火焰山三维层速度模型与成像效果

在复杂地表条件和复杂地质构造条件下，地震资料处理的关键主要表现为静校正和成像，而这两者均与速度模型有关。本文分析了表层模型、近地表模型和层速度模型对静校正和成像问题的影响，研究了静校正和地震成像以及速度模型在资料处理过程中的相互关系，提出了在速度模型里包含地表高程和近地表模型的叠前深度偏移实现方法，合理地解决了地表高程、地表风化层、近地表地层对静校正和地震成像的综合影响，取得了良好的应用效果。

3-D interval velocity model and imaging effect on Huoyan Mountains.

The key of seismic data processing mainly lies in static corrections and imaging and both of them are relative to velocity model in complex near-surface and underground geologic structural conditions.The paper analyzed the influence of surface model,near-surface model and interval velocity model on static corrections and imaging,studied mutual relation among static corrections and imaging as well as interval velocity model in the procedure of data processing,presented the realized methods of prestack depth migration when the velocity model included surface elevation and near-surface model and reasonably solved the combined influence of surface elevation,surface weathered layer and near-surface layers on static corrections and seismic imaging,which achieved good applied results.