大庆石油地质与开发2026，Vol.45Issue(4)：20-28,9.DOI:10.19597/J.ISSN.1000-3754.202501036
川中地区蓬莱构造JT1井区茅口组储层发育特征及主控因素
Reservoir development characteristics and main controlling factors of Maokou Formation in JT1 well block of Penglai structure in central Sichuan Basin
摘要
Abstract
In order to further clarify the heterogeneity of Maokou Formation reservoir in JT1 well block of Penglai structure in central Sichuan Basin,based on core,physical properties,reservoir spatial characteristics and geo-chemical data,reservoir development characteristics and main controlling factors of Maokou Formation are ana-lyzed.The results show that Maokou Formation reservoir of JT1 well block develops 5 lithologies,including crystal-line dolomite,granular dolomite,crystalline limestone,granular limestone and biogenic skeleton limestone.Among them,crystalline dolomite,granular dolomite and granular limestone are the main reservoir rock types.Reservoir spaces include pores,caves and fractures,forming 3 types of reservoirs:pore type,fracture-vug type and fracture-pore type,with fracture-vug type being dominant,followed by fracture-pore type.The development of Maokou For-mation reservoir is mainly controlled by sedimentation,diagenesis and tectonic effect.The platform-margin shoals and intra-platform shoals developed in studied area have laid the material foundation for the development of high-quality reservoirs.The penecontemporaneous dolomitization,burial dolomitization and dissolution that occur during diagenetic processes all play a constructive role in reservoir development.Faults and fractures formed by tectonic ef-fect provide sites and channels for various dissolution and hydrothermal dolomitization processes.The research pro-vides theoretical guidance for hydrocarbon exploration in Maokou Formation of central Sichuan Basin.关键词
蓬莱构造/JT1井区/茅口组/储层特征/主控因素/川中地区Key words
Penglai structure/JT1 well block/Maokou Formation/reservoir characteristics/main controlling fac-tors/central Sichuan Basin分类
能源科技引用本文复制引用
李祖兵,唐松,马梓珂,李顺,赵青,尹龙燕,彭秋,李忠秋,乔泽旭..川中地区蓬莱构造JT1井区茅口组储层发育特征及主控因素[J].大庆石油地质与开发,2026,45(4):20-28,9.基金项目
中国石油天然气股份有限公司创新基金项目"深部优质火山岩储层成因机理研究"(2013D-5006-0104) （2013D-5006-0104）
重庆科技大学与西南油气田公司川中油气矿校企合作项目"川中地区茅口组沉积相特征研究"(XNS川中矿JS2023-151). （XNS川中矿JS2023-151）
