摘要
基于费马原理和Snell定理,对三维VSP两点射线追踪问题作了研究,给出了三维逐段迭代射线追踪算法的计算公式;同时考虑射线入射到界面时能量分配问题,探讨了三维介质条件下射线追踪计算方法。对斜井VSP三维任意起伏层状介质中多波进行正演模拟,结果表明:该方法可行性和有效性较高,计算速度快,且计算精度高。
Based on Snell law and Femat principle,the two point ray tracing method for three-dimensional VSP was studied,and the calculating formulas of 3D segment iterative ray-tracing algorithm was given,then the iterative ray-tracing in three-dimensional medium was conducted by taking energy characteristics of the seismic ray into account.Multiwave forward modeling of deviated well in 3D complex medium was carried out.The results of modeling showed that this algorithm is fast and its calculating precision is high.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2011年第4期59-63,共5页
Coal Geology & Exploration
