Effects of anisotropy on time-depth relation in transversely isotropic medium with a vertical axis of symmetry

作     者：FA Lin CASTAGNA John P ZENG ZhengWen BROWN Ray L ZHAO MeiShan 

作者机构：School of Electronic Engineering Xi'an University of Posts and Telecommunications Xi'an 710061 China Department of Earth and Atmospheric Sciences University of Houston Houston TX 77204 USA Department of Geology and Geological Engineering University of North Dakota Grand Forks ND 58202 USA Ray Brown Creative Interpretation Processing Norman OK 73071 USA The James Franck Institute and Department of Chemistry The University of Chicago Chicago IL 60637 USA 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2010年第55卷第21期

页      面：2243-2251页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by the National Natural Science Foundation of China(40974078) the US Department of Energy(DE-FC2608NT0 005643) the Natural Science Foundation of Shaanxi Province,China (2007D15) North Dakota Industrial Commission with five industrial companies:Encore Acquisition,Hess,Marathon Oil,St.Mary Land & Exploration,and Whiting Petroleum(NDIC-G015-031) 

主　　题：介质各向异性 横观各向同性 地震反射数据 对称轴 各向异性参数 速度分析 垂直 作者 

摘      要：It is known that rock anisotropy can significantly influence the phase and energy velocities of an elastic wave,as well as its reflection/transmission(R/T)*** a result,it can distort the velocity analysis of seismic-reflection *** this work we present a velocity analysis for seismic-reflection data based on the available anisotropic rock *** analyzed the created errors on time-depth relation of the seismic-reflection data in neglecting rock anisotropy and/or neglecting the difference between energy velocity and phase velocity,including the case of wide-angle *** calculated results show that the effect of rock anisotropy on time-depth relation of seismic-reflection data is dependent not only on the values of anisotropic parameters,but also on the space arrangement of both source and *** all studied cases(weak,moderate or strong anisotropy),we found that the effect of rock anisotropy on time-depth relation could not be ***,for the case of weak anisotropy,the energy velocity may be replaceable by the phase velocity to obtain a very good approximation on time-depth ***,the seismic-reflection data processing algorithm for numerical computations can be simplified.