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利用VSP资料所包含的高频信息,可以提高三维地面地震资料的分辨率。本文提出一种新的子波置换法——将地面地震记录中的子波,置换为零偏VSP的子波,在资料处理中通过子波置换反褶积实现。理论子波与倾斜地层模型实验证明了子波置换反褶积方法的效能。实际地震资料的处理效果表明,该方法可以有效地提高地震反射波的主频和高截频,同时较好地保护信号的低频成分,从而拓宽地面地震信号的频带宽度,提高地面地震资料的分辨率。
Using the high-frequency information contained in the VSP data, the resolution of 3D terrestrial seismic data can be increased. In this paper, a new wavelet replacement method is proposed - replacing the wavelet in the ground seismogram with the wavelet of the zero-offset VSP and implementing wavelet transform deconvolution in data processing. Experiments on theoretical wavelets and inclined stratum models demonstrate the effectiveness of the wavelet deconvolution method. The actual seismic data processing results show that this method can effectively improve the seismic frequency of the main frequency and high cut-off, while better protection of the low-frequency components of the signal, thereby broadening the bandwidth of the ground seismic signal to improve the resolution of terrestrial seismic data rate.