斜井三维VSP多波射线正演方法  

3D VSP ray-traing method of multiwave forword modeling in deviated well

作　　者：邓颖华[1] 丁拼搏[1] 赵俊省 任仕超[3] 

机构地区：[1]成都理工大学信息工程学院地球探测与信息技术教育部重点实验室,四川成都610059 [2]中国石油大学资信学院,北京102200 [3]大港油田,天津300280

出　　处：《煤田地质与勘探》2011年第4期59-63,共5页Coal Geology & Exploration

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.

关 键 词：斜井 三维VSP 多波射线追踪 正演模拟 

分 类 号：P631[天文地球—地质矿产勘探]