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《Progress in Geophysics》 2008-02
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Target-oriented layout designing method based on wave equations

JIANG Tao1,FU Li-yun1,WAN Xue-jian2,TAO Yi1(1.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijng 100029,China;2.Institute of Acquisition Technology,Geophysical Prospecting Company,ZhongYuan Oil Field,Puyang 457001,China)  
A target-oriented layout designing method guided by wave equation forward modeling in complicated structure areas is proposed in this paper.This method is implemented by using the staggered-mesh finite-difference(FD)method in velocity-stress 2D acoustic wave equations.The fourth-order FD operator on staggered-meshes and perfectly matched layer(PML)absorbing boundary condition are applied.By analyzing numeral results of the synthetic model,we illuminate how to match the surface seismic response with the underground target structure.By analyzing numeral results of the practical model in Qiao Kou area,we indicate that the forward modeling method is based on wave equations better than conventional methods in areas with complicated miniature fault-block and salt anticline for which shows more accurate image,therefore it is more propitious to analyze and guide the design of seismic layout.We set constrains of offset by tracking reflected events of target zone and obtaining the receiving range on the surface.We choose the best trace distance by comparing different simulated records and considering the cost and goals of the project.Finally,Layout parameters which meet the design requirement are obtained.
【CateGory Index】: P631.4
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