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    • 1. 发明授权
    • Acoustic multi-mode wide-band logging device
    • 声学多模宽带测井仪
    • US5289433A
    • 1994-02-22
    • US960167
    • 1992-10-13
    • Christopher S. CowlesJacques P. LeveillePaul J. HatchellJesus A. MirelesRobert D. Clifton
    • Christopher S. CowlesJacques P. LeveillePaul J. HatchellJesus A. MirelesRobert D. Clifton
    • G01V1/20G01V1/52G01V1/40
    • G01V1/201G01V1/52Y10S367/911Y10S367/912
    • A multi-mode receiver sonde having individual receiver stations. The receiver stations have transducers which have a flat frequency response over a selected bandwidth so that there is an approximately constant ratio in amplitude and substantially little phase difference between the response signal and an input acoustic signal from a liquid containing borehole.The wide-band output response signals are combined to form composite signals which represent selected borehole propagation modes. Accurate comparisons can then be made between the composite signals obtained by separate receiver stations so that changes in phase and amplitude over distance and time can be determined.In one highly preferred embodiment, the receiver sonde has a semi-rigid receiver array. The semi-rigid receiver array is adapted to decouple noise (tool-mode noise and/or road-noise) in one location within the array from other locations within the array by using compliant spacers between the receiver stations to absorb and scatter the noise.
    • 具有各个接收站的多模接收机探头。 接收机站具有在所选带宽上具有平坦频率响应的换能器,使得在响应信号和来自含液体钻孔的输入声信号之间存在大致恒定的振幅比和基本上很小的相位差。 宽带输出响应信号被组合以形成表示选定的钻孔传播模式的复合信号。 然后可以在由单独的接收机站获得的复合信号之间进行准确的比较,使得可以确定在距离和时间上的相位和幅度的变化。 在一个非常优选的实施例中,接收器探头具有半刚性接收器阵列。 半刚性接收器阵列适于通过使用接收器站之间的顺序间隔来吸收和散射噪声来将阵列内的一个位置中的噪声(工具模式噪声和/或道路噪声)与阵列内的其它位置分离。
    • 3. 发明授权
    • Acoustic multi-mode logging device adapted to decouple noise within a
semi-rigid receiver array
    • 声学多模式测井装置适用于在半刚性接收器阵列内去耦合噪声
    • US5343001A
    • 1994-08-30
    • US960166
    • 1992-10-13
    • Christopher S. CowlesJacques P. LeveillePaul J. HatchellJesus A. MirelesRobert D. Clifton
    • Christopher S. CowlesJacques P. LeveillePaul J. HatchellJesus A. MirelesRobert D. Clifton
    • G01V1/52G01V1/40
    • G01V1/52
    • A multi-mode receiver sonde having individual receiver stations within a semi-rigid receiver array. The semi-rigid receiver array is adapted to decouple noise (tool-mode noise and/or road-noise) at one location within the receiver array from other locations within the receiver array by using compliant spacers between the receiver stations to absorb and scatter the noise.In preferred embodiments, multi-mode receiver stations are presented which provide a common ground for output signals detected by the receiver stations. Additional embodiments provide for combining the output signals into composite signals which represent a selected borehole propagation mode.In one highly preferred embodiment, the use of transducer detectors which have a flat frequency response over a selected bandwidth allows for accurate comparisons between composite signals so that changes in phase and amplitude over distance and time can be determined.
    • 一种多模式接收机探头,其具有半刚性接收机阵列内的各个接收机站。 半刚性接收器阵列适于通过在接收器站之间使用顺序的间隔来将接收器阵列内的一个位置处的噪声(工具模式噪声和/或道路噪声)与接收器阵列内的其他位置分离,以吸收和散射 噪声。 在优选实施例中,呈现多模接收机站,其提供由接收机站检测的输出信号的公共地。 另外的实施例提供将输出信号组合成表示选定的钻孔传播模式的复合信号。 在一个非常优选的实施例中,使用在所选带宽上具有平坦频率响应的换能器检测器允许复合信号之间的精确比较,从而可以确定在距离和时间上的相位和幅度的变化。