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21. 发明授权

US06732817B2 Expandable underreamer/stabilizer 有权
标题翻译：可扩展的畅通器/稳定器
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。

22. 发明授权

US06612383B2 Method and apparatus for milling well casing and drilling formation 有权
标题翻译：用于铣削井套管和钻井成形的方法和装置
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。

23. 发明授权

US06378632B1 Remotely operable hydraulic underreamer 有权
标题翻译：可远程操作的液压扩孔器
公开(公告)号：US06378632B1
公开(公告)日：2002-04-30
申请号：US09428803
申请日：1999-10-28
申请人： Charles H. Dewey , James E. Saylor
发明人： Charles H. Dewey , James E. Saylor
IPC分类号： E21B728
CPC分类号： E21B10/61 , E21B10/18 , E21B10/322 , E21B10/345
摘要： An underreamer opens a borehole below a restriction that is larger than the restriction itself. The underreamer includes cutters which engage the formation by traversing outward and upward. The force pushing the cutters to the extended position is supplied by a piston built into each cutter support. Pressure acting on these pistons comes from the pressure differential between the annulus and drill string during circulation of drilling fluid. The cutters are supported on both sides of the cutting structure by arms that are supported by and in sliding contact with the body. A spring opposes the upward and outward motion of the cutter mechanism and returns the cutters to their collapsed position in the absence of differential pressure. The body of the tool incorporates by-pass ports for transmitting fluid through the tool to the remainder of the bottom hole assembly.
摘要翻译：一个扩张器打开一个大于限制本身的限制的钻孔。旁路器包括通过向外和向上穿过而形成的切割器。将切割器推到延伸位置的力由内置于每个切割器支架中的活塞提供。作用在这些活塞上的压力来自钻井液循环期间的环形和钻柱之间的压力差。切割器通过由主体支撑并与其滑动接触的臂支撑在切割结构的两侧。弹簧抵抗切割机构的向上和向外运动，并且在没有压差的情况下将切割器返回到它们的折叠位置。该工具的主体包括用于将流体通过工具传送到底部孔组件的其余部分的旁路端口。

24. 发明授权

US06289999B1 Fluid flow control devices and methods for selective actuation of valves and hydraulic drilling tools 有权
标题翻译：用于选择性地致动阀门和液压钻具的流体流量控制装置和方法
公开(公告)号：US06289999B1
公开(公告)日：2001-09-18
申请号：US09183692
申请日：1998-10-30
申请人： Charles H. Dewey , Wei Xu
发明人： Charles H. Dewey , Wei Xu
IPC分类号： E21B4400
CPC分类号： E21B23/006 , E21B23/08 , E21B34/06 , E21B34/10 , E21B47/18
摘要： Flow control devices and associated control methods are described for use with hydraulic tools, such as those in a drill string. The described flow control device is typically incorporated into a drill string and is selectively operable in either a flow-through mode or a valve control mode. In the valve control mode, fluid pressure is increased or decreased within the drill string to selectively actuate a valve which is associated with the flow control device. In the flow-through mode, fluid pressure may be increased or decreased without operating the valve. Techniques are described for selectively moving the flow control device between the flow-through mode and the valve control mode. Wellbore fluid pressure readings provide signals to a rig operator for selectively moving the device in this manner.
摘要翻译：流量控制装置和相关的控制方法被描述用于液压工具，例如钻柱中的那些。所描述的流量控制装置通常并入钻柱中，并且可选择性地以流通模式或阀控制模式操作。在阀控制模式中，在钻柱内的流体压力增加或减小，以选择性地致动与流量控制装置相关联的阀。在流通模式中，可以在不操作阀的情况下增加或减少流体压力。描述了用于在流通模式和阀控制模式之间选择性地移动流量控制装置的技术。井筒流体压力读数为钻机操作员提供信号，以便以这种方式选择性地移动设备。

25. 发明授权

US5894889A One trip milling system 失效
标题翻译：一次铣削系统
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
IPC分类号： E21B7/06 , E21B7/08 , E21B29/06
CPC分类号： E21B7/061 , 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 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。

26. 发明授权

US08640792B2 Flexible directional drilling apparatus and related methods 失效
标题翻译：灵活定向钻井设备及相关方法
公开(公告)号：US08640792B2
公开(公告)日：2014-02-04
申请号：US12956889
申请日：2010-11-30
申请人： Lance D. Underwood , Charles H. Dewey
发明人： Lance D. Underwood , Charles H. Dewey
IPC分类号： E21B7/04 , E21B10/26 , E21B17/10
CPC分类号： E21B17/20 , E21B7/04
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。

27. 发明申请

US20120325480A1 DUAL STRING SECTION MILL 有权
标题翻译：双字段铣刀
公开(公告)号：US20120325480A1
公开(公告)日：2012-12-27
申请号：US13492016
申请日：2012-06-08
申请人： Ronald G. Schmidt , Charles H. Dewey
发明人： Ronald G. Schmidt , Charles H. Dewey
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。

28. 发明授权

US07861802B2 Flexible directional drilling apparatus and method 有权
标题翻译：灵活的定向钻井设备及方法
公开(公告)号：US07861802B2
公开(公告)日：2011-01-04
申请号：US11334707
申请日：2006-01-18
申请人： Lance D. Underwood , Charles H. Dewey
发明人： Lance D. Underwood , Charles H. Dewey
IPC分类号： E21B7/04 , E21B10/26
CPC分类号： E21B17/20 , E21B7/04
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。

29. 发明授权

US07207401B2 One trip milling system 有权
标题翻译：一次铣削系统
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
CPC分类号： E21B7/061 , 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。

30. 发明授权

US06648068B2 One-trip milling system 有权
标题翻译：一次铣削系统
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
CPC分类号： E21B7/061 , 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。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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