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    Apparatus for measuring bending on a drill bit operating in a well
    1.
    发明授权
    Apparatus for measuring bending on a drill bit operating in a well 有权

    公开(公告)号：US09279903B2

    公开(公告)日：2016-03-08

    申请号：US13776705

    申请日：2013-02-26

    申请人： Mark Ellsworth Wassell ,  Martin E. Cobern ,  Carl Allison Perry

    发明人： Mark Ellsworth Wassell ,  Martin E. Cobern ,  Carl Allison Perry

    IPC分类号： E21B47/00 ,  G01V11/00

    CPC分类号： G01V11/002 ,  E21B47/0006

    摘要： An apparatus for measuring the bending on a drill bit operating down hole in a well may comprise at least three pockets circumferentially spaced equidistantly around the drill collar of the drill string to which the drill bit is attached. Four strain gauges are equidistantly circumferentially spaced around each of the pockets so as to form first and second sets of strain gauges. The strain gauges in the first set are connected into one Wheatstone bridge while the gauges in the second set are connected in a second bridge. Each of the strain gauges that are oriented similarly within each of the pockets are connected in series within a single leg of a bridge so that the output voltage of the bridge is unaffected by bending in the drill string. The output of first bridge is used to determine the bending on the drill bit. Further, an apparatus for measuring the bending, weight, and torque on a drill bit operating down hole in a well may comprise at least three pockets circumferentially spaced equidistantly around the drill collar of the drill string to which the drill bit is attached with twelve strain gauges that are equidistantly circumferentially spaced around each of the pockets so as to form first and second sets of strain gauges. The arrangement of the twelve strain gauges allow for a bending on bit measurement that cancels out the affects of the weight on bit and torque on bit.

    Apparatus and method for damping vibration in a drill string
    2.
    发明授权
    Apparatus and method for damping vibration in a drill string 有权
    用于阻止钻柱中的振动的装置和方法

    公开(公告)号：US09458679B2

    公开(公告)日：2016-10-04

    申请号：US13041863

    申请日：2011-03-07

    申请人： William Evans Turner ,  Mark Hutchinson ,  Dirk Bosman ,  Mark Ellsworth Wassell ,  Carl Allison Perry ,  Martin E. Cobern

    发明人： William Evans Turner ,  Mark Hutchinson ,  Dirk Bosman ,  Mark Ellsworth Wassell ,  Carl Allison Perry ,  Martin E. Cobern

    IPC分类号： E21B17/07 ,  E21B44/00 ,  E21B17/10

    CPC分类号： E21B17/07 ,  E21B17/10 ,  E21B44/00

    摘要： An apparatus and method for damping vibration, especially torsional vibration due to stick-slip, in a drill string, Sensors measure the instantaneous angular velocity of the drill string at one or more locations along the length of the drill string. One or more vibration damping modules are also spaced along the length of the drill string. When torsional vibration above a threshold is detected, the damping module imposes a reverse torque on the drill that dampens the torsional vibration. The reverse torque can be created by imparting a frictional resistance to the rotation of the drill string. The frictional resistance can be created externally, by extending friction pads from the damping module so that they contact the bore hole wall and drag along the bore hole as the drill string rotates, or internally by anchoring a housing mounted on the drill string to the wall of the bore hole and then imposing frictional resistance on a fluid, such as a magnetorheological fluid, flowing within the drill string.

    摘要翻译： 传感器测量在钻柱长度的一个或多个位置处的钻柱的瞬时角速度的装置和方法，其特征在于，用于在钻柱中阻尼振动，特别是由于滑动导致的扭转振动。 一个或多个减震模块也沿着钻柱的长度间隔开。 当检测到超过阈值的扭转振动时，阻尼模块在钻头上施加扭转扭转扭矩的扭矩。 可以通过对钻柱的旋转施加摩擦阻力来产生反向扭矩。 摩擦阻力可以通过从阻尼模块延伸摩擦垫从外部产生，使得它们与钻孔壁接触并随着钻柱旋转而沿钻孔拖动，或者通过将安装在钻柱上的壳体锚固在壁上 然后对在钻柱内流动的流体（例如磁流变流体）施加摩擦阻力。

    APPARATUS FOR MEASURING BENDING ON A DRILL BIT OPERATING IN A WELL
    3.
    发明申请
    APPARATUS FOR MEASURING BENDING ON A DRILL BIT OPERATING IN A WELL 有权
    用于测量钻孔钻头操作的设备

    公开(公告)号：US20110024188A1

    公开(公告)日：2011-02-03

    申请号：US12512740

    申请日：2009-07-30

    申请人： Mark Ellsworth Wassell ,  Martin E. Cobern ,  Carl Allison Perry

    发明人： Mark Ellsworth Wassell ,  Martin E. Cobern ,  Carl Allison Perry

    IPC分类号： E21B47/01 ,  E21B47/00

    CPC分类号： G01V11/002 ,  E21B47/0006

    摘要： An apparatus for measuring the bending on a drill bit operating down hole in a well may comprise at least three pockets circumferentially spaced equidistantly around the drill collar of the drill string to which the drill bit is attached. Four strain gauges are equidistantly circumferentially spaced around each of the pockets so as to form first and second sets of strain gauges. The strain gauges in the first set are connected into one Wheatstone bridge while the gauges in the second set are connected in a second bridge. Each of the strain gauges that are oriented similarly within each of the pockets are connected in series within a single leg of a bridge so that the output voltage of the bridge is unaffected by bending in the drill string. The output of first bridge is used to determine the bending on the drill bit. Further, an apparatus for measuring the bending, weight, and torque on a drill bit operating down hole in a well may comprise at least three pockets circumferentially spaced equidistantly around the drill collar of the drill string to which the drill bit is attached with twelve strain gauges that are equidistantly circumferentially spaced around each of the pockets so as to form first and second sets of strain gauges. The arrangement of the twelve strain gauges allow for a bending on bit measurement that cancels out the affects of the weight on bit and torque on bit.

    摘要翻译： 用于测量在井中钻孔的钻头上的弯曲的装置可以包括围绕钻头钻头附接的钻柱的钻铤周向间隔开的至少三个凹坑。 四个应变计围绕每个凹穴等距地周向间隔开，以便形成第一组和第二组应变计。 第一组中的应变计连接到一个惠斯通电桥中，而第二组中的测量仪连接在第二桥中。 在每个凹穴内相似地定向的每个应变计在桥的单个支腿内串联连接，使得桥的输出电压不受钻柱中的弯曲的影响。 第一桥的输出用于确定钻头上的弯曲。 此外，用于测量井中钻头钻孔的弯曲，重量和扭矩的装置可以包括至少三个围绕钻柱的钻铤圆周间隔地间隔开的钻孔，其中钻头附接有十二个应变 围绕每个凹穴等距地周向间隔开的量规，以便形成第一组和第二组应变计。 十二个应变计的布置允许在位测量上进行弯曲，从而消除位上的重量和位上的扭矩的影响。

    Apparatus for measuring bending on a drill bit operating in a well
    4.
    发明授权
    Apparatus for measuring bending on a drill bit operating in a well 有权
    用于测量在井中操作的钻头上的弯曲的装置

    公开(公告)号：US08397562B2

    公开(公告)日：2013-03-19

    申请号：US12512740

    申请日：2009-07-30

    申请人： Mark Ellsworth Wassell ,  Martin E. Cobern ,  Carl Allison Perry

    发明人： Mark Ellsworth Wassell ,  Martin E. Cobern ,  Carl Allison Perry

    IPC分类号： E21B44/00

    CPC分类号： G01V11/002 ,  E21B47/0006

    摘要： An apparatus for measuring the bending on a drill bit operating down hole in a well may comprise at least three pockets circumferentially spaced equidistantly around the drill collar of the drill string to which the drill bit is attached. Four strain gauges are equidistantly circumferentially spaced around each of the pockets so as to form first and second sets of strain gauges. The strain gauges in the first set are connected into one Wheatstone bridge while the gauges in the second set are connected in a second bridge. Each of the strain gauges that are oriented similarly within each of the pockets are connected in series within a single leg of a bridge so that the output voltage of the bridge is unaffected by bending in the drill string. The output of first bridge is used to determine the bending on the drill bit. Further, an apparatus for measuring the bending, weight, and torque on a drill bit operating down hole in a well may comprise at least three pockets circumferentially spaced equidistantly around the drill collar of the drill string to which the drill bit is attached with twelve strain gauges that are equidistantly circumferentially spaced around each of the pockets so as to form first and second sets of strain gauges. The arrangement of the twelve strain gauges allow for a bending on bit measurement that cancels out the affects of the weight on bit and torque on bit.

    摘要翻译： 用于测量在井中钻孔的钻头上的弯曲的装置可以包括围绕钻头钻头附接的钻柱的钻铤周向间隔开的至少三个凹坑。 四个应变计围绕每个凹穴等距地周向间隔开，以便形成第一组和第二组应变计。 第一组中的应变计连接到一个惠斯通电桥中，而第二组中的测量仪连接在第二桥中。 在每个凹穴内相似地定向的每个应变计在桥的单个支腿内串联连接，使得桥的输出电压不受钻柱中的弯曲的影响。 第一桥的输出用于确定钻头上的弯曲。 此外，用于测量井中钻头钻孔的弯曲，重量和扭矩的装置可以包括至少三个围绕钻柱的钻铤圆周间隔地间隔开的钻孔，其中钻头附接有十二个应变 围绕每个凹穴等距地周向间隔开的量规，以便形成第一组和第二组应变计。 十二个应变计的布置允许在位测量上进行弯曲，从而消除位上的重量和位上的扭矩的影响。

    Method for deploying extendable arm for formation evaluation MWD tool
    6.
    发明授权
    Method for deploying extendable arm for formation evaluation MWD tool 失效
    部署可扩展臂用于地层评估MWD工具的方法

    公开(公告)号：US5242020A

    公开(公告)日：1993-09-07

    申请号：US628690

    申请日：1990-12-17

    申请人： Martin E. Cobern

    发明人： Martin E. Cobern

    IPC分类号： E21B17/10 ,  E21B23/01 ,  E21B23/04 ,  E21B44/00 ,  E21B47/01

    CPC分类号： E21B47/01 ,  E21B17/1021 ,  E21B23/01 ,  E21B23/04 ,  E21B44/00

    摘要： An extending arm is incorporated into a formation evaluation MWD collar or sub for extending outwardly from the tool and maintaining direct and continuous contact with the borehole wall (e.g., formation). In accordance with this invention, a method is presented for intermittently deploying the extendable arm and thereby decreasing drilling interference (caused by the arm) and avoiding the damage caused by accidents involving a nuclear source.

    摘要翻译： 延伸臂被结合到地层评估MWD轴环或子架中，用于从工具向外延伸并保持与钻孔壁的直接和连续接触（例如，地层）。 根据本发明，提出了一种用于间歇地展开可伸缩臂的方法，从而减少钻孔干扰（由臂引起）并避免由涉及核源的事故引起的损坏。

    Methods and systems for determining angular orientation of a drill string
    8.
    发明授权
    Methods and systems for determining angular orientation of a drill string 有权
    用于确定钻柱角度定向的方法和系统

    公开(公告)号：US07681663B2

    公开(公告)日：2010-03-23

    申请号：US11416009

    申请日：2006-05-01

    申请人： Martin E. Cobern

    发明人： Martin E. Cobern

    IPC分类号： E21B7/04 ,  E21B47/024

    CPC分类号： E21B47/024

    摘要： Preferred methods and systems generate a control input based on a periodically-varying characteristic associated with the rotation of a drill string. The periodically varying characteristic can be correlated with the magnetic tool face and gravity tool face of a rotating component of the drill string, so that the control input can be used to initiate a response in the rotating component as a function of gravity tool face.

    摘要翻译： 优选的方法和系统基于与钻柱的旋转相关联的周期性变化的特性来生成控制输入。 周期性变化的特性可以与钻柱的旋转部件的磁性工具面和重力工具面相关联，使得控制输入可以用于作为重力工具面的函数在旋转部件中启动响应。

    Means for varying MWD tool operating modes from the surface
    10.
    发明授权
    Means for varying MWD tool operating modes from the surface 失效
    用于从表面改变MWD工具操作模式的手段

    公开(公告)号：US5034929A

    公开(公告)日：1991-07-23

    申请号：US389321

    申请日：1989-08-02

    申请人： Martin E. Cobern ,  Walter A. Helm

    发明人： Martin E. Cobern ,  Walter A. Helm

    IPC分类号： E21B41/00 ,  E21B47/18

    CPC分类号： E21B41/00 ,  E21B47/18 ,  F05B2220/50

    摘要： A method and apparatus for establishing a remote communications link from the rig floor to the downhole MWD system is presented. In accordance with the present invention, the state of a physical condition downhole is changed in a predetermined timed sequence. This state change is controlled on the surface at the drilling platform and detected downhole by the MWD system. The desired operating mode of the MWD system is then determined based on the detected time sequence of the state changes. Preferred embodiments of the present invention utilize two different state changes which are detectable downhole and which can be controlled at the surface. In a first embodiment, the state changes comprise a preselected timed sequence of powering the MWD system up or down. This power cycling is accomplished by operating the mud pump in an ON/OFF sequence which will cause the MWD turbine to similarly be powered up or down. In a second embodiment of the present invention, the state changes are accomplished by modulating the mud flow in a timed sequence which will result in modulations to the MWD turbine. Preselected modulations in the turbine will result in a pattern of power modulations in the MWD systems which will trigger a different operating mode.

    摘要翻译： 提出了一种用于建立从钻井平台到井下MWD系统的远程通信链路的方法和装置。 根据本发明，井下物理条件的状态以预定的时序顺序改变。 这种状态变化在钻井平台的表面被控制，并由MWD系统检测到井下。 然后根据检测到的状态变化的时间顺序来确定MWD系统的期望操作模式。 本发明的优选实施例利用井下可检测的两种不同的状态变化，并且可以在表面处被控制。 在第一实施例中，状态改变包括向上或向下供电MWD系统的预选定时序列。 这种动力循环是通过以打开/关闭顺序操作泥浆泵来实现的，这将使得MWD涡轮机类似地被加电或关闭。 在本发明的第二实施例中，状态变化是通过以定时顺序调制泥浆流来实现的，这将导致MWD涡轮机的调节。 涡轮机中的预选调制将导致MWD系统中的功率调制模式，这将触发不同的运行模式。