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公开(公告)号：US20210154728A1
公开(公告)日：2021-05-27
申请号：US17166932
申请日：2021-02-03
摘要： A drill bit includes a drill bit head, a multi-strand helix made up of three or more helix ribs, and a shank end along a drill bit axis. The multi-strand helix is made up of a conveyance area, a helix gradient, and a pitch. The helix ribs extend parallel to the drill bit axis in a first area adjacent to the drill bit head and a second area adjacent to the shank end.
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公开(公告)号：US10144104B2
公开(公告)日：2018-12-04
申请号：US14768362
申请日：2014-02-14
申请人： Kennametal Inc.
发明人： Horst Manfred Jaeger
摘要： In order, in a drill tip (2) which is provided particularly for a modular drilling tool, to generate a ridge (18) with supporting chamfers (26, 28) in a simple way, a non-round grinding method is provided, in which, proceeding from a starting rotary position (30) which corresponds to a cutting corner position, the radius is first reduced and is subsequently increased again to form the supporting chamfer (28). There is therefore no need for a separate grinding step to form the supporting chamfers (26, 28). The supporting chamfers (26, 28) preferably extend parallel to the longitudinal mid-axis (22) in the axial direction (24) and intersect coiled chucking grooves (26).
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公开(公告)号：US09982490B2
公开(公告)日：2018-05-29
申请号：US13782838
申请日：2013-03-01
IPC分类号： B21K5/04 , E21B10/573 , E21B17/14
CPC分类号： E21B10/5735 , E21B17/14
摘要： A method of forming a casing bit includes positioning a cutting element adjacent an outer surface of a casing bit body. The cutting element has a superhard material and a bonding material that is used to bond the cutting element to a body of the casing bit. The bonding material may be a weldable or brazable metal alloy, and a welding process or a brazing process, respectively, may be used to bond the cutting elements to body of the casing bit. Casing bits fabricated using such methods may exhibit reduced bond strength between the cutting elements and the casing bit body.
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公开(公告)号：US09656331B2
公开(公告)日：2017-05-23
申请号：US13296321
申请日：2011-11-15
CPC分类号： B23C3/32 , B23P15/32 , B24B19/04 , B24B27/0076 , Y10T409/300504 , Y10T409/300728 , Y10T409/307784
摘要： A system for simultaneously forming multiple flutes in a carbide rotary cutting tool includes a chuck adapted to grasp a green rod member and selectively rotate the green rod member about, and translate the green rod member along, a first axis. The system further includes a mechanism adapted to simultaneously machine multiple flutes in the green rod member as the green rod member is rotated about, and translated along, the first axis.
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公开(公告)号：US20130081880A1
公开(公告)日：2013-04-04
申请号：US13630780
申请日：2012-09-28
发明人： Thorsten Schwefe , Hatem Oueslati , Leroy W. Ledgerwood, III , Jayesh R. Jain , Danielle M. Fuselier
CPC分类号： E21B10/00 , E21B10/42 , G06F17/5086
摘要： A method of designing an earth-boring rotary drill bit includes designing a bit body and cutting elements of the drill bit such that features of the drill bit other than cutting elements engage and rub against the subterranean formation being drilled by the drill bit at depths-of-cut beyond, but close to, an intended median depth-of-cut, and such that the amount of rubbing area between such features and the formation increases at a relatively rapid rate as the depth-of-cut increases beyond the intended median depth-of-cut. Such methods may be employed to mitigate the occurrence of the stick-slip phenomenon during drilling. A method of fabricating a drill bit includes configuring a bit body and cutting elements in accordance with such a design. Earth-boring drill bits include a bit body and cutting elements so configured.
摘要翻译： 一种设计钻孔旋转钻头的方法包括设计钻头的钻头和切削元件，使得除了切削元件之外的钻头的特征与钻头在深度钻孔的地层接合并摩擦， 但是接近于预期的中间切削深度，并且使得这些特征和形成之间的摩擦面积的量以相对较快的速率增加，因为切削深度增加超过预期的中值 深度切割。 可以采用这种方法来减轻钻孔过程中粘滑现象的发生。 一种制造钻头的方法包括根据这种设计配置钻头体和切削元件。 钻孔钻头包括钻头体和如此配置的切削元件。
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公开(公告)号：US20120205160A1
公开(公告)日：2012-08-16
申请号：US13367526
申请日：2012-02-07
摘要： An earth boring drill bit comprising: one or more legs; a bit body having a blade and a slot for receiving the leg; and one or more wedge between the leg and the slot fixing the leg within the slot. The slot may have two parallel sidewalls with one of the sidewalls forming an acute angle and the other forming an obtuse angle. The wedge may be secured immediately next to the obtuse angled sidewall. The wedge may have two obtuse angled sides. One or more bolts through each wedge may secure both the wedge and the leg to the bit body. In a preferred embodiment, an obtuse angled sidewall of the wedge is preferably secured immediately next to an acute angled side of the leg.
摘要翻译： 一种钻孔钻头，包括：一个或多个腿; 具有刀片和用于接收腿部的槽的位体; 并且腿和狭缝之间的一个或多个楔将腿固定在狭槽内。 槽可以具有两个平行的侧壁，其中一个侧壁形成锐角，另一个形成钝角。 楔形物可紧固在钝角侧壁旁边。 楔形物可以具有两个钝角成角度的侧面。 通过每个楔块的一个或多个螺栓可以将楔块和腿部固定到钻头体上。 在优选实施例中，楔形物的钝角成角度的侧壁优选紧固在腿的锐角侧。
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7.发明申请EARTH-BORING TOOLS INCLUDING REPLACEABLE CUTTING STRUCTURES AND RELATED METHODS 有权包括可更换切割结构的地下工具及相关方法公开(公告)号：US20120125695A1
公开(公告)日：2012-05-24
申请号：US13299914
申请日：2011-11-18
CPC分类号： E21B10/633 , B23K31/025 , B23P15/28 , B24D3/06 , B28B23/005 , E21B10/006 , E21B10/62 , E21B10/627 , E21B12/02 , E21B2010/624 , Y10T29/49734 , Y10T29/49741 , Y10T29/49742 , Y10T29/49744 , Y10T29/49746
摘要： Earth-boring tools comprise a body and one or more replaceable cutting structures attached to the body at a face region of the body. Each replaceable cutting structure comprises an attachment member and a cutting portion configured to engage an underlying earth formation. Methods of forming an earth-boring tool comprise attaching one or more cutting elements to a replaceable cutting structure; positioning the replaceable cutting structure proximate a region of a body of an earth-boring tool that is susceptible to at least one of localized wear and localized impact damage; and attaching the replaceable cutting structure to the body. Methods of repairing an earth-boring tool comprise bringing a replaceable cutting structure proximate at least one portion of a body of an earth-boring tool exhibiting at least one of localized wear and localized impact damage; and attaching the replaceable cutting structure to the earth-boring tool at the at least one portion.
摘要翻译： 钻孔工具包括主体和在身体的面部区域处附接到身体的一个或多个可替换的切割结构。 每个可替换的切割结构包括附接构件和被配置为接合下面的地层的切割部分。 形成钻孔工具的方法包括将一个或多个切割元件附接到可替换的切割结构; 将可更换的切割结构定位在易受到局部磨损和局部冲击损伤中的至少一种的磨土工具的主体的区域附近; 以及将所述可替换的切割结构附接到所述主体。 修理钻孔工具的方法包括将可更换的切割结构置于靠近钻孔工具的主体的至少一部分，其具有局部磨损和局部冲击损伤中的至少一种; 以及在所述至少一个部分处将所述可更换切割结构附接到所述钻孔工具。
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8.发明申请DRILL BIT ASSEMBLY HAVING ELECTRICALLY ISOLATED GAP JOINT FOR ELECTROMAGNETIC TELEMETRY 有权具有用于电磁遥测的电气隔离缝隙的钻头组件公开(公告)号：US20120085583A1
公开(公告)日：2012-04-12
申请号：US13266064
申请日：2009-10-29
申请人： Derek Logan , Garry Holmen , Tony Dopf , Aaron Logan , Rob Utter , Brian Clark , Reza Taherian
发明人： Derek Logan , Garry Holmen , Tony Dopf , Aaron Logan , Rob Utter , Brian Clark , Reza Taherian
CPC分类号： E21B10/00 , E21B17/028 , E21B17/042 , E21B47/122 , F16L25/02
摘要： A drill bit assembly having an electrically isolated gap joint for electromagnetic telemetry comprises a drill bit, a pin body, an electrically insulating gap joint therebetween, and an electrical conductor extending across the gap joint. The bit head has a cutting end and an opposite connecting end with an engagement section. The pin body has a tubular body with an axial bore therethrough, and comprises a connecting end with an engagement section. The pin body connecting end is connected to the bit head connecting end such that the engagement sections overlap. The electrically insulating gap joint fills an annular gap between the bit head and pin body engagement sections such that the bit head and pin body are mechanically connected together at the connecting ends but are electrically separated. The electrical conductor has one end electrically contacting one of the bit head and pin body, and the other end communicable with electronics equipment.
摘要翻译： 具有用于电磁遥测的电隔离间隙接头的钻头组件包括钻头，销体，它们之间的电绝缘间隙接头以及横跨间隙接头延伸的电导体。 钻头头具有切割端和与接合部分相对的连接端。 销体具有一个具有穿过其中的轴向孔的管状体，并且包括具有接合部分的连接端。 销主体连接端连接到钻头头连接端，使得接合部分重叠。 电绝缘间隙接头填充钻头头和销体接合部分之间的环形间隙，使得钻头头和销体在连接端机械地连接在一起，但是电分离。 电导体的一端电接触钻头头和针体之一，另一端可与电子设备通信。
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公开(公告)号：US20110147089A1
公开(公告)日：2011-06-23
申请号：US13038993
申请日：2011-03-02
摘要： A drill bit is provided that in one embodiment includes a force application device on a body of a drill bit, the force application device including a floating member and a force application member configured to extend from the floating member to apply a force on a wellbore wall when the drill bit is used to drill a wellbore. The drill bit further includes an actuator configured to actuate the force application member to apply the force to a wellbore wall during drilling of the wellbore
摘要翻译： 提供了一种钻头，其在一个实施例中包括在钻头的主体上的施力装置，所述施力装置包括浮动构件和施力构件，其构造成从浮动构件延伸以向井壁施加力 当钻头用于钻井井。 所述钻头还包括致动器，所述致动器构造成致动所述施力部件以在钻井期间向井眼壁施加力
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公开(公告)号：US20110144649A1
公开(公告)日：2011-06-16
申请号：US12961565
申请日：2010-12-07
申请人： Gary Victor , Patrick M. White
发明人： Gary Victor , Patrick M. White
CPC分类号： A61B17/164 , A61B17/1617 , A61B17/162 , Y10T408/9098
摘要： A single use intramedullary reamer comprised of a reamer head assembly and a reamer shaft. The reamer head assembly further comprising a series of reamer blades that reside in a series of surface slots that are helically oriented around the cylindrical body. The series of reamer blades are bonded with the cylindrical body through induction bonding.
摘要翻译： 由铰刀头组件和铰刀轴构成的单用髓内铰刀。 扩孔钻头组件还包括一系列扩孔器刀片，其驻留在围绕圆柱体的螺旋取向的一系列表面槽中。 该系列的铰刀刀片通过感应焊接与圆柱体接合。
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