The first step , designs the four fractured reservoir models which bases on the geological characters of the analysis field , with the forward modeling and depth migration of poststack seismic wavefield gains the record of the forward and the profile of the migration 第一步，建立了四个理论模型(根据研究区域地质特征确定的) ，并对四个模型进行了正演和偏移处理，得到了这些理论模型的地震响应特征。
