物探化探计算技术2024，Vol.46Issue(4)：377-385,9.DOI:10.3969/j.issn.1001-1749.2024.04.01
基于各向异性理论的地应力地震预测技术研究
Stress seismic prediction based on anisotropic equivalent medium theory
摘要
Abstract
With the technological development of unconventional oil and gas exploration and development,especially the need for efficient shale oil and gas extraction,accurate stress prediction is crucial for designing shale horizontal well trajectories and selecting favorable fracturing areas.In order to obtain the stress magnitude and direction,firstly,we should get the elastic parameters and fracture rock physics parameters;we carry out the high-precision pre-stack AVAZ inversion using wide-azi-muthal seismic data based on the anisotropic equivalent medium theory and then driven by the anisotropic rock physical model of shale.Secondly,combined with the stress prediction model,we realize the quantitative prediction that includes the magni-tude and direction of the stress.The theoretical model test and practical data application show that this stress prediction meth-od has high accuracy,the results of stress prediction conform to the geological rule,and have good consistency with the results of micro-seismic fracturing monitoring and log data.It can effectively guide the shale horizontal well trajectory design and frac-turing scheme deployment.关键词
页岩油气/地应力/各向异性/AVAZ反演/水平应力差异系数/应力方向Key words
shale oil and gas/stress/anisotropy/AVAZ inversion/different horizontal stress coefficient/stress di-rection分类
天文与地球科学引用本文复制引用
许凯,张广智,孙振涛,王世星,苏凌,杨骞..基于各向异性理论的地应力地震预测技术研究[J].物探化探计算技术,2024,46(4):377-385,9.基金项目
国家自然科学基金企业创新发展联合基金项目(U19B6003) （U19B6003）
中国石化十条龙课题(P21078-4) （P21078-4）
中国石化科技攻关项目(P22081,P22386) （P22081,P22386）
