| 地震仿真中的快速波场重建技术 |
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| 引用本文： | 孟昭波,冯英浚,范祯祥.地震仿真中的快速波场重建技术[J].石油地球物理勘探,1989(5). |
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| 作者姓名： | 孟昭波 冯英浚 范祯祥 |
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| 作者单位： | 山东大学数学系，哈尔滨工业大学数学系，石油地球物理勘探局研究院 |
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| 基金项目： | 石油地球物理勘探局研究院资助课题 |
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| 摘 要： | 地震仿真是利用地震方法研究地下含油气地层分布的一种技术,其主要计算过程可归结为反复求解地下局部介质改变后的地震波波场。本文基于有限元和有限差分联合解法提出一种地下局部介质改变后对波场进行快速重建的方法。该方法只要对局部发生变化的波场进行重建,即可得到介质改变后的全部波场,无须每次都求解整个正问题。在这种简化的求解过程中,由于计算范围受到一定的控制,大大地减少了计算量,从而提高了计算效率。对地质模型试算的结果表明,上述方法是可靠的。
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| 关 键 词： | 地震仿真 波场重建 正演 |
Fast wave-field reconstruction technique for seismic simulation |
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| Meng Zhaobo Feng Yingjun Fan Zhenxiang.Fast wave-field reconstruction technique for seismic simulation[J].Oil Geophysical Prospecting,1989(5). |
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| Authors: | Meng Zhaobo Feng Yingjun Fan Zhenxiang |
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| Affiliation: | Meng Zhaobo Feng Yingjun Fan Zhenxiang |
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| Abstract: | Seismic simulation is a technique that researches into hydrocarbon -bearing formation distribution by using seismic data.The essential is to iteratively solve for seismic wave field in the medium whose one part has changed.A fast method for reconstructing seismic wave field in the medium whose one part has changed is advanced on the basis of combination of finite element and finite difference methods.Hence, total wave field in the medium whose one part has changed can be ob- tained by reconstructing only part wave field in stead of solving for the whole forward problem every time.In the simplified solution,the computation extent is controlled so that the computation is greatly re- duced and efficiency improved.The results of geological modeling prov- ed this method reliable. |
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| Keywords: | seismic simulation wave field reconstruction forward modeling |
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