叠前去噪方法及其应用

Prestack Noise Suppression Methods and Their Application

规则干扰和不规则干扰影响地震数据处理的最终成果，也影响叠前处理方法的应用效果。针对干扰波的特点，介绍了不同的压制噪声的方法，用速度滤波、小波变换对线性干扰进行压制，τ-ρ变换衰减多次波，多道统计方法和中值滤波消除野值脉冲干扰．此外，如零相位谱均衡反褶积SPEQ、DMO处理等对随机噪声具有一定的压制作用。根据这些方法的优缺点，在实际的地震资料处理中，对不同噪声采用合适的压制方法，实际资料处理成果表明达到了预期效果．

Regular and irregular interferences can influence scismic processing results and the application effects of prestack processing methods. In view of the characteristics of interference waves, this paper introduces varies noise suppression methods including velocity filtering and wavelet transform for linear interference suppression, T-P transform for multiple wave attenuation, and multichannel statistics and median filtering for tear pulse interference elimination. In addition, zero -phase spectrum equalizing deconvolution, SPEQ and DMO can suppress random noise. Different suppression methods are used to suppress different type of noise. Real data processing results are of high quality.