公开(公告)号：US20080179104A1

公开(公告)日：2008-07-31

申请号：US11939320

申请日：2007-11-13

申请人： Youhe Zhang ,  Guodong Zhan ,  Xiayang Sheng ,  Alan W. Lockstedt ,  Anthony Griffo ,  Yuelin Shen ,  Hong Deng ,  Madapusi K. Keshavan

发明人： Youhe Zhang ,  Guodong Zhan ,  Xiayang Sheng ,  Alan W. Lockstedt ,  Anthony Griffo ,  Yuelin Shen ,  Hong Deng ,  Madapusi K. Keshavan

IPC分类号： E21B10/08

CPC分类号： C22C29/06 ,  B22F1/0025 ,  B82Y30/00

摘要： A drill bit that includes a bit body; and at least one cutting element for engaging the formation disposed on the bit body, the at least one cutting element comprising: a ductile phase; a plurality of carbide particles dispersed in the ductile phase; and a plurality of nanotubes integrated into the cutting element is disclosed.

摘要翻译： 钻头包括一个位体; 以及用于接合设置在钻头体上的地层的至少一个切割元件，所述至少一个切割元件包括：延性相; 分散在延性相中的多个碳化物颗粒; 并且公开了集成到切割元件中的多个纳米管。

公开(公告)号：US20080149397A1

公开(公告)日：2008-06-26

申请号：US11954909

申请日：2007-12-12

申请人： James Leslie Overstreet

发明人： James Leslie Overstreet

IPC分类号： E21B10/08 ,  C22C45/02 ,  B21K5/02

CPC分类号： C23C30/005 ,  B22F2005/001 ,  C22C29/08 ,  C22C45/02 ,  E21B10/50

摘要： A highly abrasive wear metal matrix composite hardfacing material for downhole tools is disclosed. The hardfacing material may comprise a matrix of a softer material with high hardness, such as amorphous nanocomposite steel alloys, and one or more hard component materials. The hard component materials may comprise sintered tungsten carbide, monocrystalline WC, polycrystalline WC, and the additional component of spherical cast tungsten carbide. Alternatively, a matrix of softer material, hard component materials and crushed cast tungsten carbide may be used.

摘要翻译： 公开了用于井下工具的高度磨损的耐磨金属基复合材料表面硬化材料。 表面硬化材料可以包括具有高硬度的较软材料的基体，例如无定形纳米复合钢合金和一种或多种硬质组分材料。 硬组分材料可以包括烧结碳化钨，单晶WC，多晶WC和球形铸造碳化钨的附加组分。 或者，可以使用较软材料，硬质组分材料和粉碎铸造碳化钨的基质。

公开(公告)号：US20070272445A1

公开(公告)日：2007-11-29

申请号：US11753268

申请日：2007-05-24

申请人： Peter T. Cariveau ,  Bala Durairajan

发明人： Peter T. Cariveau ,  Bala Durairajan

IPC分类号： E21B10/08

CPC分类号： E21B17/1092

摘要： A drill bit for drilling a borehole in earthen formations. In an embodiment, the bit comprises a bit body having a bit axis and a bit face. In addition, the bit comprises a pin end extending from the bit body opposite the bit face. Further, the bit comprises a plurality of gage pads extending from the bit body, wherein each gage pad includes a radially outer gage-facing surface. The gage-facing surfaces of the plurality of gage pads define a gage pad circumference that is centered relative to a gage pad axis, the gage pad axis being substantially parallel to the bit axis and offset from the bit axis.

摘要翻译： 用于在土层中钻孔的钻头。 在一个实施例中，该位包括具有位轴和位面的位体。 此外，该钻头包括从钻头体相对于钻头面延伸的销端。 此外，钻头包括从钻头体延伸的多个计量垫，其中每个计量垫包括径向外表面的表面。 多个量具垫的面向表面的表面限定了相对于量规垫轴线居中的量具垫周长，量规垫轴线基本上平行于钻头轴线并且偏离钻头轴线。

公开(公告)号：US07299887B2

公开(公告)日：2007-11-27

申请号：US10512399

申请日：2003-03-26

申请人： Xuezhong Liu ,  Yan Zhao

发明人： Xuezhong Liu ,  Yan Zhao

IPC分类号： E21B10/08 ,  E21B10/14

CPC分类号： E21B10/083

摘要： This invention relates to a single cone bit with offset axis and composite cones for oil and gas drilling, mining and other subterranean drilling operations. The bit consists of a head body and a cone. The cone section has a shape of composite cones. The outer circumference of the cone is composed of from back face of the cone to top of the cone an extended gage surface, an outer cone surface and a main cone surface. A plurality of cutting elements is mounted onto each cone surface. A head journal at lower end of the head body is for rotatablely connection with the cone. Between the axis of head journal and the axis of the bit, there is an offset value d along rotating direction of the cone. A gage pad is arranged on head body at a location opposite to the offset direction of the head journal. The gage pad is fitted with inserts or hardfaced with wear resistant alloy to prevent bit from whirling and prevent head body from being worn out and to ensure gage protection. Junk slots are machined along the side of head body and jet ports are arranged at lower bevel of the head body to guarantee cuttings removal and effective cleaning results. This invention improves the bit's ability to break rocks through impact for specific use in hard formations. The bit performance is obviously improved and overall drilling cost reduced.

摘要翻译： 本发明涉及一种具有偏心轴的单锥形钻头和用于油气钻井，采矿和其他地下钻井作业的复合锥体。 该钻头由头体和锥体组成。 锥形部分具有复合锥体的形状。 锥体的外圆周由圆锥体的后表面到锥体的顶部，延伸的计量表面，外圆锥表面和主锥体表面组成。 多个切割元件安装在每个锥体表面上。 头部主体下端的头颈部用于与锥体可旋转连接。 在磁头轴颈轴与钻头的轴线之间，沿锥体的旋转方向存在偏移值d。 在头部主体的与头颈部的偏移方向相反的位置处布置有量具垫。 量具垫配有插入件或耐磨合金表面，以防止钻头旋转，并防止头体磨损，并确保量具保护。 垃圾槽沿头部主体加工，喷嘴端口布置在头部主体的下斜面处，以确保切屑清除和有效的清洁效果。 本发明提高了钻头通过冲击破碎岩石的能力，用于硬地层中的特定用途。 钻头性能明显提高，整体钻井成本降低。

公开(公告)号：US20070163812A1

公开(公告)日：2007-07-19

申请号：US11709439

申请日：2007-02-22

申请人： James Overstreet ,  Robert Buske ,  John Bradford ,  Caleb Rickabaugh

发明人： James Overstreet ,  Robert Buske ,  John Bradford ,  Caleb Rickabaugh

IPC分类号： E21B10/08

CPC分类号： E21B10/08

摘要： An earth-boring bit has bit legs having hardfacing covering the majority of the outer surface. The hardfacing may have gaps at an area surrounding the ball plug and an area around a fixture dimple. The hardfacing may be multi-layer, with the layers differing in composition. Recesses may be located at the leading and trailing edges of the supporting metal so as to provide a thicker area of hardfacing at these corners. The supporting metal of the outer surface of the bit leg may also have an upper cylindrical section and a lower tapered section. The hardfacing has a constant outer diameter but will taper in thickness in the lower tapered section. The thickness of the hardfacing may also vary in a circumferential direction with a greater thickness over at least one of the corners.

摘要翻译： 钻孔钻头具有覆盖大部分外表面的耐磨面。 表面硬化在球塞周围的区域和夹具凹坑周围的区域可能具有间隙。 表面硬化可以是多层，组合不同。 凹部可以位于支撑金属的前缘和后缘处，以便在这些拐角处提供更厚的表面硬化面积。 钻头腿的外表面的支撑金属也可以具有上圆柱形部分和下锥形部分。 表面硬化具有恒定的外径，但在下锥形部分中的厚度将逐渐变细。 表面硬化的厚度也可以在圆周方向上变化，并且在至少一个拐角上具有更大的厚度。

公开(公告)号：US07152701B2

公开(公告)日：2006-12-26

申请号：US10920718

申请日：2004-08-17

申请人： Richard Butland ,  John J. Herman ,  Ronald Birne-Browne ,  Per Nese ,  Louis Loiselle ,  J. Daniel Belnap

发明人： Richard Butland ,  John J. Herman ,  Ronald Birne-Browne ,  Per Nese ,  Louis Loiselle ,  J. Daniel Belnap

IPC分类号： E21B10/08

CPC分类号： E21B10/5676 ,  E21B10/006 ,  E21B10/16 ,  E21B10/52

摘要： A roller cone drill bit includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the bearing journal. The single roller cone has a plurality of cutting elements, where at least one of the plurality of cutting elements is formed of an inner region that is at least partially surrounded by an outer region, where the inner region is more abrasive resistant than the outer region. Such an arrangement in a single roller cone bit allows the at least one cutting element to be “self-sharpening.”

摘要翻译： 滚子锥形钻头包括适于联接到钻柱的钻头体，从钻头体悬垂的轴承轴颈和可旋转地附接到轴承轴颈的单个滚子圆锥体。 单个辊筒具有多个切割元件，其中多个切割元件中的至少一个切割元件由至少部分地被外部区域包围的内部区域形成，其中内部区域比外部区域更具有耐磨性 。 在单个辊锥头中的这种布置允许至少一个切割元件“自锐化”。

公开(公告)号：US20060237235A1

公开(公告)日：2006-10-26

申请号：US11475448

申请日：2006-06-27

申请人： Lance Richman

发明人： Lance Richman

IPC分类号： E21B10/08

CPC分类号： E21B10/5676

摘要： A drill bit that includes a bit body, at least one roller cone attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on the at least one roller cone is disclosed. At least one of the plurality of cutting elements includes a first area defining a trailing edge, a second area proximate the first area defining a main wear surface, and a third area proximate the second area and defining a leading edge relief zone. Further, an insert for a drill bit that includes a contact portion adapted to contact an earth formation, the contact portion including a first area defining a relieved trailing edge, a second area defining a main wear surface, and a third area proximate the second area and defining a leading edge relief zone. Further, including an insert for a drill bit wherein a surface of the second area is a curved surface having a radius of curvature substantially equal to a radius of a borehole is also disclosed.

摘要翻译： 公开了一种钻头，其包括钻头体，附接到钻头体并能够相对于钻头体旋转的至少一个滚子锥体，以及设置在所述至少一个滚子锥体上的多个切割元件。 多个切割元件中的至少一个包括限定后缘的第一区域，接近限定主要磨损表面的第一区域的第二区域，以及接近第二区域的第三区域，并且限定前缘释放区域。 此外，一种用于钻头的插入件，其包括适于接触地层的接触部分，所述接触部分包括限定缓和后缘的第一区域，限定主要磨损表面的第二区域和邻近所述第二区域的第三区域 并定义前缘释放区。 此外，还公开了一种用于钻头的插入件，其中第二区域的表面是具有基本上等于钻孔半径的曲率半径的曲面。

公开(公告)号：US20050274549A1

公开(公告)日：2005-12-15

申请号：US10868511

申请日：2004-06-15

申请人： Zhou Yong ,  Jiaqing Yu

发明人： Zhou Yong ,  Jiaqing Yu

IPC分类号： E21B10/00 ,  E21B10/08 ,  E21B10/22 ,  E21B10/25 ,  F16J15/18

CPC分类号： E21B10/25

摘要： Disclosed is a seal assembly for dynamically sealing between rotatable members, such as employed to seal the rolling cone of a rock bit. One preferred assembly includes an energizer, first and second seal rings, and a cushioning ring having an L-shaped cross-section disposed about portions of one of the seal rings to seal and absorb impact loads and thereby protect the more-rigid seal rings.

摘要翻译： 公开了一种用于在可旋转构件之间动态密封的密封组件，例如用于密封岩石钻头的滚动锥体。 一个优选的组件包括激励器，第一和第二密封环以及具有L形横截面的缓冲环，所述缓冲环设置在一个密封环的大约部分上，以密封和吸收冲击载荷，从而保护更刚性的密封环。

公开(公告)号：US20050211474A1

公开(公告)日：2005-09-29

申请号：US10809644

申请日：2004-03-25

申请人： Don Nguyen ,  Terry Koltermann ,  Gregory Ricks ,  Mark Morris ,  Chris McCarty ,  Chih Lin

发明人： Don Nguyen ,  Terry Koltermann ,  Gregory Ricks ,  Mark Morris ,  Chris McCarty ,  Chih Lin

IPC分类号： E21B10/08

CPC分类号： E21B10/08

摘要： A gage scraper cleans mud from the gage surface of a rotary cone of a drill bit. The bit has a body having at least one leg depending therefrom, a bearing pin secured to each leg, and a rotary cutting cone mounted to the bearing pin. The cone has a conical gage surface. The gage scraper mounts on the inside of each leg and protrudes from the leg toward the cone into close proximity with the gage surface.

摘要翻译： 量具刮刀从钻头的旋转锥体的量规表面清除泥浆。 所述钻头具有至少一个从其悬挂的支脚的主体，固定到每个支腿的支承销以及安装在所述支承销上的旋转切割锥。 锥体具有锥形表面。 量规刮刀安装在每个腿的内侧，并从腿部朝向锥体突出，与计量表面紧密接近。

公开(公告)号：US20050103531A1

公开(公告)日：2005-05-19

申请号：US11019706

申请日：2004-12-20

申请人： Christopher Byrd

发明人： Christopher Byrd

IPC分类号： E21B10/08 ,  E21B10/22 ,  E21B10/25 ,  F16C19/16 ,  F16C33/58 ,  F16C33/78 ,  F16J15/32 ,  E21B10/00

CPC分类号： E21B10/25 ,  F16J15/3208 ,  F16J15/3216

摘要： A seal assembly for a shaft supporting a rotary element comprises a sealing ring having an inner radial surface in contact with a seal surface of the shaft. The sealing ring comprising a disc shaped integral radial lip normal to the inner radial surface. A disc shaped seal shield is assembled in sealing contact with a first surface of the integral disc shaped radial lip and also in sealing contact with a first radial surface of an annular seal groove. An energizer positioned in the annular seal groove is in contact with the bottom surface of the groove and a second radial surface of the groove. The energizer exerts a radial force on the outer radial surface of the sealing ring and a lateral force on the integral radial lip of the sealing ring.

摘要翻译： 用于支撑旋转元件的轴的密封组件包括具有与轴的密封表面接触的内部径向表面的密封环。 密封环包括垂直于内部径向表面的盘形整体径向唇缘。 圆盘形密封屏蔽件组装成与整体盘形径向唇缘的第一表面密封接触并且还与环形密封槽的第一径向表面密封接触。 定位在环形密封槽中的加力器与凹槽的底表面和凹槽的第二径向表面接触。 激励器在密封环的外径向表面上施加径向力，并在密封圈的整体径向唇缘上施加横向力。