摘要
从各向异性介质中最为普遍的裂隙各向异性介质出发，推导了同零井源距ＶＳＰ三分量观测方式相一致的一维三分量波动方程．为了更符合实际观测，引入了坐标旋转，可以模拟井中任意方位的多层各向异性介质的波场响应．用有限元方法进行了波场数值模拟，重点突出了获得凡Ｒ３×３矩阵剖面的方法，同时对Ｒ３×３，矩阵剖面进行了一般性的分析解释，事实证明，Ｒ３×３矩阵剖面含有介质丰富的各向异性信息．
From considering common cracks anisotropic medium in anisotropic media, 1D3-component equation is calculated. The equation is similar in zero-section VSP survey. In order to conform to readily, the paper leads into coordinate rotation so that wave field of multi-layers anisotropic media about arbitrarily azimuth in well can be modeled. Using finite element method, numerical modeling are achieved.Obtaining R3×3 matrix section is emphasized specially, and so R3×3 matrix section is ordinarily analyzed and explained. The several special wave phenomena are stressed.In fact, rich anisotropic information is contained in R3×3 matrix section.
出处
《地球物理学报》
SCIE
EI
CSCD
北大核心
1995年第4期519-527,共9页
Chinese Journal of Geophysics
基金
国家自然科学基金
关键词
裂隙
异性介质
多分量
地震勘探
数值模拟
Cracks anisotropic media
Survey of directional shot and multicomponent recording
Finite element method
Matrix section.
