Abstract：Longmen Piedmont belt in Northwest Sichuan is characterized by intense surface undulation,rapid outcrop lithology change,target deep burial,thin beds,and well-developed faults.And complex underground structures lead to complex seismic wavefield,unclear seismic responses of reservoir.It is very difficult to achieve high-resolution migration imaging.To solve the problem,an integrated strategy is achieved with distinctive tools provided by GeoEast System.For data processing,uphole-information constrained tomography statics,integrated near-surface & subsurface velocity modeling,offset vector tile (OVT),and Q depth migration are used.The seismic data frequency band is broadened thanks to fidelity and preserved-amplitude approaches.Faults and breakpoints are highlighted and seismic response characteristics are much clear-er,which provides good data for structural interpretation and reservoir description of targets in Shuangyushi Area,Northwest Sichuan,and effectively supports the well deployment and future exploration.
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