【摘要】 阜阳地区二维地震数据干扰类型主要为相干噪音,对目的层成像造成严重影响,现有常规去噪技术无法取得良好的去噪效果。为此,从共炮点道集、共检波点道集及共偏移距道集等几何空间上对相干噪音的特征进行了分析,应用共检波点道集数据,通过有效波速度动校进行波场变换,在频率空间域实现信号和噪音的分离,噪音去除后处理数据反动校回原波场,有效克服了常规去噪方法去噪后混波严重及蚯蚓化等现象。该方法在阜阳地区二维地震资料处理中取得了良好的应用效果,成果剖面质量明显改善。更多还原

【Abstract】 The coherent noise,which is a main interference type in 2D seismic data in Fuyang area,seriously influences the imaging effect of target layers.Conventional methods to remove or attenuate this type noise can not achieve the expected effect.Therefore,analyzing the characteristics of coherent noise from geometric space such as common-source-gather,common-receiver-gather and common-offset-gather,an attenuation noise process is applied in common-receiver-gather.The method steps are as follows:(1) to make the difference of signal and noise larger by moveout-signal velocity;(2) to separate and subtract the noise from the data in f-x domain;(3) to moveout the data to normal wavefield.The method effectively overcomes the shortcoming of the conventional method and has good results in the 2-D seismic data processing of Fuyang area.更多还原