| 横向各向同性介质优化差分系数法地震波场数值模拟 |
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| 引用本文： | 杜启振,白清云,李宾.横向各向同性介质优化差分系数法地震波场数值模拟[J].石油地球物理勘探,2010,45(2):176. |
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| 作者姓名： | 杜启振 白清云 李宾 |
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| 作者单位： | 中国石油大学(华东)地球资源与信息学院;中海石油(中国)有限公司天津分公司勘探开发研究院; |
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| 基金项目： | 教育部新世纪优秀人才支持计划(资助号:NCET-07-0845); 国家高新技术研究发展计划(批准号:2006AA06Z202); 中国石油天然气集团公司创新基金(批准号:05E7028); 中国石油天然气集团公司物探重点实验室开放基金(批准号:GPKL0802)联合资助 |
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| 摘 要： | 在应用有限差分法地震波场数值模拟过程中，数值频散是关键问题之一。为压制地震波场模拟中的数值频散，针对1阶速度—应力方程的交错网格空间离散差分算子，本文分别引入强约束条件和弱约束条件，构造了不同的Lagrange函数；然后通过求取条件极值得到优化差分算子。将其应用于横向各向同性(VTI)介质波场数值模拟，结果表明采用优化空间差分算子能有效压制数值频散，并可提高差分近似导数的精度。
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| 关 键 词： | 波场模拟 优化差分系数 有限差分 数值频散 强约束条件 弱约束条件 横向各向同性介质 |
Optimized difference coefficient method seismic wave field numerical simulation in vertical transverse isotropic medium |
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| Du Qi-zhen,Bai Qing-yun , Li Bin. . College of Geo-resources , Information,China University of Petroleum ,Dongying City,Sh,ong Province,China. Exploration , Development Institute of Tianjin Branch company,CNOOC,Tianjin City,China.Optimized difference coefficient method seismic wave field numerical simulation in vertical transverse isotropic medium[J].Oil Geophysical Prospecting,2010,45(2):176. |
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| Authors: | Du Qi-zhen Bai Qing-yun Li Bin College of Geo-resources Information China University of Petroleum Dongying City Sh ong Province China Exploration Development Institute of Tianjin Branch company CNOOC Tianjin City China |
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| Affiliation: | Du Qi-zhen1,Bai Qing-yun1 and Li Bin2. 1. College of Geo-resources and Information,China University of Petroleum (East China),Dongying City,Shandong Province,257061,China2. Exploration and Development Institute of Tianjin Branch company,CNOOC,Tianjin City,300452,China |
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| Abstract: | In applying finite difference seismic wave field numerical simulation, the numerical dispersion is one of key issues. In order to suppress numerical dispersion in seismic wave field simulation the difference operator was discreted in staggered grid space of one-order velocity-stress equation, in this paper strong constraint condition and weak constraint condition were introduced, different Lagrange functions were constructed respectively, then optimized difference operator was obtained through estimation of... |
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| Keywords: | wave field simulation optimized difference coefficient finite difference numerical dispersion strong constraint condition weak constraint condition transversally isotropic medium |
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