摘要
高斯射线束法是一种快速的地震记录合成方法,通过该方法合成的波场记录不仅能反映波的运动学特征,也能反映高频动力学特征。该方法将波动方程和射线理论紧密结合起来,通过运动学射线追踪获取射线轨迹,通过动力学追踪来获取中心射线附近的高频能量分布,因而既能反映波的运动学特征,又能表现波的动力学特点,并且具有运算速度快、精度高等优点。介绍了高斯射线束的基本原理,对基于高斯射线地震记录合成软件的研发进行了系统论述,重点介绍了模型编辑、运动学射线追踪、动力学射线追踪和地震记录合成等重要模块的实现方法,通过几个地质模型合成记录的算例,说明了高斯射线束法对复杂地层模型和奇异区域都具有较好的效果,是一种高效实用的地震记录合成方法。
Gauss beam of rays method is a rapid seismogram synthesis method.The wave field synthesized by this method can not only reflect dynamics features of the wave,but also can reflect high frequency dynamics features.The method combines wave equation with ray path theory,obtains ray tracts and high frequency energy distribution around central ray through kinematical ray tracing.Therefore,it can reflect not only kinematical features but also the dynamical features of the wave.Moreover,it has advantages of high calculation speed and high accuracy.This paper introduces the fundamentals of Gauss beam of rays theory,and systematically presented research and development of Gauss beam of rays seismogram synthesis software.The realization methods of the key modules are introduced in priority including model editing,kinematical ray tracing,dynamical ray tracing and seismogram synthesis.Calculation cases of several geological model synthetic seismograms show that Gauss beam of rays method is an efficient and practical seismogram synthesis method with favorable effect in complex formation model and in abnormal areas.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2006年第6期93-97,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
国家博士点基金
项目编号20040616003
