| Migration velocity modeling based on common reflection surface gather |
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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]CollegeofEarthResourcesandInformation,UniversityofPetroleum,Dongying257061,China [2]CollegeofMarineGeologyandGeophysics,TongjiUniversity,Shanghai200092,China |
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| 基金项目： | State Natural Science Foundation of China (49894190-024). |
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| 摘 要： | The common-reflection-surface (CRS) stacking is a new seismic imaging method, which only depends on seismic three parameters and 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 optimizing three parameters in CRS gather. The test of a sag model proved that this method is more effective and adaptable for 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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| 关 键 词： | CRS 地震波 成像方法 聚集 移动速率模型 最优三参量 |
| 收稿时间： | 8 July 2002 |
| 修稿时间： | 9 December 2002 |
Migration velocity modeling based on common reflection surface gather |
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| Li Zhen-chun , Yao Yun-xia , Ma Zai-tian and Wang Hua-zhong.Migration velocity modeling based on common reflection surface gather[J].Acta Seismologica Sinica(English Edition),2003,16(4):430-440. |
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| Authors: | Li Zhen-chun Yao Yun-xia Ma Zai-tian and Wang Hua-zhong |
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| Institution: | 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) stacking is a new seismic imaging method, which only depends on seismic three parameters and 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 optimizing three parameters in CRS gather. The test of a sag model proved that this method is more effective and adaptable for 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 stacking CRS gather migration velocity modeling optimized three parameters layer stripping |
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