公开(公告)号：US20090272582A1

公开(公告)日：2009-11-05

申请号：US12114537

申请日：2008-05-02

申请人： Ron D. McCORMICK ,  Rudolf Carl PESSIER ,  Don Q. NGUYEN ,  Tim King MARVEL ,  Matthew R. ISBELL ,  Anton F. ZAHRADNIK ,  Karlos B. CEPEDA ,  Michael Steven DAMSCHEN ,  Steve M. WINNON

发明人： Ron D. McCORMICK ,  Rudolf Carl PESSIER ,  Don Q. NGUYEN ,  Tim King MARVEL ,  Matthew R. ISBELL ,  Anton F. ZAHRADNIK ,  Karlos B. CEPEDA ,  Michael Steven DAMSCHEN ,  Steve M. WINNON

IPC分类号： E21B10/08

CPC分类号： E21B10/14 ,  E21B10/24 ,  E21B10/62 ,  Y10T29/49947 ,  Y10T29/49948 ,  Y10T29/49963

摘要： An earth-boring bit comprising a bit body is cofigured at its upper end for connection into a drillstring. A fixed blade depends axially downwardly from the bit body. An axially extending slot is formed in the bit body adjacent the fixed blade. A bit leg is received and retained in the slot by engagement between the slot and correspondingly shaped bit leg, wherein the bit leg cannot be removed from the slot except by axial movement relative to the bit body. A rolling cutter is secured to the bit leg at its lower extent. A fastener secures the bit leg against movement relative to the bit body and extends through oblong apertures in the bit leg and into the bit body, wherein the bit leg can be moved axially relative to the bit body to adjust the projection of the rolling cutter relative to the fixed blade. The slot defines a pair of generally opposed sides connected by a third side, the generally opposed sides being inclined toward one another to define a dovetail that corresponds with the shape of the bit leg. The bit body further comprises a shank that is configured for connection into the drillstring at its upper extent and has a generally cylindrical receptacle formed in its lower extent; and a bit body portion having a generally cylindrical upper extent, the receptacle being and dimensioned to receive the upper extent of the bit body, wherein the shank and bit body portions are secured together by welding.

摘要翻译： 包括钻头体的钻孔位在其上端处被配置以连接到钻柱中。 固定刀片从钻头体轴向向下。 位于固定刀片附近的钻头体中形成有轴向延伸的槽。 一个小腿被接收并通过槽和对应的成形的位腿之间的接合保持在槽中，其中除了通过相对于钻头体的轴向运动之外，钻头腿不能从槽中移除。 滚刀在其较小的范围内固定在钻头腿上。 紧固件固定钻头腿相对于钻头体的运动，并且延伸穿过钻头腿中的长方形孔并进入钻头体，其中钻头腿可以相对于钻头体轴向移动以调节滚刀相对的突起 到固定刀片。 狭槽限定由第三侧连接的一对大致相对的侧面，大致相对的侧面相互倾斜以限定与钻头腿的形状对应的燕尾榫。 钻头体还包括柄，其构造成用于在其上部部分处连接到钻柱中并且具有形成在其下部范围中的大致圆柱形的容器; 并且具有大致圆柱形的上部的一部分主体部分，该容器的尺寸被设计成可容纳钻头体的上部范围，其中柄部和钻头本体部分通过焊接固定在一起。

公开(公告)号：US07370711B2

公开(公告)日：2008-05-13

申请号：US11203863

申请日：2005-08-15

申请人： Amardeep Singh

发明人： Amardeep Singh

IPC分类号： E21B10/08 ,  E21B10/18

CPC分类号： E21B10/16

摘要： A rolling cone drill bit including multiple cones with regions of intermeshing and non-intermeshing cutter elements. In the non-intermeshed regions, an array of cutter elements is disposed about the cone surface in a non-circumferential arrangement with the cutter elements being mounted at differing radial distances from the bit axis. This non-circumferential arrangement, which may be a spiral, multiple spirals, other patterns of offset cutter elements, or a random arrangement, provides a composite cutting profile having substantial width and bottomhole coverage and is free of ridge-producing voids. In certain embodiments, the composite cutting profiles of the arrays at least partially overlap, and may be arranged to cover a portion of or the entire non-intermeshed region on the cones.

摘要翻译： 一种滚动锥钻头，包括具有啮合区域和非啮合切割元件的多个锥体。 在非相互啮合的区域中，切割器元件的阵列以非周向布置围绕锥体表面设置，其中刀具元件以与钻头轴线不同的径向距离安装。 这种非圆周布置（其可以是螺旋状，多个螺旋形的）其它图案的偏置切割器元件或随机布置提供了具有实质宽度和井底覆盖度并且没有产生凸起的空隙的复合切割轮廓。 在某些实施例中，阵列的复合切割轮廓至少部分地重叠，并且可以布置成覆盖锥体上的一部分或整个非啮合区域。

公开(公告)号：US20080017419A1

公开(公告)日：2008-01-24

申请号：US11844821

申请日：2007-08-24

申请人： Craig Cooley ,  Timothy Sexton ,  S. Peterson ,  Jeffrey Lund ,  Christopher Johnson

发明人： Craig Cooley ,  Timothy Sexton ,  S. Peterson ,  Jeffrey Lund ,  Christopher Johnson

IPC分类号： E21B10/00 ,  E21B10/08 ,  E21B10/36 ,  E21B7/00

CPC分类号： E21B10/42 ,  B23B27/12 ,  E21B10/08 ,  E21B10/55 ,  E21B10/567 ,  E21B10/62 ,  E21B2010/545

摘要： A subterranean drilling system may include a drill string and a rotary drill bit coupled to the drill string. The rotary drill bit may include a bit body and a cutting element coupled to the bit body, with the cutting element being structured to rotate in response to torque applied to the cutting element. The system also may include a cam assembly coupled to the drill string, a cam follower assembly in contact with a cam surface of the cam assembly, and a torque-applying structure coupled to the cam follower assembly. The torque-applying structure may be configured to apply torque to the cutting element in response to relative rotation between the cam assembly and the cam follower assembly.

摘要翻译： 地下钻井系统可以包括钻柱和连接到钻柱的旋转钻头。 旋转钻头可以包括钻头体和联接到钻头体的切割元件，其中切割元件构造成响应于施加到切割元件的扭矩而旋转。 该系统还可以包括联接到钻柱的凸轮组件，与凸轮组件的凸轮表面接触的凸轮从动件组件和联接到凸轮从动件组件的扭矩施加结构。 扭矩施加结构可以被配置为响应于凸轮组件和凸轮从动件组件之间的相对旋转而向切割元件施加扭矩。

公开(公告)号：US07316281B2

公开(公告)日：2008-01-08

申请号：US10938068

申请日：2004-09-10

申请人： Mohammed Boudrare ,  Prabhakaran K. Centala

发明人： Mohammed Boudrare ,  Prabhakaran K. Centala

IPC分类号： E21B10/36 ,  E21B10/08

CPC分类号： E21B10/086 ,  E21B10/08 ,  E21B10/16

摘要： A two-cone drill bit that exhibits improved stability. In one embodiment, the two-cone drill bit has a first and a second roller cone arranged to have a cone separation angle between about 145 degrees and about 166 degrees. In some embodiments, the two-cone drill bit has a plurality of cutting elements arranged on the roller cones such that a bottom hole coverage greater than about 17 percent is achieved per revolution of the two-cone drill bit.

摘要翻译： 双锥钻头表现出改善的稳定性。 在一个实施例中，双锥钻头具有布置成具有约145度至约166度之间的锥形分离角度的第一和第二辊锥。 在一些实施例中，双锥钻头具有布置在滚子锥体上的多个切割元件，使得每一圆锥钻头实现了大于约17％的底孔覆盖率。

公开(公告)号：US20070215389A1

公开(公告)日：2007-09-20

申请号：US11687472

申请日：2007-03-16

申请人： Nuno Da Silva ,  Valerie Sillen ,  Nicolas Luyckx

发明人： Nuno Da Silva ,  Valerie Sillen ,  Nicolas Luyckx

IPC分类号： E21B10/08

CPC分类号： E21B10/42

摘要： A matrix drill bit and method of manufacturing a matrix bit having back raked cutting elements is disclosed. In one aspect, a matrix drill bit for well drilling includes a matrix bit body that has a front area in a direction of drilling and two or more diamond impregnated cutting blades protruding from the front area of the matrix bit body. The cutting blades each have a front external surface protruding from the front area of the matrix bit body and present a plurality of back raked downhole interface surfaces in the direction of drilling. The downhole interface surfaces span a leading face and a trailing face where the leading face extends to a first height and the trailing face extends to a second height and the first height is greater than the second height.

摘要翻译： 公开了一种矩阵钻头和制造具有背斜切割元件的矩阵钻头的方法。 在一个方面，用于钻井的矩阵钻头包括矩阵钻头体，其具有在钻孔方向上的前区域和从矩阵钻头体的前部区域突出的两个或多个金刚石浸渍切割刀片。 切割刀片各自具有从矩阵钻头体的前部区域突出的前部外表面，并在钻孔方向上呈现多个后倾的井下界面表面。 井下接口表面跨越前导面和后表面，其中前表面延伸到第一高度，并且后表面延伸到第二高度，并且第一高度大于第二高度。

公开(公告)号：US20070144788A1

公开(公告)日：2007-06-28

申请号：US10575994

申请日：2004-02-17

申请人： Richard Davis

发明人： Richard Davis

IPC分类号： E01C7/32 ,  E21B10/08

CPC分类号： E02D29/1409 ,  E01C23/06 ,  E01C23/0885 ,  E02D29/12

摘要： Apparatus and method of setting access covers to grade wherein the apparatus includes rubblizing bits and a vacuum, the first rubblizing bit having a central core with attached carriers for teeth to grind the underlying material into small pieces, a second rubblizing bit to rubblize below the ring of the access, a third bit for trimming a step for a T-lock, and a fourth bit for milling around an access ring for resurfacing and the steps of rubblizing down to the area of the bottom of the ring and sucking out the material by vacuum, settting the height of the ring and cover, trimming a step for a T-lock, and milling around the ring and cover a selected distance.

摘要翻译： 设置和设置入口盖的方法，其中设备包括钻石钻头和真空，第一碎石钻头具有中心芯，其具有附接的用于齿的载体以将下面的材料研磨成小块，第二个摩擦钻头在环下方摩擦 的通道，用于修整T形锁的步骤的第三位，以及用于在接近环周围铣削表面的第四位，以及将环绕到环的底部的区域进行摩擦的步骤，并通过 真空，设置环和盖的高度，修剪T形锁的步骤，并在环周围铣削并覆盖选定的距离。

公开(公告)号：US20070095574A1

公开(公告)日：2007-05-03

申请号：US10580710

申请日：2004-11-26

申请人： Jean-Michel Savignat

发明人： Jean-Michel Savignat

IPC分类号： E21B10/08

CPC分类号： E21B17/1085 ,  E21B10/32 ,  E21B10/42

摘要： A method is provided for removing a body of selected material from the interior of a casing extending into a borehole formed in an earth formation. The method comprises lowering a drill bit for further drilling of the borehole, into the casing, the drill bit having a longitudinal axis of rotation during operation, the drill bit comprising rock cutting means, at least one protection member for protecting the inner surface of the casing from contact with the rock cutting means, each protection member being adapted to remove said selected material from the interior of the casing and being radially movable towards the inner surface of the casing, and control means for applying a radially outward force of controlled magnitude to the protection member. The drill bit is rotated in the casing, and the control means is operated so as to apply said radially outward force of controlled magnitude to the protection member.

摘要翻译： 提供一种用于从延伸到形成于地层中的井眼的壳体内部移除所选材料的主体的方法。 该方法包括降低钻头以进一步钻孔，进入套管，钻头在操作期间具有纵向旋转轴线，钻头包括岩石切割装置，至少一个保护构件，用于保护钻孔的内表面 壳体与岩石切割装置接触，每个保护构件适于从壳体的内部移除所选择的材料并且可朝向壳体的内表面径向移动;以及控制装置，用于将受控量级的径向向外的力施加到 保护成员。 钻头在壳体中旋转，并且控制装置被操作以将受控幅度的所述径向向外的力施加到保护构件。

公开(公告)号：US20060260847A1

公开(公告)日：2006-11-23

申请号：US11494992

申请日：2006-07-28

申请人： Alan Lockstedt ,  Gary Portwood ,  Scott McDonough

发明人： Alan Lockstedt ,  Gary Portwood ,  Scott McDonough

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 gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.

公开(公告)号：US20060260845A1

公开(公告)日：2006-11-23

申请号：US11382571

申请日：2006-05-10

申请人： Simon Johnson

发明人： Simon Johnson

IPC分类号： E21B10/08

CPC分类号： E21B10/54 ,  E21B10/42 ,  E21B10/43

摘要： A drill bit comprises a bit body having a plurality of upstanding main blades formed thereon. The main blades have a plurality cutting elements mounted thereon, and they are shaped such that a cutting profile of the bit includes a nose portion, an inner cone region located radially inwards of the nose portion and an outer region located radially outwards of the nose portion. The bit further has at least one additional blade. The additional blade carrying cutting elements located radially inwards of the outer region of the cutting profile, but being substantially free of cutting elements located in the outer region of the cutting profile.

摘要翻译： 钻头包括具有形成在其上的多个直立主刀片的钻头体。 主叶片具有安装在其上的多个切割元件，并且它们被成形为使得钻头的切割轮廓包括鼻部，位于鼻部的径向向内的内锥形区域和位于鼻部的径向向外的外部区域 。 该位进一步具有至少一个附加刀片。 附加刀片承载切割元件位于切割轮廓的外部区域的径向内侧，但是基本上没有位于切割轮廓的外部区域中的切割元件。

公开(公告)号：US06988569B2

公开(公告)日：2006-01-24

申请号：US11032320

申请日：2005-01-10

申请人： Alan W. Lockstedt ,  Gary R. Portwood ,  Scott D. McDonough

发明人： Alan W. Lockstedt ,  Gary R. Portwood ,  Scott D. McDonough

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。