【摘要】 介绍了Walkaway VSP观测系统及Walkaway VSP地震波类型。结合模型的理论基础,以及射线理论,阐述了任意倾角多界面情况下,Walkaway VSP射线追踪模型的制作方法,论述了试射法原理。结合Walkaway VSP模型,使用Fortran语言编写程序,实现了Walkaway VSP试射法正演模拟。利用Fortran编写的程序试算了3个模型,成功得到了任意倾角多界面情况下其射线追踪结果图和合成地震记录图,验证了程序算法的正确性和有效性。更多还原

【Abstract】 As a more convenient way of observing,the forward modeling method of Walkaway VSP trial ray method has been widely applied in oilfield exploitation.This article firstly introduces the observing system and seismic wave type of Walkaway VSP.Combined with the model’s theoretical basis and the ray theory,the article expounds the method of making the Walkaway VSP ray tracing model under any arbitrary angle and multi-interface.In the part of the theory,the article discusses the principle of the trial ray method.Combined with the Walkaway VSP model,the article uses the Fortran language to write the programs,which achieves the forward modeling of Walkaway VSP trial ray method.In this Article,three models have been trialed by the program written in Fortran language and the test has successfully got the results map of ray tracing and synthetic seismograms under any arbitrary angle and multi-interface,which verify the correctness and effectiveness of the program algorithm.更多还原