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公开(公告)号：EP1740794A1
公开(公告)日：2007-01-10
申请号：EP05741654.7
申请日：2005-04-28
发明人： MIRCHANDANI, Prakash, K. , EASON, Jimmy, W. , OAKES, James, J. , WESTHOFF, James, C. , COLLINS, Gabriel, B. , CLADWELL, Steven, G. , STEVENS, John, H. , MOSCO, Alfred, J.
IPC分类号： E21B10/46
CPC分类号： E21B10/46 , B22F2005/001 , B22F2998/00 , C22C1/1068 , C22C29/00 , C22C29/005 , C22C29/067 , B22F7/06
摘要： The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one of carbide, nitride, boride, oxide, and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder. In addition, the hard particles may comprise at least one of (i) cast carbide (WC+W2C) particles, (ii) transition metal carbide particles selected from the carbides of titanium, chromium, vanadium, zirconium, hafnium, tantalum, molybdenum, niobium, and tungsten, and (iii) sintered cemented carbide particles.
摘要翻译： 本发明涉及用于形成钻头的钻头体的组合物和方法。 钻头体可以包括硬颗粒，其中硬颗粒包括碳化物，氮化物，硼化物，氧化物和固溶体中的至少一种，以及将硬颗粒结合在一起的粘合剂。 粘合剂可以包含选自钴，镍和铁中的至少一种金属和任选的至少一种选自30-60重量％范围的过渡金属碳化物，至多10重量％的熔点降低成分， 硅，至多20重量％，最高达20重量％的铬，以及至多25重量％的锰，其中重量百分数是基于粘合剂的总重量。 此外，硬质颗粒可以包括（i）碳化钨（WC + W2C）颗粒，（ii）过渡金属碳化物颗粒中的至少一种，其选自钛，铬，钒，锆，铪，钽，钼， 铌和钨，和（iii）烧结的硬质合金颗粒。
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2.发明公开SILICON CARBIDE COMPOSITE MATERIALS, EARTH-BORING TOOLS COMPRISING SUCH MATERIALS, AND METHODS FOR FORMING THE SAME 审中-公开碳化硅复合材料，包含这种材料的挖土工具和形成该材料的方法
公开(公告)号：EP2235316A2
公开(公告)日：2010-10-06
申请号：EP08868037.6
申请日：2008-12-19
发明人： SMITH, Redd, H. , STEVENS, John, H. , DUGGAN, James , LYONS, Nicholas, J. , EASON, Jimmy, W. , GLADNEY, Jared, D. , OXFORD, James, A. , CHREST, Benjamin, J.
CPC分类号： E21B10/46 , B22D23/00 , B22F3/162 , B22F2005/001 , B22F2999/00 , C22C1/1036 , C22C29/065 , C22C32/0063 , C22C2001/1047 , B22F3/1021 , C22C1/1094
摘要： Earth-boring tools for drilling subterranean formations include a particle-matrix composite material comprising a plurality of silicon carbide particles dispersed throughout a matrix material, such as, for example, an aluminum or aluminum-based alloy. In some embodiments, the silicon carbide particles comprise an ABC-SiC material. Methods of manufacturing such tools include providing a plurality of silicon carbide particles within a matrix material. Optionally, the silicon carbide particles may comprise ABC-SiC material, and the ABC-SiC material may be toughened to increase a fracture toughness exhibited by the ABC-SiC material. In some methods, at least one of an infiltration process and a powder compaction and consolidation process may be employed.
摘要翻译： 用于钻探地下地层的钻地工具包括颗粒基质复合材料，其包括分散在整个基体材料中的多个碳化硅颗粒，例如铝或铝基合金。 在一些实施例中，碳化硅颗粒包含ABC-SiC材料。 制造这种工具的方法包括在基体材料内提供多个碳化硅颗粒。 可选地，碳化硅颗粒可以包括ABC-SiC材料，并且ABC-SiC材料可以被韧化以增加由ABC-SiC材料表现出的断裂韧性。 在一些方法中，可以采用渗透过程和粉末压实和固结过程中的至少一种。
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3.发明公开BONDING AGENTS FOR IMPROVED SINTERING OF EARTH-BORING TOOLS, METHODS OF FORMING EARTH-BORING TOOLS AND RESULTING STRUCTURES 审中-公开粘合剂地球镗刀，HERSTLELUNG土地钻探工具和所得结构的方法改善烧结
公开(公告)号：EP2178665A1
公开(公告)日：2010-04-28
申请号：EP08796937.4
申请日：2008-07-31
IPC分类号： B22F7/06 , E21B10/567
CPC分类号： E21B10/567 , B22F7/062 , B22F2005/001 , B22F2005/002 , Y10T428/12229 , Y10T428/12493 , Y10T428/12896 , Y10T428/12944
摘要： Methods for forming earth-boring tools include providing a metal or metal alloy bonding agent at an interface between a first element and a second element and sintering the first element, the second element, and the boding agent to form a bond between the first element and the second element at the interface. The methods may be used, for example, to bond together portions of a body of an earth-boring tool (which may facilitate, for example, the formation of cutting element pockets) or to bond cutting elements to a body of an earth-boring tool (e.g., a bit body of a fixed-cutter earth-boring drill bit or a cone of a roller cone earth-boring drill bit). At least partially formed earth-boring tools include a metal or metal alloy bonding agent at an interface between two or more elements, at least one of which may comprise a green or brown structure.
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4.发明公开
公开(公告)号：EP2668362A2
公开(公告)日：2013-12-04
申请号：EP12739141.5
申请日：2012-01-27
摘要： A method for applying a non-magnetic, abrasive, wear-resistant hardfacing material to a surface of a drill string member includes providing a non-magnetic drill string member formed of a non-magnetic material, the drill string member having an outer surface. It also includes providing a non-magnetic hardfacing precursor material comprising a plurality of non-magnetic, sintered carbide pellets and a non-magnetic matrix material; heating a portion of the non-magnetic hardfacing precursor material to a temperature above the melting point of the matrix material to melt the matrix material. It further includes applying the molten non-magnetic matrix material and the plurality of non-magnetic, sintered carbide pellets to the exterior surface of the drill string member; and solidifying the molten non-magnetic matrix material to form a layer of a non-magnetic hardfacing material having a plurality of non-magnetic, sintered carbide pellets dispersed in the hardfacing material.
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公开(公告)号：EP2044287A1
公开(公告)日：2009-04-08
申请号：EP07836067.4
申请日：2007-07-13
IPC分类号： E21B10/50
摘要： An earth-boring bit (11) has a steel body (13) and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone (21) and cutting elements (35) are formed of cemented tungsten carbide. The cone may be manufactured by applying pressure to a mixture of hard particles and metal alloy powder to form a billet, then machining the billet to a desired over-sized conical shaped product. Then the conical-shaped product is liquid-phase sintered to a desired density, which causes shrinking to the desired final shape.
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6.发明授权METHODS OF FORMING EARTH-BORING TOOLS USING GEOMETRIC COMPENSATION AND TOOLS FORMED BY SUCH METHODS 有权方法教育地球镗刀利用几何补偿和与该程序的培训工具
公开(公告)号：EP2313595B1
公开(公告)日：2016-09-28
申请号：EP09759316.4
申请日：2009-06-03
发明人： SMITH, Redd, H. , STEVENS, John, H. , DUGGAN, James , LYONS, Nicholas, J. , EASON, Jimmy, W. , MATTHEWS, Oliver , CURRY, David, A.
IPC分类号： E21B10/00
CPC分类号： E21B10/00
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7.发明公开COMPOSITE MATERIALS INCLUDING NANOPARTICLES, EARTH-BORING TOOLS AND COMPONENTS INCLUDING SUCH COMPOSITE MATERIALS, POLYCRYSTALLINE MATERIALS INCLUDING NANOPARTICLES, AND RELATED METHODS 审中-公开随着纳米，ERDBOHRWERKZEUGE和复合材料这样的复合成分，具有这样的纳米颗粒和相关程序多晶材料
公开(公告)号：EP2625368A2
公开(公告)日：2013-08-14
申请号：EP11831538.1
申请日：2011-10-05
CPC分类号： B22D19/14 , B22F1/0003 , B22F3/12 , B22F7/08 , C22C19/07 , C22C32/0047 , E21B10/55
摘要： A composite material comprising a plurality of hard particles surrounded by a matrix materia] comprising a plurality of nanoparticles. Earth boring tools including the composite material and methods of forming the composite material are also disclosed. A polycrystalline material having a catalyst material including nanoparticles in interstitial spaces between inter-bonded crystals of the polycrystalline material and methods of forming the polycrystalline material are also disclosed.
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8.发明授权
公开(公告)号：EP2122000B1
公开(公告)日：2013-05-15
申请号：EP08725891.9
申请日：2008-02-21
发明人： McCLAIN, Eric, E. , SCOTT, Dan, E. , FULLER, Wesley, Dean , WELCH, Robert, M. , EASON, Jimmy, W. , SKEEM, Marcus, R. , BRACKIN, Van, J.
CPC分类号： C22C26/00 , B22F2005/001 , B22F2998/00 , C22C1/101 , C22C1/1036 , E21B10/46 , B22F1/02 , B22F1/025 , C22C1/05
摘要： A method of constructing an earth-boring, diamond-impregnated drill bit has a first step of coating diamond grit with tungsten to create tungsten-coated diamond particles. These coated particles are then encapsulated in a layer of carbide powder held by an organic green binder material. The encapsulated granules are then mixed along with a matrix material and placed in a mold. The matrix material includes a matrix binder and abrasive particles. The mixture is heated in the mold at atmospheric pressure to cause the matrix binder to melt and infiltrate the encapsulated granules and abrasive particles.
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公开(公告)号：EP2571646A2
公开(公告)日：2013-03-27
申请号：EP11784259.1
申请日：2011-05-19
CPC分类号： C22F1/10 , B22D19/06 , B22D19/14 , B22F2998/00 , C22C1/1068 , C22C19/07 , B22F2005/001 , C22C29/08 , C22C32/0052
摘要： Methods of forming at least a portion of an earth-boring tool include providing particulate matter comprising a hard material in a mold cavity, melting a metal and the hard material to form a molten composition comprising a eutectic or near-eutectic composition of the metal and the hard material, casting the molten composition to form the at least a portion of an earth-boring tool within the mold cavity, and adjusting a stoichiometry of at least one hard material phase of the at least a portion of the earth-boring tool. Methods of forming a roller cone of an earth-boring rotary drill bit comprise forming a molten composition, casting the molten composition within a mold cavity, solidifying the molten composition to form the roller cone, and converting an eta-phase region within the roller cone to at least one of WC and W
2 C.-
10.发明公开METHODS OF FORMING EARTH-BORING TOOLS USING GEOMETRIC COMPENSATION AND TOOLS FORMED BY SUCH METHODS 有权方法教育地球镗刀利用几何补偿和与该程序的培训工具
公开(公告)号：EP2313595A2
公开(公告)日：2011-04-27
申请号：EP09759316.4
申请日：2009-06-03
发明人： SMITH, Redd, H. , STEVENS, John, H. , DUGGAN, James , LYONS, Nicholas, J. , EASON, Jimmy, W. , MATTHEWS, Oliver , CURRY, David, A.
IPC分类号： E21B10/46
CPC分类号： E21B10/00
摘要： Geometric compensation techniques are used to improve the accuracy by which features may be located on drill bits formed using particle compaction and sintering processes. In some embodiments, a positional error to be exhibited by at least one feature in a less than fully sintered bit body upon fully sintering the bit body is predicted and the at least one feature is formed on the less than fully sintered bit body at a location at least partially determined by the predicted positional error. In other embodiments, bit bodies of earth-boring rotary drill bits are designed to include a design drilling profile and a less than fully sintered bit body is formed including a drilling profile having a shape differing from a shape of the design drilling profile. Less than fully sintered bit bodies of earth-boring rotary drill bits are formed using such methods.
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