| 基于多参数速度模型的转换波叠前时间偏移技术 |
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| 引用本文： | 毕丽飞.基于多参数速度模型的转换波叠前时间偏移技术[J].石油地球物理勘探,2010,45(3):342. |
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| 作者姓名： | 毕丽飞 |
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| 作者单位： | 中国地质大学(武汉);中国石化胜利油田物探院; |
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| 基金项目： | 国家863项目“油藏综合地球物理技术”分课题“纵、横波(转换波)油气预测识别技术”(编号2007AA06050)部分研究成果 |
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| 摘 要： | 转换波成像困难的关键在于转换波的共转换点位置难以求准。本文在抽取渐近转换点（ACP）的基础上，采用基于多参数速度模型的Kirchhoff偏移算法实现叠前偏移成像，避开抽取共转换点难的问题，可以从常规速度分析方法中求取与转换波有关的速度参数。该方法很好地解决了转换波不对称性射线路径及强各向异性等带来的不利影响，实现了实际地震道转换波的不同反射层段在空间上的归位。
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| 关 键 词： | 转换波 渐近转换点 多参数速度模型 叠前时间偏移 |
The converted wave pre-stack time migration technique based on multiparameter velocity model |
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| Bi Li-fei,..China University of Geosciences ,Wuhan City,Hubei Province,China.Geophysical Research Institute of Shengli Oil-field,Sinopec,Dongying City,Sh,ong Province,China.The converted wave pre-stack time migration technique based on multiparameter velocity model[J].Oil Geophysical Prospecting,2010,45(3):342. |
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| Authors: | Bi Li-fei China University of Geosciences Wuhan City Hubei Province ChinaGeophysical Research Institute of Shengli Oil-field Sinopec Dongying City Sh ong Province China |
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| Affiliation: | Bi Li-fei1,2.1.China University of Geosciences (Wuhan),Wuhan City,Hubei Province,430074,China2.Geophysical Research Institute of Shengli Oil-field,Sinopec,Dongying City,Shandong Province,257001,China |
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| Abstract: | The difficulty in precisely estimating location of the common transform point for converted wave results in difficulty for the converted wave imaging.Based on the extraction of the progressive conversion point,the Kirchhoff migration algrithm based on the multiparameter velocity model was conducted to realize pre-stack time migration,by avoiding difficulty in extraction of common transform point,the velocity parameters which are related to converted wave can be extracted from conventional velocity analysis ... |
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| Keywords: | converted wave progressive conversion point multiparameter velocity model pre-stack time migration |
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