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    • 91. 发明公开
    • Acoustic borehole imaging tool
    • Akustisches Bohrlochbilderzeugungswerkzeug
    • EP2784550A2
    • 2014-10-01
    • EP14157212.3
    • 2014-02-28
    • Weatherford/Lamb, Inc.
    • Medhat, Mickael
    • G01V1/28G01V1/30G01V1/40
    • G01V1/48G01V1/284G01V1/303G01V1/40G01V1/44G01V1/50G01V2210/6222G01V2210/74
    • A logging system for producing borehole images of acoustic properties of formations penetrated by the borehole. Images of formation compressional wave and shear wave velocities are generated in real time. The system can be a LWD system with a source section that comprises a unipole, dipole, quadrupole or other acoustic source. The receiver section comprises multiple receiver stations disposed at different axial spacings from the acoustic source. The system requires that the source and receiver sections rotate synchronously as the logging tool its conveyed along the borehole. Receiver responses are measured in a plurality of azimuthal angle segments and processed as a fonction of rotation angle of the tool. Acoustic parameters of interest are obtained from the azimuthal receiver responses at annotated depths along the borehole and used to produce borehole images of the parameters of interest.
    • 用于生成钻孔穿透的地层声学性质的井眼图像的测井系统。 实时生成压缩波和剪切波速度的图像。 该系统可以是具有源极部分的LWD系统,其包括单极,偶极子,四极或其它声源。 接收器部分包括设置在与声源不同轴向间隔的多个接收器站。 该系统要求源和接收器部分沿着钻孔传送的测井工具同步旋转。 接收器响应在多个方位角段中测量,并被作为工具的旋转角度的角度进行处理。 感兴趣的声学参数是从沿着井眼的注释深度处的方位角接收器响应获得的,并用于产生感兴趣的参数的井眼图像。