Abstract：In forward modeling methods of surface seismic,only upgoing reflection waves were considered,and the information such as transmission wave,interlayer direct wave and downgoing wave were not involved.Furthermore,these methods are only suitable for simple layered model while it cannot be applied to crosswell seismic.In this paper,a kinematic forward modeling method for crosswell seismic is introduced.First,a model building method based on block units is used to build a crosswell seismic geological model.Then,the trial-ray method is used for ray tracing of the geological model.Finally,crosswell synthetic data are obtained.The results show that this forward modeling method based on block units can simulate complex geological structures with faults,pinchouts and so on.The iterate rays converge more quickly in simple models than in complex models.Crosswell seismic wave fields can be identified by crosswell seismic ray-tracing and croswell synthetic data.
李辉峰, 王彦军, 范廷恩. 基于块状模型的井间地震运动学正演方法[J]. 石油地球物理勘探, 2011, 46(2): 196-201.
LI Hui-feng, WANG Yan-jun, FAN Ting-en. Kinematic forward modeling based on block-model for crosswell seismic. OGP, 2011, 46(2): 196-201.
