摘要
井间地震射线追踪正演模拟是根据射线理论确定射线轨迹和波的传播时间的一种正演模拟方法。探讨了其正演模拟步骤,并利用VB语言编写了相应的射线追踪正演模拟程序。利用编制的程序进行了三层水平界面模型、四层倾斜界面模型、尖灭模型共3种模型的数值模拟试验,分析了其波场特征,各种波的位置关系与理论的时距曲线符合较好,验证了所编正演程序的有效性。
The ray tracing and forward modeling in interwell seism could compute ray track and time of wave travel according to ray theory.In this paper,the procedures for the ray trace modeling were presented,and it was programmed for a forward modeling of tracing by VB Language.By using three theoretical models including three level interface models,three level interface models and a wedge model,the corresponding wave field is analyzed in detail,it is indicated that various wave position relations are in good agreement with theoretical time-distance curves,and it can efficiently verify its validity.
出处
《石油天然气学报》
CAS
CSCD
2013年第4期70-73,166-167,共4页
Journal of Oil and Gas Technology
关键词
井间地震
射线追踪
正演模拟
interwell seism
ray trace
forward modeling
