各向异性介质转换波速度逐层单参数分析方法  

AN ANALYSIS OF CONVERTED-WAVE VELOCITY IN ANISOTROPIC MEDIA

作　　者：李勤[1] 李庆春[1] 

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《物探与化探》2011年第2期270-273,共4页Geophysical and Geochemical Exploration

基　　金：博士点基金课题(20070710001);国家863课题(2007AA06Z103);西部交通建设项目(200731881262)

摘　　要：转换波的时距曲线是非双曲线方程,由于介质的各向异性,使得转换波在实际地层中的传播更为复杂。针对各向异性介质中PSV转换波的速度分析展开讨论,鉴于各向异性介质的PSV波速度分析不能脱离PP波数据而单独进行,在学习前人研究成果的基础上,充分利用PP波速度分析的有效信息,对PSV转换波进行逐层单参数分析,在一定程度上简化了速度分析的程序,提高了速度分析的精度,并通过理论模型试算,验证了方法的正确性和可行性。The converted-wave time curve is non-hyperbolic and becomes more complex in anisotropic media.This paper has mainly discussed the method for anisotropic velocity analysis of PSV wave and conducted a velocity analysis of converted-wave in one-parameter method based on previous research results.As the velocity analysis of PSV wave is not independent from PP wave data,the authors made use of efficient information on PP wave data,simplified the procedure of velocity analysis and obtained the information of velocity and anisotropic parameters.To some extent,the authors＇ study improves the accuracy and efficiency and proves to be effective,as shown by the results of the model test.

关 键 词：各向异性 转换波 速度分析 

分 类 号：P631.4[天文地球—地质矿产勘探]