Abstract：As a special kind of reservoir lithology,volcanic rocks are very complicated.It is difficult to predict them based on seismic data.In this paper we focus on seismic complex structural imaging in the Dehui Area,Jilin,especially on volcanic rock imaging.The key problem of accurate imaging of complex structures is not migration algorithm,but the velocity model accuracy.According to our experience of Dehui volcanic rock imaging,we optimize tomography velocity with GS-beam and GS-tom in GeoEast to improve velocity model accuracy.Real data processing results verify the feasibility and effectiveness of the tomographic velocity optimization and volcanic rock depth imaging.
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