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多次波干扰是地震勘探中最重要的问题之一,其衰减技术也是地震数据处理的难题之一。本文主要介绍了多次波的形成、分类及其特征,并在Pro Max系统上对合成地震记录的多次波进行了压制:首先采用合适的速度对时-空域的地震记录进行NMO校正;然后,分别用F-K变换和Radon变换方法将其变换到F-K域和Radon域,对多次波所占据的主要区域进行充零衰减;最后,通过对应的反变换将其变换到时-空域,从而达到多次波衰减的目的。通过在Pro Max系统中的应用表明:不同方法对多次波的衰减效果各有优劣,组合滤波方法能达到更好的效果。
Multi-wave interference is one of the most important problems in seismic exploration, and its attenuation technology is also one of the problems in seismic data processing. In this paper, we mainly introduce the formation, classification and characteristics of multiple waves, and suppress the multiples of synthetic seismograms on the Pro Max system. Firstly, the NMO correction is performed on the seismic records in the time-space domain at appropriate velocities. Then , Transform them into FK domain and Radon domain with FK transform and Radon transform method, respectively, fill the main region occupied by multiple waves with zero attenuation; Finally, transform it into time-space domain by corresponding inverse transform, so as to achieve The purpose of multiple attenuation. The application in Pro Max system shows that different methods have their own advantages and disadvantages of multiple attenuation, and combined filtering can achieve better results.