井间地震射线追踪正演及数值计算

英文篇名：Forward and Numerical Simulation of Interwell Seismic Ray Trace
中文刊名：石油天然气学报
英文刊名：Journal of Oil and Gas Technology
作者：窦玉坛
英文作者：DOU Yu-tan(Authors Address ; Northwest Branch ; Research Institute of Petroleum Exploration and Development ; PetroChina ; Lanzhou730020 ; Gansu ; China)
中文关键词：井间地震 ; 射线追踪 ; 正演模拟
英文关键词：interwell seism ; ray trace ; forward modeling
出版日期：2013-04-15
机构：中国石油勘探开发研究院西北分院;
年：2013
期：04
出版单位：石油天然气学报

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.

引文

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