成都理工大学学报（自然科学版）2017，Vol.44Issue(5)：513-520,8.DOI:10.3969/j.issn.1671-9727.2017.05.01
VTI介质三维VSP多波联合叠前AVA岩性参数反演方法及应用
The lithologic parameter inversion method and its application by multiwave joint pre-stack AVA of three-dimensional vertical seismic profile for VTI media
摘要
Abstract
The three-dimensional and three component (3D 3C) VSP belong to the underground seismic exploration method,and the VSP data contain abundant depth and lithology information.Therefore,three-dimensional and three component (3D 3C) VSP have incomparable advantage over ground seismic.Accurate inversion of lithology and elastic parameters is needed by three-dimensional and three component VSP data in the subsequent application to precise prediction of reservoir and recognition of fluid property,so as to improve the success rate of oil and gas exploration.Exact multiwave amplitude-versus-angle (AVA) equations are studied based on the theory of elastic wave propagation in anisotropic media (VTI),and the theory and method for three-dimensional (3D) vertical seismic profiling (VSP) of multiwave joint pre-stack AVA lithologic parameter inversion for anisotropic media are established.This method directly inverts the P-wave (compressional wave) velocity,S-wave (shear wave) velocity,density,and two anisotropy coefficients of strata by using normal move out gathers from 3D three-component (3C) VSP data processing.Based on these inversions,the elastic parameters of the strata,which are important in identification of lithology and fluids,can be further calculated.This method of P-wave and S-wave joint pre-stack inversion is suitable for 3D 3C VSP data of vertical and inclined drilling wells.This method is proved to be correct and effective in the practical validation of inclined drilling well,which is predicted by actual processing of 3D 3C VSP data.关键词
3D 3C VSP/叠前岩性参数反演/叠前弹性参数反演/储层预测/VTI介质AVAKey words
3D 3C VSP/pre-stack lithologic parameter inversion/pre-stack elastic parameter inversion/reservoir prediction/VTI medium/AVA分类
天文与地球科学引用本文复制引用
李录明,罗省贤..VTI介质三维VSP多波联合叠前AVA岩性参数反演方法及应用[J].成都理工大学学报（自然科学版）,2017,44(5):513-520,8.基金项目
国家科技重大专项(2008ZX05024-001). （2008ZX05024-001）
