声波高阶有限差分法三维VSP数值模拟  

3D VSP numerical simulation by acoustic high-order finite difference method

作　　者：张明秀[1] 赵茂强[1] 

机构地区：[1]胜利油田分公司物探研究院,山东东营257022

出　　处：《油气地球物理》2014年第1期24-28,共5页Petroleum Geophysics

摘　　要：采用声波高阶有限差分算法,克服了有限差分法本身存在的数值频散问题,使用了最佳匹配层吸收边界,较好地消除了边界反射,成功模拟了VSP波场在地下介质中的传播情况。通过三维VSP数值模拟,获得了分辨反射波、绕射波等各种波形的声波VSP剖面,证实了该方法的有效性。The numerical dispersion existed in self-finite difference method is solved by the acoustic high-order finite difference method, the boundary reflection is removed effectively by perfect matching layer （PML） absorption boundary, the VSP wavefield propagated in subsurface medium is simulated successfully .finally. Some VSP profiles of different acoustic wave are obtained by 3D VSP numerical simulation, and the validity of the method is confirmed.

关 键 词：数值模拟 高阶有限差分 最佳匹配层吸收边界 垂直地震剖面 

分 类 号：P631.443[天文地球—地质矿产勘探]