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    • 22. 发明申请
    • Downlink Pulser for Mud Pulse Telemetry
    • 用于泥浆脉冲遥测的下行脉冲发生器
    • US20080055110A1
    • 2008-03-06
    • US11831707
    • 2007-07-31
    • Detlef HahnVolker PetersCedric RouatbiHeiko Eggers
    • Detlef HahnVolker PetersCedric RouatbiHeiko Eggers
    • G01V3/00
    • E21B47/182E21B47/18G01V11/002
    • A mud pulse telemetry system comprises a surface located fluid supply line having a drilling fluid flowing therein. A non-venting pulser is disposed in the drilling fluid in the supply line, and the non-venting pulser is adapted to generate pressure fluctuations in the flowing drilling fluid. A downhole receiver in hydraulic communication with the non-venting pulser is adapted to detect the pressure fluctuations in the drilling fluid. A method for transmitting pressure signals from a surface location to a downhole location in a wellbore, comprises disposing a non-venting pulser in a surface located fluid supply line having a drilling fluid flowing therein. The non-venting pulser is actuated to generate pressure fluctuations in the flowing drilling fluid according to a predetermined encoding scheme. The pressure fluctuations are detected with a downhole receiver in hydraulic communication with the non-venting pulser.
    • 泥浆脉冲遥测系统包括具有在其中流动的钻井流体的表面定位的流体供应管线。 非排气脉动器设置在供应管线中的钻井流体中,并且非排气脉动器适于在流动的钻井流体中产生压力波动。 与非排气脉动器液压连通的井下接收器适于检测钻井液中的压力波动。 一种用于将压力信号从井表面位置传送到井眼中的井下位置的方法,包括将非排气脉动器设置在具有在其中流动的钻井流体的位于流体供应管线的表面中。 根据预定的编码方案,启动非排气脉动器以在流动的钻井液中产生压力波动。 在与非排气脉动器液压连通的井下接收器中检测压力波动。
    • 23. 发明授权
    • Oscillating shear valve for mud pulse telemetry and associated methods of use
    • 用于泥浆脉冲遥测的摆动剪切阀及相关使用方法
    • US06975244B2
    • 2005-12-13
    • US10223169
    • 2002-08-19
    • Detlef HahnVolker PetersCedric RouatbiHeiko Eggers
    • Detlef HahnVolker PetersCedric RouatbiHeiko Eggers
    • H04H60/31E21B7/08E21B47/18G01V11/00G01V3/00G01V3/34
    • E21B47/182E21B47/18G01V11/002
    • An oscillating shear valve system for generating pressure fluctuations in a flowing drilling fluid comprising a stationary stator and an oscillating rotor, both with axial flow passages. The rotor oscillates in close proximity to the stator, at least partially blocking the flow through the stator and generating oscillating pressure pulses. The rotor passes through two zero speed positions during each cycle, facilitating rapid changes in signal phase, frequency, and/or amplitude facilitating enhanced, multivalent data encoding. The rotor is driven by a motorized gear drive. In one embodiment, a torsional spring is attached to the motor and the resulting spring mass system is designed to be near resonance at the desired pulse frequency. The system enables the use of multivalent encoding schemes for increasing data rates.
    • 一种用于在流动的钻井流体中产生压力波动的摆动剪切阀系统,其包括具有轴向流动通道的固定定子和振荡转子。 转子在定子附近振动,至少部分地阻塞通过定子的流动并产生振荡压力脉冲。 转子在每个循环期间通过两个零速度位置,促进信号相位,频率和/或振幅的快速变化,促进增强的多值数据编码。 转子由电动齿轮传动驱动。 在一个实施例中,扭转弹簧连接到电动机,并且所得到的弹簧质量系统被设计为在期望的脉冲频率处接近谐振。 该系统能够使用多值编码方案来提高数据速率。
    • 24. 发明授权
    • Hydraulically balanced reciprocating pulser valve for mud pulse telemetry
    • 液压平衡式往复式脉动阀用于泥浆脉冲遥测
    • US06898150B2
    • 2005-05-24
    • US10096451
    • 2002-03-12
    • Detlef HahnVolker PetersCedric Rouatbi
    • Detlef HahnVolker PetersCedric Rouatbi
    • E21B47/18H04L1/00H04L27/00H04H9/00
    • E21B47/182E21B47/18H04L1/0001H04L27/0008Y10T137/5109
    • A reciprocating pulser system for generating pressure fluctuations in a flowing drilling fluid comprising a reciprocating poppet and a stationary valve assembly with axial flow passages. The poppet reciprocates in close proximity to the valve assembly, at least partially blocking the flow through the valve assembly and generating oscillating pressure pulses. The poppet passes through two zero speed positions during each cycle, enabling rapid changes in signal phase, frequency, and/or amplitude thereby facilitating enhanced data encoding. The poppet is driven by a linear electric motor disposed in a lubricant filled housing. In one embodiment, the housing to shaft seal is a flexible bellows. In one embodiment, a force balance spring is used to essentially offset the hydraulic flow forces on the poppet. In one embodiment, a bypass poppet is used to adjust the differential pressure across the valve assembly.
    • 一种用于在流动的钻井流体中产生压力波动的往复式脉动器系统,包括往复式提升阀和具有轴向流动通道的固定阀组件。 提升阀在阀组件附近往复运动,至少部分地阻止通过阀组件的流动并产生振荡压力脉冲。 提升阀在每个循环期间通过两个零速度位置,使信号相位,频率和/或振幅能够快速改变,从而便于增强的数据编码。 提升阀由设置在润滑剂填充的壳体中的线性电动机驱动。 在一个实施例中,轴套密封件是柔性波纹管。 在一个实施例中,力平衡弹簧用于基本上抵消在提升阀上的液压流动力。 在一个实施例中,旁路提升阀用于调节跨越阀组件的差压。
    • 25. 发明授权
    • Method and apparatus for drilling boreholes in earth formations (drilling liner systems)
    • 地层钻孔钻孔方法及装置(钻井系统)
    • US06196336B1
    • 2001-03-06
    • US09205969
    • 1998-12-04
    • Roger FincherLarry WatkinsFriedhelm MakohlDetlef Hahn
    • Roger FincherLarry WatkinsFriedhelm MakohlDetlef Hahn
    • E21B720
    • E21B7/065E21B4/18E21B7/068E21B7/208E21B43/10
    • A drilling liner having a core bit at its bottom end is carried along with a pilot bit on an inner bottom hole assembly driven by a downhole mud motor. In one embodiment, the motor is powered by mud carried by an inner string. Alternatively, the inner string may be omitted and the flow of mud through the liner powers the motor: this requires a locking tool for locking the motor assembly to the outer assembly. Once an abnormally (high or low) pressured zone has been traversed, the liner is set as a casing, the inner assembly is pulled out, and drilling may be resumed using a conventional tool. Directional drilling is accomplished by having an MWD device for providing directional information and having directional devices on the inner and outer assembly. These include retractable steering pads. Expandable bits, under-reamers and jetting nozzles may also be used in the drilling process. One embodiment of the invention has a bottom thruster between the mud motor and the drill bits that makes it possible to continue drilling for a limited distance even if the upper portion of the casing is stuck.
    • 在其底端具有芯钻头的钻井衬套与由井下泥浆马达驱动的内底孔组件上的导向钻头一起运送。 在一个实施例中,马达由内部绳子承载的泥浆供电。 或者,可以省略内部串,并且通过衬套的泥浆的流动为电动机供电:这需要用于将电动机组件锁定到外部组件的锁定工具。 一旦异常(高压或低压)的压力区域被穿过,衬套被设置为外壳,内部组件被拉出,并且可以使用常规工具恢复钻孔。 定向钻孔是通过具有用于提供方向信息并在内部和外部组件上具有定向装置的MWD装置来实现的。 这些包括可伸缩转向垫。 在钻井过程中也可以使用可扩展钻头,扩孔钻机和喷射喷嘴。 本发明的一个实施例在泥浆马达和钻头之间具有底部推进器,使得即使套管的上部被卡住,也可以继续钻孔有限的距离。
    • 29. 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 。
    • 30. 发明授权
    • Oscillating shear valve for mud pulse telemetry
    • 用于泥浆脉冲遥测的摆动剪切阀
    • US07280432B2
    • 2007-10-09
    • US11270243
    • 2005-11-09
    • Detlef HahnVolker PetersCedric RouatbiHeiko Eggers
    • Detlef HahnVolker PetersCedric RouatbiHeiko Eggers
    • H04H9/00
    • E21B47/182E21B47/18G01V11/002
    • An oscillating shear valve system for generating pressure fluctuations in a flowing drilling fluid comprising a stationary stator and an oscillating rotor, both with axial flow passages. The rotor oscillates in close proximity to the stator, at least partially blocking the flow through the stator and generating oscillating pressure pulses. The rotor passes through two zero speed positions during each cycle, facilitating rapid changes in signal phase, frequency, and/or amplitude facilitating enhanced, multivalent data encoding. The rotor is driven by a motorized gear drive. In one embodiment, a torsional spring is attached to the motor and the resulting spring mass system is designed to be near resonance at the desired pulse frequency. The system enables the use of multivalent encoding schemes for increasing data rates.
    • 一种用于在流动的钻井流体中产生压力波动的摆动剪切阀系统,其包括具有轴向流动通道的固定定子和振荡转子。 转子在定子附近振动,至少部分地阻塞通过定子的流动并产生振荡压力脉冲。 转子在每个循环中通过两个零速度位置,促进信号相位,频率和/或振幅的快速变化,促进增强的多值数据编码。 转子由电动齿轮传动驱动。 在一个实施例中,扭转弹簧连接到电动机,并且所得到的弹簧质量系统被设计为在期望的脉冲频率处接近谐振。 该系统能够使用多值编码方案来提高数据速率。