| 波动方程混合法真振幅偏移 |
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| 引用本文： | 刘东奇,崔兴福,张关泉.波动方程混合法真振幅偏移[J].石油地球物理勘探,2004,39(3):283-286. |
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| 作者姓名： | 刘东奇 崔兴福 张关泉 |
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| 作者单位： | [1]中国石油勘探开发研究院地球物理所 [2]中国石油辽河油田分公司勘探开发研究院计算所 [3]中国科学院数学与系统科学研究院计算数学与科学工程计算研究所 |
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| 摘 要： | 本文从三维不均匀介质中的波动方程外推算子分解出发，得到了用于真振幅偏移的单程波方程；再经过一系列数学变换，推导出裂步傅里叶法真振幅偏移和傅里叶有限差分法真振幅偏移的波场外推方程。文中还给出了其具体的实现过程，并采用Marmousi模型的数值计算结果进行验证，表明此方法在总体上与相应的常规偏移结果相当，在某些局部处理效果有较大改善。
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| 关 键 词： | 波动方程 三维不均匀介质 振幅 地震波 反射面 偏移成像处理技术 |
True-amplitude migration of wave-equation hybrid method. |
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| Liu Dong-qi Geophysical Institute of CNPC Exploration and Development Institute,Beijing City,China,Cui Xing-fu and Zhang Guan-quan.True-amplitude migration of wave-equation hybrid method.[J].Oil Geophysical Prospecting,2004,39(3):283-286. |
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| Authors: | Liu Dong-qi Geophysical Institute of CNPC Exploration and Development Institute Beijing City China Cui Xing-fu and Zhang Guan-quan |
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| Affiliation: | Liu Dong-qi Geophysical Institute of CNPC Exploration and Development Institute,Beijing City,124010,China,Cui Xing-fu and Zhang Guan-quan |
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| Abstract: | Starting from the decomposition of wave equ- ation extrapolation operator in 3-D non-uniform medium,the paper gained one-way wave-equation used for true amplitude migration;after a series of mathematical transformation,the paper deduced the wave fields extrapolation equations used for split-step Fourier true amplitude migration and Fourier finite-difference true amplitude migration.The paper also gave the concrete realizing process and used the numerical computed result of Marmousi model to verify the method,which showed that the method generally corresponds to common migration results but has great improvement in processed effects of some local parts. |
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| Keywords: | wave equation true amplitude migration operator split-step Fourier migration Fourier finite-difference migration hybrid method |
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