波动方程辛几何算法三维叠前深度偏移流程及应用 |
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作者姓名: | 刘礼农 刘洪 李幼铭 李建勇 李冰 陈树民 范兴才 张尔华 裴江云 年静波 |
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作者单位: | 1. 中国科学院地质与地球物理所, 北京 100101;
2. 大庆油田有限责任公司勘探开发研究院, 大庆 163712 |
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基金项目: | 中国科学院知识创新工程重大项目资助课题(KZCXI -y0 1);国家自然科学基金和大庆石油管理局联合资助项目(49894190 );国家高性能计算机基金资助项目(2 0 0 0 12 3 ) |
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摘 要: | 简述具有二阶精度的三维波场延拓保辛算子,结合复杂介质地震成像的实施流程,着重阐明:(1 )地震资料的相关预处理;(2 )25维叠前深度偏移速度估计;(3)三维叠前深度偏移成像实现。还给出对SW地区 126km2 三维地震资料处理的算例。结果表明,该算法流程实用性能良好。
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关 键 词: | 波动方程 叠前深度偏移 速度分析 并行计算 |
收稿时间: | 2001-12-03 |
修稿时间: | 2001-12-03 |
Methodology and Application for 3D Wave-Equation Symplectic Prestack Depth Migration |
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Authors: | LIU Li-Nong LIU Hong LI You-Ming LI Jian-Yong LI Bing CHEN Shu-Min FAN Xing-Cai ZHANG Er-Hua PEI Jiang-Yun NIAN Jing-Bo |
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Institution: | 1. Institute of Oceanology of the Chinese Academy of Sciences, Qingdao 266071;
2. The Graduate School of the Chinese Academy of Sciences, Beijing 100039 |
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Abstract: | A three-dimensional wavefield extrapolation operator with second-order precision keeping symplectic nature is described in this paper. The flow chart of wave-equation prestack depth migration is consists of three main parts: (i)seismic data relative preprocessing; (ii) 2.5D prestack depth migration velocity analysis; (iii)3D prestack depth migration. A 3D seismic data processing example of this approach of SW area, which is 126 km2 square, is proposed, and the result shows satisfied application ability of the flow. |
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Keywords: | wave-equation prestack depth migration velocity analysis paralell computing |
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