FORMATION MEASUREMENTS USING DOWNHOLE NOISE SOURCES
    2.
    发明申请
    FORMATION MEASUREMENTS USING DOWNHOLE NOISE SOURCES 审中-公开
    使用井下噪声源的地层测量

    公开(公告)号:WO2017184340A1

    公开(公告)日:2017-10-26

    申请号:PCT/US2017/026131

    申请日:2017-04-05

    IPC分类号: E21B47/00 G01V1/46 G01V1/48

    摘要: A method of performing measurements of an earth formation includes disposing at least a first receiver and a second receiver in one or more monitoring boreholes in a formation, and injecting fluid into the formation from an injection borehole, wherein injecting includes operating a fluid control device to generate seismic and/or acoustic noise having an identifiable characteristic. The method also includes detecting seismic and/or acoustic signals at the first receiver and detecting seismic and/or acoustic signals at a second receiver, the seismic and/or acoustic signals corresponding to the seismic and/or acoustic noise, calculating an estimate of a Green's function between the first receiver and the second receiver by processing seismic and/or acoustic waves detected by the first receiver and the second receiver to at least partially reconstruct the Green's function, and estimating variations in a velocity of a region of the formation by determining variations in the reconstructed Green's function.

    摘要翻译: 执行地层测量的方法包括将至少第一接收器和第二接收器设置在地层中的一个或多个监测钻孔中,并且将流体从注入钻孔注入到地层中,其中 注入包括操作流体控制装置以产生具有可识别特性的地震和/或噪声。 该方法还包括在第一接收器处检测地震和/或声学信号并且在第二接收器处检测地震和/或声学信号,地震和/或声学信号对应于地震和/或声学噪声,计算a 通过处理由第一接收器和第二接收器检测到的地震和/或声波以至少部分地重建格林函数并通过确定格林函数的地区的速度的变化来估计第一接收器和第二接收器之间的格林函数 重建格林函数的变化。