| 基于等效偏移距的偏移成像方法 |
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| 引用本文： | 许卓,韩立国,廉玉广. 基于等效偏移距的偏移成像方法[J]. 吉林大学学报(地球科学版), 2007, 0(Z1) |
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| 作者姓名： | 许卓 韩立国 廉玉广 |
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| 作者单位： | [1]吉林大学地球探测科学与技术学院 [2]长春 |
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| 摘 要： | 等效偏移距偏移(EOM)成像方法将克希霍夫时间偏移的双平方根方程转化为一个单平方根方程,使输入采样在没有发生时移的情况下映射到以等效偏移距为变量的共散射点道集上,使散射能量按照双曲线规律分布。然后通过克希霍夫动校正和适用在共散射点道集上的叠加来完成偏移成像。基于等效偏移距叠前地震偏移(EOM)的基本理论,对CSP道集的抽取过程进行模拟实现,并对模型进行速度分析,实现偏移成像。
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| 关 键 词： | 共散射点道集 等效偏移距 Kirchhoff积分 速度分析 偏移成像 |
The Migration Imaging Method Based on Equivalent Offset |
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| XU Zhuo,HAN Li-guo,LIAN Yu-guang College of GeoExploration Science and Technology,Jilin University,Changchun ,China. The Migration Imaging Method Based on Equivalent Offset[J]. Journal of Jilin Unviersity:Earth Science Edition, 2007, 0(Z1) |
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| Authors: | XU Zhuo HAN Li-guo LIAN Yu-guang College of GeoExploration Science Technology Jilin University Changchun China |
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| Affiliation: | XU Zhuo,HAN Li-guo,LIAN Yu-guang College of GeoExploration Science and Technology,Jilin University,Changchun 130026,China |
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| Abstract: | Equivalent offset migration imageing method make the double square root equation(DSR) of the Kirchhoff time migration into a single square root equation,prestack data will map to common scatter point gathers,and moves scattered energy to hyperbolic paths on common scatter gathers.Then completed by NMO correction and stacking applied on CSP gathers.This paper introduced basic principle of equivalent offset seismic migration method.Simulate the formation common scatter point gathers,perform the stack migration. |
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| Keywords: | common scatter gathers equivalent offset Kirchhoff integral migration image |
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