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

  • 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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  • 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 date: 2001-12-03

  Revised date: 2001-12-03

  Online published: 2002-03-18

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.

Cite this article

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 . Methodology and Application for 3D Wave-Equation Symplectic Prestack Depth Migration[J]. Journal of University of Chinese Academy of Sciences, 2002 , 19(2) : 134 -140 . DOI: 10.7523/j.issn.2095-6134.2002.2.007

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