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《Progress in Geophysics》 2008-02
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Review of using CFP technology to resovle complex near surface rroblems

LI Zhen-chun1,AI Xiu-juan1(China University of Petroleum,Dongying 257061,China)  
Complex near surface condition degrades the quality of seismic data.Conventionally we adopt the time shift static correction based on surface consistency to eliminate its effects.Velocity analysis and statics are coupled,but to determine velocity of complex near surface is quite difficult.Handling complex near surface problem based on common focus point avoid direct operation for velocity,which make statics and velocity be independent.Firstly we estimate operator of wavefield propagation by the prestack data,it updated operators DTS(different time shift)panel by the principle of equal traveltime,then make use of these updated operators to redatum and a one-way time image of near surface.Obtaining correct operator amplitude is also key to redatuming.
【Fund】: 国家自然科学基金(40474041);; 国家863专题(2006AA06Z206);; 中原油田博士后科研工作站和CNPC物探重点实验室中国石油大学(华东)研究室联合资助
【CateGory Index】: P631.4
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