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    SYSTEM AND METHOD FOR DAMPING VIBRATION IN A DRILL STRING USING A MAGNETORHEOLOGICAL DAMPER
    2.
    发明申请
    SYSTEM AND METHOD FOR DAMPING VIBRATION IN A DRILL STRING USING A MAGNETORHEOLOGICAL DAMPER 有权
    使用磁流变阻尼器阻止钻孔中振动的系统和方法

    公开(公告)号：US20120085581A1

    公开(公告)日：2012-04-12

    申请号：US13228376

    申请日：2011-09-08

    申请人： Mark Ellsworth Wassell ,  Daniel E. Burgess ,  Jason R. Barbely ,  Fred Lamar Thompson

    发明人： Mark Ellsworth Wassell ,  Daniel E. Burgess ,  Jason R. Barbely ,  Fred Lamar Thompson

    IPC分类号： E21B7/00 ,  E21B41/00

    CPC分类号： E21B17/07 ,  E21B17/073 ,  E21B44/005

    摘要： A system for damping vibration in a drill string can include a magnetorheological fluid valve assembly having a supply of a magnetorheological fluid. A remanent magnetic field is induced in the valve during operation that can be used to provide the magnetic field for operating the valve so as to eliminate the need to energize the coils except temporarily when changing the amount of damping required The current to be supplied to the coil for inducing a desired magnetic field in the valve is determined based on the limiting hysteresis curve of the valve and the history of the magnetization of the value using a binary search methodology. The history of the magnetization of the valve is expressed as a series of sets of current and it resulting magnetization at which the current experienced a reversal compared to prior values of the current.

    摘要翻译： 一种用于阻尼钻柱中的振动的系统可以包括具有磁流变流体供应的磁流变流体阀组件。 在操作期间在阀中感应到残留的磁场，其可以用于提供用于操作阀的磁场，以便在改变所需阻尼量的量时不需要临时地激励线圈。要供应到的电流 基于阀的极限滞后曲线和使用二元搜索方法的值的磁化历史来确定用于在阀中引起期望磁场的线圈。 阀的磁化历史表示为一系列电流，并且与电流的先前值相比，电流经历了反转的磁化。

    SYSTEM AND METHOD FOR DAMPING VIBRATION IN A DRILL STRING USING A MAGNETORHEOLOGICAL DAMPER
    3.
    发明申请
    SYSTEM AND METHOD FOR DAMPING VIBRATION IN A DRILL STRING USING A MAGNETORHEOLOGICAL DAMPER 有权
    使用磁流变阻尼器阻止钻孔中振动的系统和方法

    公开(公告)号：US20100224410A1

    公开(公告)日：2010-09-09

    申请号：US12398983

    申请日：2009-03-05

    申请人： Mark Ellsworth Wassell ,  Daniel E. Burgess ,  Jason R. Barbely

    发明人： Mark Ellsworth Wassell ,  Daniel E. Burgess ,  Jason R. Barbely

    IPC分类号： E21B41/00 ,  E21B7/00 ,  E21B34/06

    CPC分类号： E21B17/07 ,  E21B17/073

    摘要： A system for damping vibration in a drill string can include a magnetorheological fluid valve assembly having a supply of a magnetorheological fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define a first and a second chamber for holding the fluid. Fluid can flow between the first and second chambers in response to the movement of the second member in relation to the first member. The valve assembly can also include a coil for inducing a magnetic field that alters the resistance of the magnetorheological fluid to flow between the first and second chambers, thereby increasing the damping provided by the valve. A remanent magnetic field is induced in one or more components of the magnetorheological fluid valve during operation that can be used to provide the magnetic field for operating the valve so as to eliminate the need to energize the coils during operation except temporarily when changing the amount of damping required, thereby eliminating the need for a turbine alternator power the magnetorheological fluid valve. A demagnetization cycle can be used to reduce the remanent magnetic field when necessary.

    摘要翻译： 一种用于阻尼钻柱中的振动的系统可以包括具有磁流变流体供应的磁流变流体阀组件，第一构件和能够响应于钻头的振动相对于第一构件移动的第二构件。 第一和第二构件限定用于保持流体的第一和第二室。 响应于第二构件相对于第一构件的运动，流体可以在第一和第二室之间流动。 阀组件还可以包括用于引起磁场的线圈，其改变磁流变流体的阻力在第一和第二腔室之间流动，从而增加由阀提供的阻尼。 在操作期间，在磁流变流体阀的一个或多个部件中产生残留磁场，其可以用于提供用于操作阀的磁场，以便在操作期间不需要暂时地对线圈通电，除了当改变量 所需的阻尼，从而不需要涡轮交流发电机为磁流变流体阀供电。 当需要时，可以使用去磁循环来减小剩余磁场。

    System and method for damping vibration in a drill string using a magnetorheological damper
    4.
    发明授权
    System and method for damping vibration in a drill string using a magnetorheological damper 有权
    使用磁流变阻尼器阻止钻柱振动的系统和方法

    公开(公告)号：US08087476B2

    公开(公告)日：2012-01-03

    申请号：US12398983

    申请日：2009-03-05

    申请人： Mark Ellsworth Wassell ,  Daniel E. Burgess ,  Jason R. Barbely

    发明人： Mark Ellsworth Wassell ,  Daniel E. Burgess ,  Jason R. Barbely

    IPC分类号： E21B41/00 ,  E21B7/00 ,  E21B34/06

    CPC分类号： E21B17/07 ,  E21B17/073

    摘要： A system for damping vibration in a drill string can include a magnetorheological fluid valve assembly having a supply of a magnetorheological fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define a first and a second chamber for holding the fluid. Fluid can flow between the first and second chambers in response to the movement of the second member in relation to the first member. The valve assembly can also include a coil for inducing a magnetic field that alters the resistance of the magnetorheological fluid to flow between the first and second chambers, thereby increasing the damping provided by the valve. A remnant magnetic field is induced in one or more components of the magnetorheological fluid valve during operation that can be used to provide the magnetic field for operating the valve so as to eliminate the need to energize the coils during operation except temporarily when changing the amount of damping required, thereby eliminating the need for a turbine alternator power the magnetorheological fluid valve. A demagnetization cycle can be used to reduce the remnant magnetic field when necessary.

    摘要翻译： 一种用于阻尼钻柱中的振动的系统可以包括具有磁流变流体供应的磁流变流体阀组件，第一构件和能够响应于钻头的振动相对于第一构件移动的第二构件。 第一和第二构件限定用于保持流体的第一和第二室。 响应于第二构件相对于第一构件的运动，流体可以在第一和第二室之间流动。 阀组件还可以包括用于引起磁场的线圈，其改变磁流变流体的阻力在第一和第二腔室之间流动，从而增加由阀提供的阻尼。 在操作期间，在磁流变流体阀的一个或多个部件中产生残余磁场，其可用于提供用于操作阀的磁场，从而消除在操作期间对线圈通电的需要，除了当更改量 所需的阻尼，从而不需要涡轮交流发电机为磁流变流体阀供电。 当需要时，可以使用去磁循环来减少残余磁场。