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    • 4. 发明申请
    • Coupling For Downhole Tools
    • 联轴器井下工具
    • US20100101781A1
    • 2010-04-29
    • US12256968
    • 2008-10-23
    • Eckard Scholz
    • Eckard Scholz
    • E21B31/06
    • E21B4/006E21B17/028E21B17/06
    • Transferring rotary power between a first rotating member and a second rotating member may performed by using a first element associated with the first rotating member; and a second element associated with the second rotating member. The first element and the second element may be configured to rotate the first rotating member either substantially synchronously or non-synchronously with the second rotating member. A hysteresis material may be utilized in either or both of the first element and the second element. A modulator may be used to control a speed of the first element or the second element.
    • 通过使用与第一旋转构件相关联的第一元件,可以在第一旋转构件和第二旋转构件之间传递旋转动力; 以及与第二旋转构件相关联的第二元件。 第一元件和第二元件可以被配置为使第一旋转构件与第二旋转构件基本上同步或非同步地旋转。 可以在第一元件和第二元件中的任一个或两者中使用滞后材料。 调制器可以用于控制第一元件或第二元件的速度。
    • 5. 发明授权
    • Reciprocating pulser for mud pulse telemetry
    • 用于泥浆脉冲遥测的往复式脉冲发生器
    • US07417920B2
    • 2008-08-26
    • US11136147
    • 2005-05-24
    • Detlef HahnVolker PetersCedric RouatbiEckard Scholz
    • Detlef HahnVolker PetersCedric RouatbiEckard Scholz
    • E21B47/18
    • H04L27/02E21B47/182E21B47/187H04L1/0001H04L27/0008H04L27/10H04L27/18
    • A method of transmitting pressure pulses from a downhole location through a flowing fluid in a wellbore comprises using a linear actuator to controllably move a reciprocating member axially back and forth between a first position and a second position to at least partially obstruct flow of the flowing fluid to generate the pressure pulses. A reciprocating pulser for generating pressure pulses in a fluid flowing in a wellbore, comprises a fluid passage that allows flow of the fluid through the pulser, and a reciprocating member. A linear actuator is coupled to the reciprocating member, such that the linear actuator moves the reciprocating member in a first axial direction and then in a reverse direction to at least partially obstruct flow of the fluid through the pulser to generate pressure pulses in the flowing fluid.
    • 从井下位置传送压力脉冲通过井眼中的流动流体的方法包括使用线性致动器可控制地在第一位置和第二位置之间轴向地往复运动往复运动构件,以至少部分阻碍流动流体的流动 以产生压力脉冲。 用于在井眼中流动的流体中产生压力脉冲的往复式脉冲发生器包括允许流体流过脉冲发生器的流体通道和往复运动的构件。 线性致动器联接到往复运动构件,使得线性致动器沿第一轴向方向移动往复运动构件,然后沿相反方向移动,至少部分阻碍流体通过脉冲发生器的流动,从而在流动流体中产生压力脉冲 。