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中国科学院大学学报 ›› 2002, Vol. 19 ›› Issue (2): 134-140.DOI: 10.7523/j.issn.2095-6134.2002.2.007

• 论文 • 上一篇    下一篇

波动方程辛几何算法三维叠前深度偏移流程及应用

刘礼农1, 刘洪1, 李幼铭1, 李建勇1, 李冰1, 陈树民2, 范兴才2, 张尔华2, 裴江云2, 年静波2   

  1. 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
  • 收稿日期:2001-12-03 修回日期:2001-12-03 发布日期:2002-03-18
  • 作者简介:刘礼农,男,1974年1月生,博士生
  • 基金资助:

    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 )

Methodology and Application for 3D Wave-Equation Symplectic Prestack Depth Migration

LIU Li-Nong1, LIU Hong1, LI You-Ming LI Jian-Yong1, LI Bing1, CHEN Shu-Min1, FAN Xing-Cai2, ZHANG Er-Hua2, PEI Jiang-Yun2, NIAN Jing-Bo2   

  1. 1. Institute of Oceanology of the Chinese Academy of Sciences, Qingdao 266071;
    2. The Graduate School of the Chinese Academy of Sciences, Beijing 100039
  • Received:2001-12-03 Revised:2001-12-03 Published:2002-03-18

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。

关键词: 波动方程, 叠前深度偏移, 速度分析, 并行计算

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.

Key words: wave-equation, prestack depth migration, velocity analysis, paralell computing

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