物探与化探2024，Vol.48Issue(2)：443-450,8.DOI:10.11720/wtyht.2024.1251
不同方位各向异性反演技术对比和总结
Comparison and summary of different azimuthal anisotropy-based inversion techniques
摘要
Abstract
The progress in seismic acquisition techniques characterized by wide azimuths,wide frequency bands,and high densities has greatly promoted the application of the prestack P-wave fracture inversion technique based on the azimuthal anisotropy theory.Azimuthal anisotropy-based inversion can yield the azimuths and intensities of fractures.However,different inversion techniques yield different pa-rameters for fracture intensity characterization,resulting in inconsistent inversion results.Consequently,the azimuthal anisotropy-based inversion results of fractures are non-unique,leading to confusion about accurate results.Based on the Thomsen anisotropy theory,as well as the interrelationships between fracture models(the Hudson coin model and the Schoenberg linear sliding model),this study es-tablished the connections of anisotropic parameters between different fracture inversion techniques(VVAZ,Ruger's approximation,and Fourier series),presenting the real meanings and mathematical expressions of results from different azimuthal anisotropy-based fracture inversion techniques.Additionally,this study summarized the relationships of parameters between different inversion techniques and fracture models,further deepening the research on azimuthal anisotropy-based fracture inversion.This study lays solid theoretical and technical foundations for large-scale fracture detection based on the seismic data obtained using the seismic acquisition techniques featu-ring wide azimuths,wide frequency bands,and high densities.关键词
方位各向异性/裂缝反演/VVAZ/Ruger近似/傅立叶级数Key words
azimuthal anisotropy/fracture inversion/VVAZ/Ruger's approximation/Fourier series分类
天文与地球科学引用本文复制引用
梁志强,李弘..不同方位各向异性反演技术对比和总结[J].物探与化探,2024,48(2):443-450,8.基金项目
国家自然科学基金项目"海相深层油气富集机理与关键工程技术基础研究"(U19B6003) （U19B6003）
