各向异性介质多波速度分析方法及软件实现  

METHOD AND IMPLEMENTATION OF MULTI-WAVE VELOCITY ANALYSIS IN ANISOTROPIC MEDIA

作　　者：李军[1] 胥良君[2] 斯兴焱[1] 李录明[1] 

机构地区：[1]成都理工大学地球探测与信息技术教育部重点实验室,成都610059 [2]西南油气田分公司重庆气矿,重庆400021

出　　处：《物探化探计算技术》2010年第4期353-358,335-336,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：教育部博士点基金资助(20070616004)

摘　　要：速度分析是多波资料处理的核心问题之一,在高精度地震勘探的今天,建立在各向同性假设条件下的速度分析已经不能满足高精度勘探要求。这里以自然界广泛存在的具有垂直对称轴的横向各向同性(VTI)介质为基础,研究各向异性条件下P波和P～SV转换波旅行时公式,并进一步研究了P波和P～SV转换波速度分析的方法步骤,在此基础上用QT开发出一套各向异性介质多波速度分析的交互处理软件。用该方法及软件对理论资料和实际资料进行处理,取得了较好的处理效果,验证了该方法及软件的正确性。Velocity analysis is a core step of the multi-wave data process.However,In the rapid development of high-precision seismic exploration today,the velocity analysis based the isotropic assumption can't meet the precision requirements of exploration.In this paper,we study the travel-time equations of P and P～SV converted wave in transversely isotropic media with a vertical symmetry axis(vertical transverse isotropy(VTI)).Then we study further in the method and the step of anisotropic multi-wave velocity analysis.Based on the theory,we have developed an interactive software for anisotropic multi-wave velocity analysis by QT.The theoretic and real data processing verifies the correctness and validity of the method and software.

关 键 词：各向异性 速度分析 多波 QT 

分 类 号：P631.4[天文地球—地质矿产勘探]