川南福集向斜构造演化特征及其对页岩气成藏的控制作用  

The Evolutionary Characteristics of the South Sichuan Fuji Syncline Structure and Its Controlling Role in Shale Gas Reservoir Formation

作　　者：李沁咫 陈宣壁 李忠权[1] Li Qinzhi;Chen Xuanbi;Li Zhongquan(Chengdu University of Technology,Chengdu 610059)

机构地区：[1]成都理工大学,四川成都610059

出　　处：《石化技术》2025年第1期219-221,共3页Petrochemical Industry Technology

摘　　要：为探索川南福集向斜构造演化特征对页岩气成藏的控制作用,基于三维地震、断层相关褶皱理论、平衡剖面原理等,系统剖析该区构造特征、演化过程及构造对五峰-龙马溪组页岩气成藏的影响。研究认为:研究区页岩气成藏受多期构造运动影响:加里东—海西期为初始沉积埋藏期,主要沉积原生源储盖;印支-燕山期为主要成藏改造期,大量生烃且改造储层页岩气分布;喜山期为最终调整剥蚀期,挤压抬升剥蚀影响页岩气保存。To explore the controlling role of the evolutionary characteristics of the Fuxian syncline structure in the South Sichuan Basin on the formation of shale gas reservoirs,this study systematically analyzes the structural features,evolutionary processes,and the impact of the structure on the shale gas reservoirs of the Wufeng-Longmaxi Formation in the study area,based on 3D seismic data,fault-related fold theory,and the principle of balanced cross-sections.The study concludes that the formation of shale gas reservoirs in the study area is influenced by multiple phases of tectonic movements:The Caledonian-Hercynian period(Early Paleozoic to Late Paleozoic)is considered the initial deposition and burial phase,during which the primary source,reservoir,and cap rocks were deposited.The Indosinian-Yanshanian period(Late Triassic to Late Jurassic)is identified as the main reservoir formation and modification phase,characterized by significant hydrocarbon generation and the reshaping of shale gas distribution within the reservoir rocks.The Himalayan period(Cenozoic)is seen as thefinal adjustment and erosion phase,where compressional uplift and erosion have impacted the preservation of shale gas.

关 键 词：页岩气 构造变形 五峰-龙马溪组 页岩气藏差异富集 

分 类 号：P618.13[天文地球—矿床学]