中文摘要：

波场数字仿真是识别和分析井间地震波场的有效手段。从VTI介质中的一阶应力-速度弹性波动方程出发,采用交错网格的高阶有限差分格式,在2D模型介质中计算三分量弹性波场,实现2.5D数值模拟。采用PML吸收边界条件压制边界反射。利用本文方法合成的井间地震记录与实际采集的井间地震记录的运动学特征和动力学特征有较好的一致性。

英文摘要：

Numerical simulation is an effective approach for identifying and analyzing wavefields of cross-hole seismic. From the first-order stress-velocity elastic wave equations in VTI medium, this paper use high-order stagger-grid finite-difference scheme to compute 3C wavefields in 2D space, performing 2.5D simulation. Boundary reflections are suppressed successfully by PML. Characteristics of synthetic data by this method are coincident with field data in both kinematics and dynamics.