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基于波动方程的上下缆地震数据鬼波压制方法研究

DOI: 10.6038/cjg20151025, PP. 3746-3757

Keywords: 海上地震采集,上下缆,鬼波压制,波动方程延拓合并,频率波数域

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Abstract:

本文发展基于波动方程的上下缆鬼波压制方法,推导了上下缆地震波场频率波数域波动方程延拓合并公式.基于Fourier变换的波场解析延拓确保上下缆资料振幅相位的一致性,消除了长拖缆远偏移距信号的计算误差,同时具有较高的计算效率;上下缆地震波场的波动方程法合并有效解偶鬼波干涉,实现综合利用上下缆地震数据压制鬼波.理论模型数据和实际采集地震数据的测试表明了方法的有效性.

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