and a gauge region, cutting elements mounted on the bit body, fluid channels extending outwardly across the leading face towards the gauge region, and nozzles for supplying fluid to the channels. At the outer end of each alternate channel, in the gauge region, is an outwardly facing junk slot which extends across only a part of the width of the channel, and a bearing surface which extends across the other part of the channel and bears against a wall of the borehole being drilled. In the channel, inwardly of the bearing surface, is an opening into an enclosed passage which passes internally through the bit body to an outlet. The bearing surfaces at the end of the channels increase the peripheral bearing surface area of the drill bit, thus improving stability, but fluid can still escape from all parts of each channel.
摘要翻译：旋转钻头包括具有前表面和测量区域的钻头体，安装在钻头体上的切削元件，朝向测量区域的引导面向外延伸的流体通道，以及用于向通道供应流体的喷嘴。在每个备用通道的外端处，在测量区域中，是向外的垃圾槽，其仅延伸穿过通道宽度的一部分，以及延伸穿过通道的另一部分的支承表面，被钻孔的墙壁。在通道中，支承表面的内部是通向内部穿过钻头体的出口的通向封闭通道的开口。通道末端的轴承表面增加了钻头的周向轴承表面积，从而提高了稳定性，但是流体仍然可以从每个通道的所有部分逃逸出来。

10. 发明授权

US5967246A Rotary drill bits 有权
公开(公告)号：US5967246A
公开(公告)日：1999-10-19
申请号：US208170
申请日：1998-12-09
申请人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham Watson
发明人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham Watson
IPC分类号： E21B10/00 , E21B10/26 , E21B10/54 , E21B10/55 , E21B10/60 , E21B17/10
CPC分类号： E21B10/55 , E21B10/003 , E21B10/26 , E21B10/60 , E21B10/602 , E21B17/1092
摘要： A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.

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