| 转换波波动方程叠前深度偏移 |
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| 引用本文： | 刘奇琳.转换波波动方程叠前深度偏移[J].物探化探计算技术,2012,34(2):198-203,9. |
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| 作者姓名： | 刘奇琳 |
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| 作者单位： | 中国石油化工股份有限公司 西南分公司博士后科研工作站,成都610081;中国石油化工股份有限公司 西南油气分公司,成都610000;中国石油化工股份有限公司 西南油气分公司勘探开发研究院德阳分院,德阳618000 |
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| 摘 要： | 克希霍夫叠前时间偏移被广泛运用于转换波地震成像领域,该方法具有计算效率高、速度模型易于获取的优点。但是,纵横波速度差使纵波和转换波的成像在时间域不匹配,且克希霍夫偏移也无法较好地处理多次到达和保幅等问题。这里提出一种基于波动方程的转换波叠前深度偏移方法,以改善克希霍夫时间偏移的不足。
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| 关 键 词： | 转换波 叠前深度偏移 偏移速度分析 |
WAVE EQUATION PRE-STACK DEPTH MIGRATION FOR CONVERTED WAVE |
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| LIU Qi-lin.WAVE EQUATION PRE-STACK DEPTH MIGRATION FOR CONVERTED WAVE[J].Computing Techniques For Geophysical and Geochemical Exploration,2012,34(2):198-203,9. |
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| Authors: | LIU Qi-lin |
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| Institution: | LIU Qi-lin(1,2,3)(1,Post-doctor Research Workstation, SWPB SINOPEC,Chengdu 610081,China; 2.Southwest Petroleum Branch,SINOPEC, Chengdu 610000,China;3.Deyang Branch Institute E&P Research Institute,SWPB SINOPEC, Deyang 618000,China) |
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| Abstract: | Kirchhoff pre-stack time migration has being widely used in the field of converted wave imaging. This method has two advantages,high computational efficiency and acquiring velocity model easily.However,for the velocity discrepancy between P and S wave,the images cannot correspond to each other at temporal domain,and Krchhoff migration cannot handle problems well, such as multi-path,amplitude preservation.In the paper,we introduce a converted wave migration based on wave equation,which supposed to overcome the shortcoming of kirchhoff time migration. |
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| Keywords: | converted wave pre-stack depth migration migration velocity analysis |
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