METHOD APPARATUS AND SYSTEM FOR MIGRATION NOISE ATTENUATION AND IMAGE ENHANCEMENT
    1.
    发明申请
    METHOD APPARATUS AND SYSTEM FOR MIGRATION NOISE ATTENUATION AND IMAGE ENHANCEMENT 审中-公开
    用于移动噪声衰减和图像增强的方法装置和系统

    公开(公告)号:US20140328140A1

    公开(公告)日:2014-11-06

    申请号:US14278039

    申请日:2014-05-15

    CPC classification number: G01V1/282 G01V2210/51 G01V2210/679

    Abstract: A method for processing seismic data includes receiving seismic data and a velocity model (c(x)) for a plurality of locations (x), scaling a dimension of the seismic data according to the velocity model (c(x)) to provide a velocity normalized seismic data, and generating a final image (S(x)) of the subsurface using the velocity normalized seismic data. The velocity normalized seismic data may be a reverse-time migration image (I(x,ξ)) corresponding to the plurality of locations (x) and a plurality of propagation distance offsets (ξ). The method may also include transforming the reverse-time migration image (I(x,ξ)) for the plurality of selected positions (x) to a wavenumber domain to provide velocity normalized wavenumber data (I(k,ψ)) and suppressing data components corresponding to non-physical or undefined reflection angles to provide enhanced wavenumber data (I′(k,ψ)) and using the enhanced wavenumber data (I′(k,ψ)) to generate the final image (S(x)). A corresponding apparatus is also disclosed herein.

    Abstract translation: 一种用于处理地震数据的方法包括:对于多个位置(x)接收地震数据和速度模型(c(x)),根据速度模型(c(x))缩放地震数据的尺寸,以提供 速度归一化地震数据,并使用速度归一化地震数据生成地下的最终图像(S(x))。 速度归一化地震数据可以是对应于多个位置(x)的反向时间偏移图像(I(x,&xgr;))和多个传播距离偏移(&xgr))。 该方法还可以包括将多个选定位置(x)的反向时间偏移图像(I(x,&xgr;))变换为波数域,以提供速度归一化波数数据(I(k,ψ))并抑制 对应于非物理或未定义的反射角的数据分量以提供增强的波数数据(I'(k,ψ)),并使用增强的波数数据(I'(k,ψ))来生成最终图像(S(x) )。 本文还公开了相应的装置。

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