摘要
本文基于各向异性运动学射线追踪和动力学射线追踪,在各向同性高斯束叠前深度偏移算法的基础上,给出了各向异性高斯束叠前偏移方法原理,提出了一种适用于VTI介质的P波高斯束叠前深度偏移方法。针对水平层状VTI介质模型,分析了各向异性参数ε和δ对高斯束叠前深度偏移的影响。对多层页岩模型和SEG/Hess模型偏移试算结果表明,本文方法是一种准确有效的VTI介质叠前深度偏移方法。
Based on anisotropic kinematic and dynamic ray tracing systems,a P-wave Gaussian beam prestack depth migration method for VTI media is introduced in this paper.The imaging principle of anisotropic Gaussian beam prestack depth migration is presented on the basis of Gaussian beam prestack depth migration algorithm in isotropic media.For horizontally layered VTI media model,the influence of anisotropic parameters on Gaussian beam prestack depth migration is illustrated.Tests of multi-layer shale model and SEG/Hess model show that the proposed method is an accurate and efficient anisotropic prestack depth migration approach in VTI media.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2015年第2期267-273,3,共7页
Oil Geophysical Prospecting
基金
国家自然科学基金项目(41425017
41104084)
科技部"863"课题"多分量地震裂缝检测与油气识别技术"(2013AA064201)联合资助
