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71. 发明申请

US20110073378A1 Ultrahard Sintered Carbide Particles in Hardfacing for Earth-Boring Bit 有权
标题翻译：超硬烧结碳化物颗粒在地面钻孔中的表面硬化
公开(公告)号：US20110073378A1
公开(公告)日：2011-03-31
申请号：US12893953
申请日：2010-09-29
申请人： James L. Overstreet
发明人： James L. Overstreet
IPC分类号： E21B10/36 , C09K3/14 , B24D3/06
CPC分类号： E21B10/46 , B24D99/005
摘要： A hardfacing composition for downhole well tools, such as earth boring bits, contains sintered ultrahard particles. The ultrahard particles consist of tungsten carbide grains, cobalt and vanadium. The ultrahard particles are dispersed within a matrix metal of iron, nickel or alloys thereof. The composition may also have sintered tungsten carbide particles of a larger size than the ultrahard particles. The ultrahard particles have a greater hardness than the sintered tungsten carbide particles. The ultrahard particles and the sintered tungsten carbide particles may be in a spherical pellet form. Other hard metal particles may be in the composition.
摘要翻译：用于井下井工具（例如镗孔钻头）的表面硬化组合物包含烧结超硬颗粒。超硬颗粒由碳化钨颗粒，钴和钒组成。超硬颗粒分散在铁，镍或其合金的基质金属中。组合物还可以具有比超硬颗粒更大尺寸的烧结碳化钨颗粒。超硬颗粒具有比烧结碳化钨颗粒更大的硬度。超硬颗粒和烧结碳化钨颗粒可以是球形颗粒形式。其他硬质金属颗粒可以在组合物中。

72. 发明授权

US07784567B2 Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits 有权
标题翻译：包括加强钛或钛基合金基体材料的钻头体的钻孔旋转钻头以及用于形成这种钻头的方法
公开(公告)号：US07784567B2
公开(公告)日：2010-08-31
申请号：US11593437
申请日：2006-11-06
申请人： Heeman Choe , John H. Stevens , James L. Overstreet , James C. Westhoff , Jimmy W. Eason
发明人： Heeman Choe , John H. Stevens , James L. Overstreet , James C. Westhoff , Jimmy W. Eason
IPC分类号： E21B1/54
CPC分类号： E21B10/00 , B22F7/062 , B22F7/08 , B22F2005/002 , B22F2998/10 , C22C1/051 , C22C14/00 , C22C29/005 , C22C32/0047 , E21B10/567 , B22F3/04 , B22F3/162
摘要： Earth-boring rotary drill bits include bit bodies comprising a composite material including a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based alloy matrix material. The bits further include a cutting structure disposed on a face of the bit body. In some embodiments, the bit bodies may include a plurality of regions having differing material compositions. For example, the bit bodies may include a first region comprising a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based alloy matrix material, and a second region comprising a titanium or a titanium-based alloy material. Methods for forming such drill bits include at least partially sintering a plurality of hard particles and a plurality of particles comprising titanium or a titanium-based alloy material to form a bit body comprising a particle-matrix composite material. A shank may be attached directly to the bit body.
摘要翻译：钻孔旋转钻头包括钻头体，其包括复合材料，所述复合材料包括分散在整个钛或钛基合金基体材料中的多个硬质相区域或颗粒。钻头还包括设置在钻头体的表面上的切割结构。在一些实施例中，钻头体可以包括具有不同材料组成的多个区域。例如，钻头体可以包括包括分散在整个钛或钛基合金基体材料中的多个硬质相区域或颗粒的第一区域，以及包含钛或钛基合金材料的第二区域。形成这种钻头的方法包括至少部分地烧结多个硬颗粒和多个包含钛或钛基合金材料的颗粒，以形成包含颗粒 - 基体复合材料的钻头体。柄可以直接附接到钻头体上。

73. 发明申请

US20100132265A1 ABRASIVE WEAR-RESISTANT MATERIALS, METHODS FOR APPLYING SUCH MATERIALS TO EARTH-BORING TOOLS, AND METHODS OF SECURING A CUTTING ELEMENT TO AN EARTH-BORING TOOL USING SUCH MATERIALS 有权
标题翻译：磨损耐磨材料，将这种材料应用于接地工具的方法以及使用这种材料将切割元件保护到地球工具的方法
公开(公告)号：US20100132265A1
公开(公告)日：2010-06-03
申请号：US12702100
申请日：2010-02-08
申请人： James L. Overstreet
发明人： James L. Overstreet
IPC分类号： B24D11/00 , C09K3/14
CPC分类号： E21B10/46 , B22F7/062 , B22F2005/001 , C22C29/08 , E21B10/573
摘要： An abrasive wear-resistant material includes a matrix and sintered and cast tungsten carbide granules. A device for use in drilling subterranean formations includes a first structure secured to a second structure with a bonding material. An abrasive wear-resistant material covers the bonding material. The first structure may include a drill bit body and the second structure may include a cutting element. A method for applying an abrasive wear-resistant material to a drill bit includes providing a bit, mixing sintered and cast tungsten carbide granules in a matrix material to provide a pre-application material, heating the pre-application material to melt the matrix material, applying the pre-application material to the bit, and solidifying the material. A method for securing a cutting element to a bit body includes providing an abrasive wear-resistant material to a surface of a drill bit that covers a brazing alloy disposed between the cutting element and the bit body.
摘要翻译：磨料耐磨材料包括基体和烧结和铸造的碳化钨颗粒。用于钻探地下地层的装置包括用粘合材料固定到第二结构的第一结构。磨料耐磨材料覆盖接合材料。第一结构可以包括钻头体，并且第二结构可以包括切割元件。将磨料耐磨材料施加到钻头的方法包括提供钻头，将基体材料中的烧结和铸造碳化钨颗粒混合以提供预施加材料，加热预施加材料以熔化基质材料，将预施加材料施加到钻头上，并固化材料。用于将切割元件固定到钻头体的方法包括向钻头的表面提供磨料耐磨材料，所述钻头覆盖设置在切割元件和钻头体之间的钎焊合金。

74. 发明申请

US20100078226A1 Self Sharpening Steel Tooth Cutting Structure 有权
标题翻译：自锐钢齿切割结构
公开(公告)号：US20100078226A1
公开(公告)日：2010-04-01
申请号：US12255479
申请日：2008-10-21
申请人： Robert J. Buske , James L. Overstreet
发明人： Robert J. Buske , James L. Overstreet
IPC分类号： E21B10/08
CPC分类号： E21B10/50 , E21B10/006 , E21B10/16
摘要： An earth boring drill bit comprising a milled cutter having rows of teeth hardfacing guides on the cutter. Hardfacing is applied between adjacent teeth hardfacing guides to form a cutting element. The hardfacing may include an annular body with ridges that outwardly project from the body.
摘要翻译：一种钻孔钻头，其包括铣刀，该切割器具有在切割器上的排齿表面硬化引导件。在相邻的牙齿硬面导向件之间施加表面硬化以形成切割元件。表面硬化可以包括具有从身体向外突出的脊的环形体。

75. 发明申请

US20090260482A1 MATERIALS FOR ENHANCING THE DURABILITY OF EARTH-BORING BITS, AND METHODS OF FORMING SUCH MATERIALS 有权
标题翻译：用于增强接地位的耐久性的材料及形成这种材料的方法
公开(公告)号：US20090260482A1
公开(公告)日：2009-10-22
申请号：US12391690
申请日：2009-02-24
申请人： David A. Curry , James L. Overstreet , Jimmy W. Eason
发明人： David A. Curry , James L. Overstreet , Jimmy W. Eason
IPC分类号： C22C29/08 , B22F9/04 , B22F3/00 , B22F3/10
CPC分类号： C22C29/08 , B22F2005/001 , B22F2998/00 , E21B10/46 , B22F1/0014 , B22F1/0048
摘要： An earth-boring drill bit having a bit body with a cutting component formed from a tungsten carbide composite material is disclosed. The composite material includes a binder and tungsten carbide crystals comprising sintered pellets. The composite material may be used as a hardfacing on the body and/or cutting elements, or be used to form portions or all of the body and cutting elements. The pellets may be formed with a single mode or multi-modal size distribution of the crystals.
摘要翻译：公开了一种具有由碳化钨复合材料形成的切割部件的钻头体的钻孔钻头。复合材料包括粘合剂和包含烧结颗粒的碳化钨晶体。复合材料可以用作身体和/或切割元件上的硬化面，或者用于形成身体和切割元件的部分或全部。颗粒可以用晶体的单模或多模尺寸分布形成。

76. 发明申请

US20090113811A1 ABRASIVE WEAR-RESISTANT MATERIALS, METHODS FOR APPLYING SUCH MATERIALS TO EARTH-BORING TOOLS, AND METHODS FOR SECURING CUTTING ELEMENTS TO EARTH-BORING TOOLS 有权
标题翻译：耐磨耐磨材料，将这种材料应用于接地工具的方法以及将切割元件安装到接地工具的方法
公开(公告)号：US20090113811A1
公开(公告)日：2009-05-07
申请号：US12350761
申请日：2009-01-08
申请人： James L. Overstreet
发明人： James L. Overstreet
IPC分类号： C09K3/14
CPC分类号： E21B10/567 , B22F7/062 , B22F2005/001 , B24D3/06 , C22C29/08 , C22C32/0052 , E21B10/46 , E21B10/573
摘要： An abrasive wear-resistant material includes a matrix and sintered and cast tungsten carbide pellets. A device for use in drilling subterranean formations includes a first structure secured to a second structure with bonding material. An abrasive wear-resistant material covers the bonding material. The first structure may include a drill bit body and the second structure may include a cutting element. A method for applying an abrasive wear-resistant material to a drill bit includes providing a bit, mixing sintered and cast tungsten carbide pellets in a matrix material to provide a pre-application material, heating the pre-application material to melt the matrix material, applying the pre-application material to the bit, and solidifying the material. A method for securing a cutting element to a bit body includes providing an abrasive wear-resistant material to a surface of a drill bit that covers a brazing alloy disposed between the cutting element and the bit body.
摘要翻译：磨料耐磨材料包括基体和烧结和铸造碳化钨球粒。用于钻探地下地层的装置包括用接合材料固定到第二结构的第一结构。磨料耐磨材料覆盖接合材料。第一结构可以包括钻头体，并且第二结构可以包括切割元件。将磨料耐磨材料施加到钻头的方法包括提供钻头，将基体材料中的烧结和铸造碳化钨球粒混合以提供预施加材料，加热预施加材料以熔化基体材料，将预施加材料施加到钻头上，并固化材料。用于将切割元件固定到钻头体的方法包括向钻头的表面提供磨料耐磨材料，所述钻头覆盖设置在切割元件和钻头体之间的钎焊合金。

77. 发明授权

US07510034B2 System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials 有权
标题翻译：用于增加钻石钻头与碳化物材料的耐久性的系统，方法和装置
公开(公告)号：US07510034B2
公开(公告)日：2009-03-31
申请号：US11545914
申请日：2006-10-11
申请人： David A. Curry , James L. Overstreet , Jimmy W. Eason
发明人： David A. Curry , James L. Overstreet , Jimmy W. Eason
IPC分类号： E21B10/46 , C22C29/08
CPC分类号： C22C29/08 , B22F2005/001 , B22F2998/00 , E21B10/46 , B22F1/0014 , B22F1/0048
摘要： An earth-boring drill bit having a bit body with a cutting component formed from a tungsten carbide composite material is disclosed. The composite material includes a binder and tungsten carbide crystals comprising sintered pellets. The composite material may be used as a hardfacing on the body and/or cutting elements, or be used to form portions or all of the body and cutting elements. The pellets may be formed with a single mode or multi-modal size distribution of the crystals.
摘要翻译：公开了一种具有由碳化钨复合材料形成的切割部件的钻头体的钻孔钻头。复合材料包括粘合剂和包含烧结颗粒的碳化钨晶体。复合材料可以用作身体和/或切割元件上的硬化面，或者用于形成身体和切割元件的部分或全部。颗粒可以用晶体的单模或多模尺寸分布形成。

78. 发明申请

US20080283305A1 Method of Repairing Diamond Rock Bit 有权
标题翻译：钻石钻头修复方法
公开(公告)号：US20080283305A1
公开(公告)日：2008-11-20
申请号：US12123264
申请日：2008-05-19
申请人： James L. Overstreet , Kenneth E. Gilmore , James C. Green
发明人： James L. Overstreet , Kenneth E. Gilmore , James C. Green
IPC分类号： E21B10/46
CPC分类号： E21B10/46 , B23K35/3033 , C22C19/058
摘要： Hardfacing is applied on the gage surface of bit blades, the leading and trailing edges of bit blades, and on carbide inserts. The gage surface contains natural diamonds, synthetic diamonds, thermal stable polycrystalline (TSP) diamonds and carbide inserts, and the hardfacing is applied over at least a portion of them. As the primary cutters on the bit blades are worn down during drilling, the gage surface of the bit is also worn down. A hardfacing is applied to the worn gage surfaces of the bit, thereby allowing the bit to drill deeper and longer without requiring replacement.
摘要翻译：耐磨性应用于钻头刀片的表面，钻头刀片的前缘和后缘以及硬质合金刀片上。表面含有天然金刚石，人造金刚石，热稳定多晶（TSP）金刚石和硬质合金刀片，并且其表面硬化应用于其至少一部分。由于钻头刀片上的主要刀具在钻孔过程中磨损，钻头的表面也磨损。表面硬度应用于钻头的磨损表面，从而允许钻头钻更深更长而不需要更换。

79. 发明申请

US20080283304A1 Steel tooth drill bit with improved tooth breakage resistance 有权
标题翻译：钢齿钻头具有改善的抗牙齿破坏能力
公开(公告)号：US20080283304A1
公开(公告)日：2008-11-20
申请号：US11804607
申请日：2007-05-18
申请人： James L. Overstreet , Robert J. Buske , Kenneth E. Gilmore , Jeremy K. Morgan
发明人： James L. Overstreet , Robert J. Buske , Kenneth E. Gilmore , Jeremy K. Morgan
IPC分类号： E21B10/06 , B21K5/04
CPC分类号： E21B10/50 , C22C29/067
摘要： A drill bit having steel teeth is provided with a combination of hardfacing materials on the teeth. The bases of the teeth are hardfaced with nickel-based materials to significantly reduce any potential cracking therein. Portions of the supporting cones adjacent the teeth also may be fabricated with the nickel-based hardfacing. All other portions of the teeth are hardfaced with iron-based materials.
摘要翻译：具有钢齿的钻头具有牙齿上的表面硬化材料的组合。齿的基部用镍基材料硬化，以显着减少其中的任何潜在的裂纹。邻近牙齿的支撑锥的部分也可以用镍基硬化面来制造。齿的所有其他部分都用铁基材料硬化。

80. 发明申请

US20080223619A1 SYSTEM, METHOD, AND APPARATUS FOR PASSIVE AND ACTIVE UPDRILL FEATURES ON ROLLER CONE DRILL BITS 有权
标题翻译：用于滚子钻头钻头的被动和主动钻孔特征的系统，方法和装置
公开(公告)号：US20080223619A1
公开(公告)日：2008-09-18
申请号：US11685898
申请日：2007-03-14
申请人： James L. Overstreet , Robert J. Buske , Jeremy K. Morgan
发明人： James L. Overstreet , Robert J. Buske , Jeremy K. Morgan
IPC分类号： E21B10/50
CPC分类号： E21B7/28 , E21B10/50 , E21B17/1092
摘要： Strategically placed hardfacing material near the shank end of a drill bit above the transition edges provides additional protection for compensator areas and the upper leg surfaces of drill bits during updrilling and/or backreaming operations. The strategically located hardfacing is typically passive in the normal drill mode, but active in the updrill drilling mode and/or back reaming. Alternative designs including other strategic material placement, the formation of hardfacing materials in tooth/wear design shapes, bimetallic gage, graded composite hardfacing materials, recesses or cavities at edges of the outer diameter, and various methods of applying the material also may be employed.
摘要翻译：在过渡边缘上方的钻头的柄端附近的策略放置的表面硬化材料在升级和/或回流操作期间为补偿器区域和钻头的大腿表面提供额外的保护。在正常钻孔模式下，战略位置的硬面通常是无源的，但在更新钻孔模式和/或后铰孔中处于活动状态。也可以采用包括其它策略性材料放置，在牙齿/磨损设计形状中的表面硬化材料的形成，双金属计，分级复合材料表面材料，外径边缘处的凹陷或空腔的替代设计，以及施加材料的各种方法。

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