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公开(公告)号：US08640792B2
公开(公告)日：2014-02-04
申请号：US12956889
申请日：2010-11-30
摘要： A bottom hole assembly to directionally drill a subterranean formation includes a drill bit, a stabilizer assembly located proximate to and behind the drill bit, a drilling assembly comprising a drive mechanism and a directional mechanism, and a flex housing integral with the drilling assembly.
摘要翻译： 用于定向钻地下地层的底孔组件包括钻头，位于钻头附近和后面的稳定器组件，包括驱动机构和定向机构的钻孔组件以及与钻孔组件成一体的挠性壳体。
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公开(公告)号：US20120325480A1
公开(公告)日：2012-12-27
申请号：US13492016
申请日：2012-06-08
IPC分类号： E21B29/00
CPC分类号： E21B29/005 , E21B10/32 , E21B10/322
摘要： A dual string section milling tool includes a cutting block deployed in an axial recess in a tool body. The cutting block is configured to extend radially outward from and retract radially inward towards the tool body. The cutting block is further configured to remove a cement layer in a wellbore. The dual string section milling tool further includes a milling blade deployed in an axially slot disposed in the cutting block. The milling blade is configured to extend radially outward from and inwards towards the cutting block. The milling blade is further configured to cut and mill a section of casing string. The dual string section milling tool may be further configured to simultaneously remove cement and mill a wellbore tubular.
摘要翻译： 双串式铣削工具包括一个展开在工具主体的轴向凹槽中的切割块。 切割块构造成径向向外延伸并朝向工具主体径向向内缩回。 切割块进一步构造成去除井眼中的水泥层。 双串式铣削工具还包括设置在切割块中的轴向狭槽中的铣刀。 铣刀构造成朝向切割块径向向外并向内延伸。 铣刀还被构造成切割和铣削套管柱的一部分。 双串段铣刀可以进一步构造成同时移除水泥并研磨井眼管。
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公开(公告)号：US07861802B2
公开(公告)日：2011-01-04
申请号：US11334707
申请日：2006-01-18
摘要： A bottom hole assembly to directionally drill a subterranean formation includes a drill bit, a stabilizer assembly located proximate to and behind the drill bit, a drilling assembly comprising a drive mechanism and a directional mechanism, and a flex member. Optionally, the flex member may be located between the drilling assembly and the stabilizer assembly or an integral to a housing of the drilling assembly. A method to drill a formation includes positioning a stabilizer assembly behind a drill bit and positioning a flex member between an output shaft of a drilling assembly and the stabilizer assembly. The method preferably includes rotating the drill bit, stabilizer assembly, and flex member with a drilling assembly and directing the trajectory of the drill bit and stabilizer assembly with a directional mechanism of the drilling assembly.
摘要翻译： 用于定向钻地层的井底组件包括钻头，位于钻头附近和后方的稳定器组件，包括驱动机构和定向机构的钻孔组件以及挠性构件。 可选地，柔性构件可以位于钻井组件和稳定器组件之间，或者与钻井组件的壳体成一体。 钻探地层的方法包括将稳定器组件定位在钻头后面并将挠性构件定位在钻井组件的输出轴和稳定器组件之间。 该方法优选地包括用钻孔组件旋转钻头，稳定器组件和挠性构件，并且用钻孔组件的定向机构引导钻头和稳定器组件的轨迹。
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公开(公告)号：US07597158B2
公开(公告)日：2009-10-06
申请号：US12140833
申请日：2008-06-17
IPC分类号： E21B10/32
CPC分类号： E21B10/322 , E21B10/325 , E21B21/10
摘要： An expandable drilling apparatus is deployed upon a distal end of a drillstring and includes a cutting head and a substantially tubular main body adjacent the cutting head providing a plurality of axial recesses configured to receive arm assemblies configured to translate between a retracted and an extended position. A flow switch actuates the arm assemblies when a drilling fluid pressure exceeds an activation value and the drilling apparatus includes a biasing member to reset the arm assemblies when the drilling fluid pressure falls below a reset value.
摘要翻译： 可扩展钻孔设备部署在钻柱的远端上，并且包括切割头和与切割头相邻的基本上管状的主体，其提供多个轴向凹槽，其构造成接收构造成在缩回位置和伸出位置之间平移的臂组件。 当钻井液压力超过激活值时，流量开关致动臂组件，并且当钻井液压力低于复位值时，钻井设备包括偏置构件以复位臂组件。
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公开(公告)号：US07377328B2
公开(公告)日：2008-05-27
申请号：US11069282
申请日：2005-03-01
IPC分类号： E21B7/08
CPC分类号： E21B23/01
摘要： An expandable downhole anchoring tool positionable within a wellbore for use in cooperation with drilling equipment comprises a body including a plurality of angled channels formed into a wall thereof, and a plurality of moveable slips disposed in the same radial plane around the body, wherein the plurality of moveable slips are hydraulically translatable along the plurality of angled channels between a collapsed position and an expanded position. A method of setting an expandable anchor within a wellbore comprises running the anchor into the wellbore in a collapsed position, and expanding the anchor into gripping engagement with the wellbore, wherein the anchor is adapted to expand up to at least 1.5 times a collapsed diameter of the anchor.
摘要翻译： 可与钻井设备配合使用的用于与钻井设备配合使用的可在井眼内定位的可扩展井下锚固工具包括：主体，其包括形成在其壁中的多个成角度的通道;以及多个可移动的滑动件，其布置在围绕所述主体的相同的径向平面中， 可移动滑移件可在折叠位置和展开位置之间沿着多个成角度的通道液压地平移。 将可膨胀锚固件设置在井筒内的方法包括将锚固件在折叠位置运行到井筒中，并且将锚固件膨胀成与井眼夹紧接合，其中锚固件适于膨胀至至少1.5倍的塌缩直径 锚点。
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公开(公告)号：US07207401B2
公开(公告)日：2007-04-24
申请号：US10684629
申请日：2003-10-14
申请人： Charles H. Dewey , Praful C. Desai
发明人： Charles H. Dewey , Praful C. Desai
IPC分类号： E21B29/06
摘要： The side tracking system includes a window mill having a full diameter cutting surface and a reduced diameter tapered cutting surface and a whipstock having a ramp engaging the reduced diameter cutting surface. The materials of the whipstock have a first cutablity and the materials of the casing have a second cutability. The reduced diameter cutting surface contacts the whipstock ramp at a first contact area and the full diameter cutting surface contacts the wall of the casing at a second contact area. As weight is applied to the mill, there is a first contact stress at the first contact area and a second contact stress at the second contact area. A cutability ratio is the first cutability divided by the second cutability and a contact stress ratio is the first contact stress divided by the second contact stress. The mill cuts the casing rather than the whipstock by maintaining the product of the cutability ratio and the contact stress ratio less than one. Preferably the height of the reduced diameter cutting surface is greater than the height of the full diameter cutting surface. The ramp includes a plurality of surfaces having different angles whereby the rate of deflection of the mill by the whipstock varies as the mill is lowered into the borehole. In particular, the ramp of the whipstock includes two surfaces having steep angles, one steep angled surface causing the mill to punch through the wall of the casing and the second steep angle surface moving the center of the mill across the wall of the casing.
摘要翻译： 侧跟踪系统包括具有全直径切割表面和减小直径的锥形切割表面的窗口磨机和具有接合减小直径的切割表面的斜面的造斜器。 造斜器的材料具有第一可切割性，并且壳体的材料具有第二可切割性。 直径减小的切割表面在第一接触区域处接触造斜斜坡，并且全直径切割表面在第二接触区域处接触壳体的壁。 当重量施加到轧机时，在第一接触区域处存在第一接触应力和在第二接触区域处的第二接触应力。 可切割性比率是第一可切割性除以第二可切割性，接触应力比是第一接触应力除以第二接触应力。 研磨机通过将可切割性比和接触应力比的乘积维持在1以下，切割套管而不是造斜器。 优选地，直径减小的切割表面的高度大于全直径切割表面的高度。 斜坡包括多个具有不同角度的表面，由此，当研磨机下降到钻孔中时，造斜器的磨机的偏转速度发生变化。 特别地，造斜器的坡道包括具有陡峭角度的两个表面，一个陡峭的倾斜表面，使得磨机穿过壳体的壁，并且第二陡峭角度表面使轧机的中心移动穿过壳体的壁。
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公开(公告)号：US06648069B2
公开(公告)日：2003-11-18
申请号：US10171215
申请日：2002-06-12
申请人： Charles H. Dewey , John E. Campbell , Wei Xu
发明人： Charles H. Dewey , John E. Campbell , Wei Xu
IPC分类号： E21B4400
CPC分类号： E21B7/061 , E21B23/01 , E21B23/04 , E21B23/06 , E21B29/06 , E21B33/12 , E21B41/0035 , E21B47/024 , E21B47/04 , E21B47/09
摘要： The well reference apparatus and method of the present invention includes a reference member preferably permanently installed within the borehole at a preferred depth and orientation in one trip into the well. The reference member provides a permanent reference for the location of all operations, particularly in a multi-lateral well. The assembly of the present invention includes disposing the reference member on the end of a pipe string. An orienting tool such as an MWD collar is disposed in the pipe string above the reference member. This assembly is lowered into the borehole on the pipe string. Once the preferred depth is attained, the MWD is activated to determine the orientation of the reference member. If the reference member is not oriented in the preferred direction, the pipe string is rotated to align the reference member in the preferred direction. This process is repeated for further corrective action and to verify the proper orientation of the reference member. Upon achieving the proper orientation of the reference member, the reference member is set within the borehole and the pipe string is disconnected from the reference member and retrieved.
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公开(公告)号：US06648068B2
公开(公告)日：2003-11-18
申请号：US09303049
申请日：1999-04-30
申请人： Charles H. Dewey , James E. Saylor, III , Bruce D. Swearingen , Andrew MacDonald Robin , Alexander William Dawson , Gregory S. Nairn
发明人： Charles H. Dewey , James E. Saylor, III , Bruce D. Swearingen , Andrew MacDonald Robin , Alexander William Dawson , Gregory S. Nairn
IPC分类号： E03B311
摘要： The side tracking system includes a window mill having a full diameter cutting surface and a reduced diameter tapered cutting surface and a whipstock having a ramp engaging the reduced diameter cutting surface. The materials of the whipstock have a first cutablity and the materials of the casing have a second cutability. The reduced diameter cutting surface contacts the whipstock ramp at a first contact area and the full diameter cutting surface contacts the wall of the casing at a second contact area. As weight is applied to the mill, there is a first contact stress at the first contact area and a second contact stress at the second contact area. A cutability ratio is the first cutability divided by the second cutability and a contact stress ratio is the first contact stress divided by the second contact stress. The mill cuts the casing rather than the whipstock by maintaining the product of the cutability ratio and the contact stress ratio less than one. Preferably the height of the reduced diameter cutting surface is greater than the height of the full diameter cutting surface. The ramp includes a plurality of surfaces having different angles whereby the rate of deflection of the mill by the whipstock varies as the mill is lowered into the borehole. In particular, the ramp of the whipstock includes two surfaces having steep angles, one steep angled surface causing the mill to punch through the wall of the casing and the second steep angle surface moving the center of the mill across the wall of the casing.
摘要翻译： 侧跟踪系统包括具有全直径切割表面和减小直径的锥形切割表面的窗口磨机和具有接合减小直径的切割表面的斜面的造斜器。 造斜器的材料具有第一可切割性，并且壳体的材料具有第二可切割性。 直径减小的切割表面在第一接触区域处接触造斜斜坡，并且全直径切割表面在第二接触区域处接触壳体的壁。 当重量施加到轧机时，在第一接触区域处存在第一接触应力和在第二接触区域处的第二接触应力。 可切割性比率是第一可切割性除以第二可切割性，接触应力比是第一接触应力除以第二接触应力。 轧机通过将可切割性比和接触应力比的乘积维持在1以下，切割套管而不是造斜器。 优选地，直径减小的切割表面的高度大于全直径切割表面的高度。 斜坡包括多个具有不同角度的表面，由此，当研磨机下降到钻孔中时，造斜器的磨机的偏转速度发生变化。 特别地，造斜器的坡道包括具有陡峭角度的两个表面，一个陡峭的倾斜表面，使得磨机穿过壳体的壁，并且第二陡峭角度表面使轧机的中心移动穿过壳体的壁。
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公开(公告)号：US06499538B2
公开(公告)日：2002-12-31
申请号：US09288401
申请日：1999-04-08
申请人： Charles H. Dewey , John E. Campbell
发明人： Charles H. Dewey , John E. Campbell
IPC分类号： E21B2906
摘要： Methods and apparatus are described for forming a window of optimum dimensions in casing wall. A window of maximum width is cut when the center line of the mill tool is located inside of the inner diameter of the casing where a maximum amount of casing is drilled away by the mill tool. A whipstock is described which deviates the mill tool outwardly so that the center line of the mill tool is in approximately this position. The whipstock then maintains the mill tool at this approximate location until a window of desired length is cut having a substantially maximum width.
摘要翻译： 描述了用于在套管壁中形成最佳尺寸的窗口的方法和装置。 当铣刀的中心线位于壳体内径的最大宽度的窗口内时，铣刀的最大量的壳体被钻出。 描述了一种造斜器，其将铣刀工具向外偏离，使得磨机工具的中心线处于该位置。 然后，造斜器将磨机工具保持在该大致位置，直到切割具有基本上最大宽度的期望长度的窗口。
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公开(公告)号：US08967300B2
公开(公告)日：2015-03-03
申请号：US13345400
申请日：2012-01-06
申请人： Charles H Dewey , John E. Campbell , Daniel LeVon
发明人： Charles H Dewey , John E. Campbell , Daniel LeVon
IPC分类号： E21B10/32
CPC分类号： E21B10/322 , E21B21/103 , E21B34/10 , E21B2034/007
摘要： A downhole tool includes a pressure activated flow switch for selectively actuating and deactuating a device, such as a reaming block. The flow switch is deployed external to the flow bore and includes a flow piston configured to reciprocate between axially opposed open and closed positions such that the device is actuated when the flow piston is in the open position and deactuated when the flow piston is in the closed position. The flow piston is configured to translate from the closed position to the open position when a differential pressure exceeds a predetermined threshold. The flow piston may be further configured to remain in the open position at differential pressures less than the threshold.
摘要翻译： 井下工具包括用于选择性地致动和停用诸如铰孔块的装置的压力启动流量开关。 流动开关被布置在流动孔的外部，并且包括流动活塞，流动活塞构造成在轴向相对的打开和关闭位置之间往复运动，使得当流动活塞处于打开位置时该装置被致动，并且当流动活塞处于关闭状态时停止运动 位置。 流动活塞构造成当压差超过预定阈值时从关闭位置平移到打开位置。 流动活塞可进一步构造成在小于阈值的差压下保持打开位置。
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