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公开(公告)号：US20080053709A1
公开(公告)日：2008-03-06
申请号：US11511881
申请日：2006-08-29
IPC分类号： E21B10/42
CPC分类号： E21B10/55
摘要： A drill bit that includes a steel bit body having at least one blade thereon, at least one cutter pocket disposed on the at least one blade; at least one cutter disposed in the at least one cutter pocket; at least one recess formed in at least a portion of the surface of the at least one cutter pocket, wherein the recess is adjacent a leading face of the at least one blade; and an erosion resistant material in the at least one recess is disclosed.
摘要翻译： 一种钻头，其包括在其上具有至少一个刀片的钢钻头体，设置在所述至少一个刀片上的至少一个刀具凹口; 至少一个切割器设置在所述至少一个切割器凹槽中; 在所述至少一个切割器凹槽的至少一部分表面中形成的至少一个凹部，其中所述凹部邻近所述至少一个叶片的前表面; 并且公开了在所述至少一个凹部中的耐腐蚀材料。
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公开(公告)号：US5131480A
公开(公告)日：1992-07-21
申请号：US737640
申请日：1991-07-30
申请人： Alan W. Lockstedt , Quan V. Nguyen
发明人： Alan W. Lockstedt , Quan V. Nguyen
摘要： A milled tooth rotary cone rock bit, as it is operated in a borehole, subjects the heel of each cone into contact with the borehole wall when the gage row milled teeth wear. The heel row of each cone is relieved and tungsten carbide chisel inserts are equidistantly placed within the relieved heel row. The heel row inserts cooperate with the gage row milled teeth and progressively cut more of the gage of the borehole as the row of milled teeth on the gage of the cone wear. Moreover, the gage row milled teeth are partially hardfaced leaving relieved areas on the cutting side of each tooth to enhance the cutting action of the gage row of each cone.
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公开(公告)号：US08342268B2
公开(公告)日：2013-01-01
申请号：US12539412
申请日：2009-08-11
IPC分类号： E21B10/46
CPC分类号： B22F1/0096 , B22F3/26 , B22F2005/001 , B22F2998/00 , B22F2998/10 , E21B10/55 , Y10T428/25 , Y10T428/256 , C22C29/08 , B22F3/10
摘要： A drill bit that includes a bit body having a plurality of blades extending radially therefrom, wherein at least a portion of the bit body comprises a first matrix region comprising a plurality of primary carbide particles having an average mean free path of at least about 10 microns; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades is disclosed.
摘要翻译： 一种钻头，其包括具有从其径向延伸的多个叶片的钻头体，其中所述钻头体的至少一部分包括第一矩阵区域，所述第一矩阵区域包括具有至少约10微米的平均平均自由程的多个一次碳化物颗粒 ; 并且公开了用于接合设置在所述多个叶片中的至少一个叶片上的地层的至少一个切割元件。
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公开(公告)号：US08211203B2
公开(公告)日：2012-07-03
申请号：US12189992
申请日：2008-08-12
IPC分类号： B22F1/00
CPC分类号： C22C29/08 , B22F2998/00 , C22C19/07 , B22F1/0014
摘要： A matrix powder for forming a matrix bit body, the matrix powder essentially consisting of a plurality of carbide particles having a particle size distribution of ±20% of a median particle size; and a plurality of metal binder particles is disclosed.
摘要翻译： 一种用于形成基体钻头体的基质粉末，该基质粉末主要由多个碳化物颗粒组成，其粒径分布为中值粒度的±20％; 并且公开了多种金属粘合剂颗粒。
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公开(公告)号：US07743857B2
公开(公告)日：2010-06-29
申请号：US12116119
申请日：2008-05-06
IPC分类号： E21B10/16
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.
摘要翻译： 提供了一种滚动锥钻头，其具有从钻头轴线到第一排的量具插入件，以切割成全量规直径，其具有通过一层超级研磨材料增强的切割部分。 计量切割表面具有倾斜的中心轴线，以使其与给定曲线更正交，使得其量具上的接触点远离超级研磨材料层的较薄部分。
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公开(公告)号：US06988569B2
公开(公告)日：2006-01-24
申请号：US11032320
申请日：2005-01-10
IPC分类号： E21B10/08
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gage curve such that the its point of contact at gage is away from the thinner portion of the layer of super abrasive material.
摘要翻译： 提供了一种滚动锥钻头，其具有从钻头轴线到第一排的量具插入件，以切割成全量规直径，其具有通过一层超级研磨材料增强的切割部分。 量规切割表面具有倾斜的中心轴线，以使其与量规曲线更正交，使得其量规上的接触点远离超级研磨材料层的较薄部分。
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公开(公告)号：US06848521B2
公开(公告)日：2005-02-01
申请号：US10658888
申请日：2003-09-10
IPC分类号： E21B10/16 , E21B10/52 , E21B10/56 , E21B10/567
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： The present invention generally relates to positioning and/or orienting inserts on a gage row and/or a first inner row to optimize the duty among inserts on the gage row and/or insert row of cutting a sidewall and bottom hole of a bore hole such that wear and breakage of inserts are reduced and the life of the bit is enhanced.
摘要翻译： 本发明总体上涉及将定位和/或定向在量具行和/或第一内排上的插入件，以优化在量规插入件之间的占空比和/或插入钻孔的侧壁和底孔的行，例如 刀片的磨损和破损减少，钻头寿命增加。
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公开(公告)号：US4486104A
公开(公告)日：1984-12-04
申请号：US557560
申请日：1983-12-02
摘要： A heavy-duty composite radial journal bearing and a method to produce it is described. A pattern of openings is formed through a bearing sleeve representing, for instance, axially aligned metal bars. The openings are subsequently filled with a metal dissimilar to the sleeve. Filling may be done with the sleeve in place either on a journal or in a housing, in which case the bearing becomes integral to that member by fusion. Alternately, the sleeve may be filled upon a nonwettable mandrel and subsequently used as a floating ring or as a bushing. Final finish machining reveals a pattern which exists throughout the bearing of alternating areas of relatively hard metal and a softer antigalling metal.
摘要翻译： 描述了一种重型复合径向轴颈轴承及其制造方法。 通过例如轴向对准的金属棒的轴承套筒形成开口的图案。 开口随后用不同于套筒的金属填充。 填充可以通过套筒在轴颈或壳体中就位，在这种情况下，轴承通过熔合成为该构件的一部分。 或者，套筒可以填充在不可润湿的心轴上，随后用作浮环或衬套。 最终精加工显示存在于相对硬的金属和较软的防环氧金属的交替区域的整个轴承中的图案。
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