二维交错网格纵横波分离的弹性波模拟及应用

Elastic wave simulation of P-and S-waves separation by 2-D staggered grid and application

本文通过对弹性波二阶方程纵波和横波分离方法以及一阶交错网格方法的系统研究,提出了在一阶交错网格下的纵波和横波分离模拟的方程表达式。在该方法的模拟过程中纵横波自然分开而不是耦合在一起,产生了全纵波和全横波模拟记录。数值模拟的结果验证了该方法的正确性。通过全纵波和全横波的模拟研究,对认识弹性波的传播规律以及指导油藏数值模拟具有重要现实意义。

Through systematically studying on the method separating P-wave from S-wave by second-order elastic wave equation and first-order staggered grid algorithm,the paper presented the formula representation simulating P-and S-waves separation in first-order staggered grid.The P-and S-waves are naturally separated but do not be coupled together in a simulating process of the method,producing full P-wave and full S-wave simulated records.The results of numeric simulation showed the correctness of the method.There ...