长江大学学报（自然科学版）2026，Vol.23Issue(1)：86-96,11.
基于三维地质建模的四维地应力研究
Four-dimensional in-situ stress study based on three-dimensional geological modeling
摘要
Abstract
Addressing issues such as lost circulation,overflow,and wellbore collapse encountered in marine sedimentary strata affected by diapirism,a reservoir structural model was established based on geological data from oil and gas fields.Combined with drilled well logging data,in-situ stress,formation pressure,and other data,a three-dimensional geomechanical model was constructed using Petrel software.Based on this,a four-dimensional in-situ stress model was further developed to analyze the variation of in-situ stress with the years of production.The research results indicate that:(1)the three-dimensional in-situ stress model has a high degree of consistency with single-well in-situ stress data,with a maximum error of 5.07%,demonstrating good accuracy;(2)after 15 years of oil and gas production,the maximum horizontal main in-situ stress decreased by 38.73～38.95 MPa,and the minimum horizontal main in-situ stress decreased by 43.58～43.8 MPa;(3)as production time increases,the formation pore pressure gradually decreases,and the limit collapse pressure differential of horizontal wells in the study area decreases accordingly.By 2026～2027,the limit pressure differential will equal the allocated production pressure differential,leading to wellbore collapse.Through four-dimensional in-situ stress field simulation technology,the study achieved prediction of the full-life production cycle of horizontal wellbore,providing an important basis for sand control design and safe production in areas affected by diapirism.关键词
底辟带/泥页岩/三维地应力模型/四维地应力场/井壁稳定Key words
basement-involved faulting/mudstone/three-dimensional in-situ stress model/four-dimensional in-situ stress field/wellbore stability分类
能源科技引用本文复制引用
幸雪松,杨玉贵,张天玮,楼一珊,祁文莉,吴惠梅..基于三维地质建模的四维地应力研究[J].长江大学学报（自然科学版）,2026,23(1):86-96,11.基金项目
页岩油气富集机理与高效开发国家重点实验室开放基金项目"钻井液循环条件下页岩油储层坍塌与失稳机理"(35800000-22-ZC0609-0018). （35800000-22-ZC0609-0018）
