| 共反射面道集偏移速度建模 |
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| 引用本文： | 李振春,姚云霞,马在田,王华忠.共反射面道集偏移速度建模[J].地震学报,2003,25(4):406-414. |
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| 作者姓名： | 李振春 姚云霞 马在田 王华忠 |
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| 作者单位： | 1) 中国山东东营257061石油大学地球资源与信息学院
2) 中国上海200092同济大学海洋地质与地球物理学院 |
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| 基金项目： | 国家自然科学基金( 4 9894 190 0 2 4 )，大庆油田有限公司资助 |
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| 摘 要： | 共反射面（CRS）叠加是一种与宏观速度模型无关，仅依赖于近地表速度的地震成像方法．其通过地震三参数的优化实现地震成像．本文推导了基于CRS叠加得出的优化三参数与偏移速度之间的解析关系，提出了在CRS道集通过优化三参数实现速度估计的CRS道集偏移速度建模方法．模型试算表明，这种速度建模方法效率较高，速度分析精度取决于优化三参数的精度，适于较复杂地质体的速度建模．
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| 关 键 词： | CRS叠加& CRS道集& 偏移速度建模& 优化三参数& 层剥离 |
| 文章编号： | 0253-3782(2003)04-0406-09 |
| 修稿时间： | 2002年7月8日 |
MIGRATION VELOCITY MODELING BASED ON COMMON REFLECTION SURFACE GATHER |
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| Li Zhenchun Yao Yunxia Ma Zaitian Wang Huazhong College of Earth Resources and Information,University of Petroleum,Dongying ,China College of Marine Geology and Geophysics,Tongji University,Shanghai ,China.MIGRATION VELOCITY MODELING BASED ON COMMON REFLECTION SURFACE GATHER[J].Acta Seismologica Sinica,2003,25(4):406-414. |
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| Authors: | Li Zhenchun Yao Yunxia Ma Zaitian Wang Huazhong College of Earth Resources and Information University of Petroleum Dongying China College of Marine Geology and Geophysics Tongji University Shanghai China |
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| Institution: | Li Zhenchun 1) Yao Yunxia 1) Ma Zaitian 2) Wang Huazhong 2) 1) College of Earth Resources and Information,University of Petroleum,Dongying 257061,China 2) College of Marine Geology and Geophysics,Tongji University,Shanghai 200092,China |
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| Abstract: | The common reflection surface (CRS) stack is a new seismic imaging method, which depends on near surface velocity instead of macro velocity model. According to optimized three parameters obtained by CRS stacking, we derived an analytical relationship between three parameters and migration velocity field, and put forward CRS gather migration velocity modeling method, which realize velocity estimation by optimized three parameters in CRS gather. The test of a sag model proved that the method is more effective and adaptable for the velocity modeling of a complex geological body, and the accuracy of velocity analysis depends on the precision of optimized three parameters. |
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| Keywords: | CRS stack CRS gather migration velocity modeling optimized three parameters layer stripping |
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