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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：US5894889A
公开(公告)日：1999-04-20
申请号：US916932
申请日：1997-08-21
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
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 fill 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。 减小直径的切割表面在第一接触区域处接触造斜斜坡，并且填充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：US5771972A
公开(公告)日：1998-06-30
申请号：US642829
申请日：1996-05-03
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
摘要： The mill assembly and whipstock assembly include a mill having a tapered end which engages a ramp of the whipstock assembly. 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： 磨机组件和造斜器组件包括具有锥形端部的磨机，其接合造斜器组件的坡道。 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：US20130175095A1
公开(公告)日：2013-07-11
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
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在打开位置。
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公开(公告)号：US07757787B2
公开(公告)日：2010-07-20
申请号：US11669593
申请日：2007-01-31
IPC分类号： E21B10/32
CPC分类号： E21B10/322 , E21B10/325 , E21B21/10
摘要： An expandable drilling apparatus includes a main body comprising a central bore and at least one axial recess configured to receive an arm assembly operable between a retracted position and an extended position, a biasing member to urge the arm assembly into the retracted position, a drive position configured to thrust the arm assembly into the extended position when in communication with drilling fluids in the central bore, a selector piston translatable between an open position and a closed position, wherein the selector piston is thrust into the open position when a pressure of the drilling fluids exceeds an activation value, wherein the drilling fluids are in communication with the drive piston when the selector piston is in the open position, and a selector spring configured to thrust the selector piston into the closed position when the pressure of the drilling fluids falls below a reset value.
摘要翻译： 一种可膨胀钻孔设备包括：主体，其包括中心孔和至少一个轴向凹槽，所述至少一个轴向凹槽构造成容纳在缩回位置和延伸位置之间可操作的臂组件;偏压构件，用于将臂组件推入缩回位置;驱动位置 构造成当与中心孔中的钻井流体连通时将臂组件推入伸出位置，可在打开位置和关闭位置之间平移的选择活塞，其中当钻孔压力时，选择活塞被推入打开位置 液体超过激活值，其中当选择活塞处于打开位置时，钻井液与驱动活塞连通;以及选择器弹簧，其构造成当钻井液的压力下降时推动选择活塞进入关闭位置 一个复位值。
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公开(公告)号：US07373988B2
公开(公告)日：2008-05-20
申请号：US10932766
申请日：2004-09-02
IPC分类号： E21B23/01
摘要： A liner running system for placing a liner in a well bore comprises a latch sleeve connected to the liner and a running tool releasably attached to the latch sleeve. The latch sleeve has a wall thickness substantially the same as the wall thickness of the liner, and the running tool has an outer diameter less than or equal to the inner diameter of the liner. The latch sleeve may be connected into the liner at any location along its length. The running tool is releasable from the latch sleeve via hydraulic actuation or mechanical actuation. Optionally, a swivel may be connected to the liner. The swivel has a wall thickness substantially the same as the wall thickness of the liner. The method for lowering the liner into the well bore via the liner running system comprises rotating the liner, pushing the liner, pulling the liner, or a combination thereof.
摘要翻译： 用于将衬套放置在井眼中的衬管运行系统包括连接到衬套的闩锁套筒和可释放地附接到闩锁套筒的运行工具。 闩锁套筒具有与衬套的壁厚基本相同的壁厚，并且运行工具的外径小于或等于衬套的内径。 闩锁套筒可以沿其长度的任何位置连接到衬垫中。 运行工具可通过液压致动或机械致动从闩锁套筒释放。 可选地，旋转件可以连接到衬套。 旋转件具有与衬套的壁厚基本相同的壁厚。 通过衬管运行系统将衬套降低到井眼中的方法包括旋转衬套，推动衬套，拉动衬套或其组合。
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公开(公告)号：US07178589B2
公开(公告)日：2007-02-20
申请号：US10719199
申请日：2003-11-21
CPC分类号： E21B23/01
摘要： A downhole tool is disclosed that functions as an expandable anchoring tool, capable of passing through a restricted wellbore diameter while in a collapsed position and thereafter translating to an expanded position for grippingly engaging a larger wellbore diameter. An embodiment of the tool includes a body including a plurality of angled channels formed into a wall of the body and a plurality of moveable slips. The plurality of moveable slips translates along the plurality of angled channels between a collapsed position and an expanded position. The slips may include a plurality of extensions corresponding to and engaging the plurality of channels.
摘要翻译： 公开了一种用作可膨胀锚固工具的井下工具，其能够在处于折叠位置时通过受限制的井筒直径，然后平移到膨胀位置以夹紧地接合更大的井筒直径。 该工具的实施例包括主体，其包括形成在主体的壁中的多个成角度的通道和多个可移动的滑移。 多个可移动滑动件在折叠位置和展开位置之间沿着多个成角度的通道平移。 滑动件可以包括对应于并接合多个通道的多个延伸部。
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公开(公告)号：US07152698B2
公开(公告)日：2006-12-26
申请号：US10698748
申请日：2003-10-31
申请人： Charles H. Dewey
发明人： Charles H. Dewey
IPC分类号： E21B4/00
CPC分类号： F04C14/06 , E21B4/02 , E21B7/061 , E21B29/06 , F03B13/02 , F04C2/1071 , F04C13/008 , F04C2240/603
摘要： A lockable motor assembly for use in a well bore comprises a stator, a rotor rotatably mounted within the stator, and a selectively removable flow restriction means. The lockable motor assembly may further comprise holding means for rotationally fixing the rotor to the stator. The flow restriction means limits the flow rate of fluid downstream of the rotor, thereby substantially balancing hydraulic pressure above and below the stator.
摘要翻译： 用于井眼的可锁定电动机组件包括定子，可旋转地安装在定子内的转子和可选择性地拆卸的流动限制装置。 可锁定电动机组件还可以包括用于将转子旋转地固定到定子的保持装置。 流量限制装置限制了转子下游流体的流速，从而基本上平衡了定子上方和下方的液压。
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公开(公告)号：US06732817B2
公开(公告)日：2004-05-11
申请号：US10078067
申请日：2002-02-19
申请人： Charles H. Dewey , Wei Xu
发明人： Charles H. Dewey , Wei Xu
IPC分类号： E21B728
CPC分类号： E21B7/067 , E21B10/322 , E21B17/1014
摘要： A downhole tool that functions as an underreamer, or alternatively, as a stabilizer in an underreamed borehole. The tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool alternates between collapsed and expanded positions in response to differential fluid pressure between the flowbore and the wellbore annulus. In one embodiment, the tool moves automatically in response to differential pressure. In a second embodiment, the tool must be selectively actuated before it is moveable. When the tool expands, the arms are preferably translated axially upwardly, while simultaneously being extended radially outwardly from the body. The expanded tool diameter is adjustable at the surface without changing components. The arms may include borehole engaging pads that comprise cutting structures or wear structures or both, depending upon the function of the tool.
摘要翻译： 一个井下工具，作为一个扩孔器，或作为一个稳定器作为一个扩孔钻孔。 该工具包括设置在主体内的一个或多个可移动臂，其具有与井筒环流体连通的通孔。 响应于流道和井筒环之间的不同流体压力，该工具在折叠和膨胀位置之间交替。 在一个实施例中，工具响应差压自动移动。 在第二实施例中，工具必须在其可移动之前被选择性地致动。 当工具膨胀时，臂优选地轴向向上平移，同时从身体径向向外延伸。 扩大的刀具直径在表面是可调节的，而不改变部件。 取决于工具的功能，臂可以包括包括切割结构或磨损结构或两者的钻孔接合垫。
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公开(公告)号：US06612383B2
公开(公告)日：2003-09-02
申请号：US09523496
申请日：2000-03-10
申请人： Praful C. Desai , Charles H. Dewey
发明人： Praful C. Desai , Charles H. Dewey
IPC分类号： E21B2906
CPC分类号： E21B10/567 , E21B10/54 , E21B29/06
摘要： A dual function drag bit is used in a method for both milling well casing or liner and subsequently drilling rock formation without the sequential removal of a milling assembly and replacement with a drilling assembly. The method employs a cutting tool that is capable of both milling steel pipe casing in a well bore and subsequently drilling rock formation outside the well bore after passing through the casing. In one embodiment an insert embedded into the surface of the cutting tool comprises at least an outer layer, such as cemented tungsten carbide, capable of milling steel casing, and at least a second layer, such as polycrystalline diamond, capable of drilling formation, the two layers being bonded together and to a carbide substrate. In another embodiment, inserts with a polycrystalline diamond cutting face for drilling rock formation are in parallel with cemented tungsten carbide cutters for milling steel casing.
摘要翻译： 在一种用于铣削井套管或衬套以及随后钻探岩层的方法中使用双功能拖曳钻头，而不用连续地移除铣削组件并用钻井组件更换。 该方法采用能够在井眼中铣削钢管套管并随后在穿过套管之后在井眼之外钻出岩层的切削工具。 在一个实施例中，嵌入到切削工具的表面中的插入件至少包括能够铣削钢壳的外层，例如硬质合金碳化钨，以及能够钻探成形的至少第二层，例如多晶金刚石， 两层结合在一起，并与碳化物基体结合。 在另一个实施例中，具有用于钻井成岩的多晶金刚石切割面的刀片与用于铣削钢壳体的胶合碳化钨切割器平行。
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