海相油气地质2025，Vol.30Issue(1)：82-88,7.DOI:10.3969/j.issn.1672-9854.2025.01.007
韧性基底黏度对断裂构造影响的数值模拟研究
Numerical simulation study on the influence of ductile basement viscosity on fault structures
摘要
Abstract
Rifted basins are rich in oil and gas resources,and play an important role in petroleum industry.This thesis,which focuses on the influencing factors of structure styles of a sedimentary cover,can provide more theoretical basis for oil and gas exploration and development in rifted basins.Many researchers have been studying the influencing factors such as geometric conditions of the basin boundary,pre-existing faults in the basement,basement properties(ductile or rigid),extension rate,syndeposition and so on.However,fewer study have been carried out on the influence of viscosity of ductile basements on structure styles of a sedimentary cover.In this study,the effects of viscosity of ductile basements on the structure styles of a sedimentary cover are systematically investigated by using discrete element modeling.Model results show that in models with different viscosity of ductile basements,the morphology of basins is similar,all are homogeneously extended.The fault distance of different models is not much different.The center of settlement is always in the middle and does not migrate during extension.The greater the viscosity of the ductile substrate,the greater the number of faults generated.According to the experimental simulation results and the profile characteristics of Changchang Sag in Qiongdongnan Basin,when the terrestrial heat flow value is large,the basement viscosity is small and the number of faults generated is small;conversely,when the terrestrial heat flow value is small,the basement viscosity is large and the number of faults generated is large.关键词
离散元/韧性基底黏度/构造样式/凹陷/断陷盆地Key words
discrete element method/viscosity of ductile basement/structural style/sag/rifted basin分类
地质学引用本文复制引用
孙倩倩,张恒,张璐,唐明,张坤坤..韧性基底黏度对断裂构造影响的数值模拟研究[J].海相油气地质,2025,30(1):82-88,7.基金项目
本文受中海石油(中国)有限公司重大专项"南海西部油田上产2000万方关键技术研究"(编号:CNOOC-KJ135 ZDXM 38 ZJ 01 ZJ)与中国海洋石油集团有限公司综合科研项目"中国海油测井解释软件系统研发与国产化替代(Ⅰ期)"(编号:KJZH-2024-1903)联合资助 （中国）
