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公开(公告)号：US4694919A
公开(公告)日：1987-09-22
申请号：US821303
申请日：1986-01-22
申请人： John D. Barr
发明人： John D. Barr
摘要： A method of manufacturing by a power metallurgy process a rotary drill bit including a bit body having an external surface on which are mounted a plurality of preform cutting elements, and an inner passage for supplying drilling fluid to at least one nozzle located in a socket at the external surface of the bit. The method includes the steps of forming a hollow mould for moulding the bit body, packing the mould with powdered material, such as tungsten carbide powder, and infiltrating the material with a metal alloy in a furnace to form a matrix. Before packing the mould with the powdered material, there is positioned in the interior surface of the mould at least one former which projects into the interior of the mould space at the desired location for a nozzle socket, the former having an external screw thread whereby the matrix material packed around the former becomes shaped with a corresponding internal screw thread. The former is so constructed that it may be removed from the bit body after formation thereof to leave in the matrix an internally threaded socket which may receive a separately formed, externally threaded nozzle. The internal threads in the socket are formed from the matrix material which surrounds and defines the socket.
摘要翻译： 一种通过功率冶金工艺制造的旋转钻头的方法，该旋转钻头包括具有外表面的钻头体，多个预成型件切割元件安装在该钻头体上，以及内部通道，用于向位于插座中的至少一个喷嘴提供钻井流体 钻头的外表面。 该方法包括以下步骤：形成用于模制钻头体的中空模具，用诸如碳化钨粉末的粉末材料包装模具，并在炉中用金属合金渗透材料以形成基体。 在用粉末材料包装模具之前，在模具的内表面中定位至少一个成形器，其在模具空间的内部突出到用于喷嘴插座的所需位置处，前者具有外螺纹， 围绕前者包装的基体材料变形成相应的内螺纹。 前者是这样构造的，使得它可以在其形成之后从钻头体中移除，从而在基体中离开可以容纳单独形成的外螺纹喷嘴的内螺纹插口。 插座中的内螺纹由围绕并限定插座的矩阵材料形成。
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公开(公告)号：US4646857A
公开(公告)日：1987-03-03
申请号：US790974
申请日：1985-10-24
申请人： Charles M. Thompson
发明人： Charles M. Thompson
IPC分类号： E21B10/54 , E21B10/55 , E21B10/56 , E21B10/573 , E21B10/46
CPC分类号： E21B10/55 , E21B10/5735
摘要： A metal matrix (53) of a blade (30) on a drag-type rotary drill bit (10) is formed about a plurality of diamond cutting elements (56) so that the entire surface areas of the cutting faces (62) are exposed and engage the formation to be cut in a drilling operation. The cutting elements (56) are secured by a mechanical interlocking bond or attachment (68, 70) between the cutting elements (56) and matrix (53) without utilizing the cutting faces (62) for securement.
摘要翻译： 围绕多个金刚石切割元件（56）形成在拖曳型旋转钻头（10）上的叶片（30）的金属基体（53），使得切割面（62）的整个表面区域露出 并进行钻井作业中的切割。 切割元件（56）通过在切割元件（56）和矩阵（53）之间的机械互锁结合或附接（68,70）固定，而不利用用于固定的切割面（62）。
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公开(公告)号：US4535853A
公开(公告)日：1985-08-20
申请号：US564804
申请日：1983-12-23
CPC分类号： E21B10/58 , E21B10/04 , E21B10/54 , E21B10/602
摘要： The invention relates to the geometry of drill bits for jet assisted rotary drilling. According to the invention there is used a drill bit comprising platelets of small radial dimension disposed about a central burster in a discontinuous peripheral crown axially extending said drill bit, channels for supplying pressurized fluid opening from the crown close to the platelets. Said platelets are preferably separated from one another by rectilinear discharge ramps. A drill bit in accordance with this invention can be manufactured e.g. by turning or milling. It can be applied for drilling rock formations in mines, and other hard materials.
摘要翻译： 本发明涉及用于喷射辅助旋转钻孔的钻头的几何形状。 根据本发明，使用包括小径向尺寸的血小板的钻头，其围绕轴向延伸所述钻头的不连续外周冠部围绕中心凸起布置，用于从靠近血小板的冠部供应加压流体开口的通道。 所述血小板优选通过直线排出斜坡彼此分开。 根据本发明的钻头可以被制造成例如。 通过车削或铣削。 它可以用于矿山和其他硬质材料中的钻岩。
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公开(公告)号：US4499958A
公开(公告)日：1985-02-19
申请号：US489934
申请日：1983-04-29
CPC分类号： E21B10/55 , E21B10/602 , E21B10/62
摘要： A drag blade bit for connection on a drill string has a hollow body on which there are welded a plurality of cutting or drilling blades. The blades extend longitudinally and radially of the bit body and terminate in relatively flat, radially extending cutting edges. A plurality of cutters are positioned in and spaced along the cutting edges and consists of cylindrical sintered carbide inserts with polycrystalline diamond cutting elements mounted thereon. Hardfacing is provided on the cutting edges between the cutters and on the other surfaces of the blades and the bit body subject to abrasive wear. One or more nozzles are positioned in passages from the interior of the bit body for directing flow of drilling fluid for flushing cuttings from the well bore and for cooling the bit.
摘要翻译： 用于在钻柱上连接的刮刀钻头具有中空体，焊接有多个切割或钻孔刀片。 刀片在钻头体的纵向和径向延伸并且终止于相对平坦的径向延伸的切削刃中。 多个切割器位于切割边缘并且沿着切割边缘间隔开，并由安装有多晶金刚石切割元件的圆柱形烧结碳化物刀片组成。 在切割器之间的切割刃和刀片的其它表面上以及磨损磨损的钻头体上提供了表面硬化。 一个或多个喷嘴定位在从钻头体的内部的通道中，用于引导钻井流体的流动，以从井眼冲洗钻屑并且用于冷却钻头。
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公开(公告)号：US3773122A
公开(公告)日：1973-11-20
申请号：US3773122D
申请日：1972-06-07
申请人： PALAR CURACAO NV
发明人： CHROMY F
CPC分类号： E21B10/54 , E21B10/40 , E21B10/445
摘要： A rock drilling tool, such as used with a hammer drill, consists of an axially extending shank and a drilling tool head at one end of the shank which provides the rock drilling or cutting action. The drilling tool head includes a centrally positioned axially extending centering projection with at least three angularly spaced drilling fingers disposed radially outwardly from the centering projection and forming therebetween an annular recess which extends inwardly into the drilling tool head from the axial end surfaces of the drilling fingers. Each drilling finger has a drilling tooth on its axial end surface and a circle including the radially outer surfaces of the drilling teeth has a greater diameter than the diameter of the shank. The arrangement of the centering projection, the spaced drilling fingers and the annular recess affords efficient removal of drilled material and reduced friction between the hole being drilled and the drilling tool.
摘要翻译： 诸如与锤钻一起使用的凿岩工具包括轴向延伸的柄和在柄的一端处的钻具头，其提供岩石钻孔或切割动作。 该钻具头部包括一个居中定位的轴向延伸的定心突起，其中至少有三个角度间隔开的钻孔指状件从该定心突起径向向外设置，并在其间形成一个环形凹槽，该凹槽从钻孔手指的轴向端面向内延伸进入钻具头部 。 每个钻孔手指在其轴向端表面上具有钻齿，并且包括钻孔齿的径向外表面的圆的直径大于柄的直径。 定心突起，间隔开的钻孔手指和环形凹槽的布置能够有效地去除钻孔材料，并减少钻孔孔和钻孔工具之间的摩擦力。
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公开(公告)号：US3127794A
公开(公告)日：1964-04-07
申请号：US21739162
申请日：1962-08-16
申请人： HUGHES TOOL CO
发明人： STOCKARD JR JESSE L
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公开(公告)号：US2830794A
公开(公告)日：1958-04-15
申请号：US48950655
申请日：1955-02-21
申请人： MILLS MACHINE CO
发明人： MILLS EDWARD O
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公开(公告)号：US1923487A
公开(公告)日：1933-08-22
申请号：US56691131
申请日：1931-10-05
申请人： GLOBE OIL TOOLS CO
发明人： HOWARD JOHN H , CATLAND ALFRED C
IPC分类号： E21B10/54
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公开(公告)号：US20240068302A1
公开(公告)日：2024-02-29
申请号：US18240840
申请日：2023-08-31
发明人： Youhe Zhang , Huimin Song
IPC分类号： E21B17/042 , E21B10/54
CPC分类号： E21B17/042 , E21B10/54
摘要： In some aspects, the techniques described herein relate to a bit. The bit includes a bit head formed from a first material. A connection portion is connected to the bit head opposite the bit head. The connection portion has a box connection having an inner surface with a threaded connection for connection to a drill string. A reinforcing ring is formed from a second material. The reinforcing ring is located at the connection portion to strengthen the connection portion. The reinforcing ring is connected to the connection portion with an interlocking feature.
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公开(公告)号：US20230407706A1
公开(公告)日：2023-12-21
申请号：US18250279
申请日：2021-07-13
申请人： SHENZHEN UNIVERSITY
发明人： Mingzhong GAO , Xuan WANG , Minghui LI , Bengao YANG , Xiangyue WEN , Zhaoying YANG
摘要： A microwave rock-breaking drilling device includes an integrated drill bit assembly, a microwave generating assembly, and a water-jetting and dust-removing assembly, the integrated drill bit assembly comprises a drill bit body, a cutterhead, and a cutting tooth, the cutterhead and the cutting tooth are provided on the drill bit body; the microwave generating assembly comprises a microwave emitting hole, the microwave emitting hole is located on the drill bit body and is communicated with outside; the water-jetting and dust-removing assembly comprises a water jetting hole, the water jetting hole is located on the drill bit body and is communicated with outside.
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