四川盆地东部开江地区石炭系构造演化与油气成藏关系分析

Carboniferous Tectonic Evolution and Hydrocarbon Accumulation Relationship Analysis of Kaijiang Area in Eastern Sichuan Basin

描述了开江地区总体构造特征,讨论了开江地区构造演化史。研究认为,开江地区构造演化主要经历了加里东期、海西期、印支期、燕山期以及喜山期等构造运动,结合开江地区石炭系气藏的生排烃史,将石炭系油气成藏模式分为印支期-燕山期聚集成藏模式、印支-燕山期聚集喜山期成藏模式和喜山期聚集成藏模式3种类型。

In this paper, it begins from the structural characteristics of Kaijiang area, describes the general structural characteristics of Kaijiang area, and then discusses the tectonic evolution history of Kaijiang area. The study shows, Kaijiang area mainly experienced the tectonic evolution of Caledonian, Hercynian, Indosinian, Yanshanian, Himalayan tectonic movement and so on. Combined with the hydrocarbon-generating and expulsion history of the Carboniferous gas reservoir in Kaijiang area, it divides the Carboniferous gas reservoir forming pattern into three types： Indo-Yanshanian-accumulation mode, Indo-Yanshanian gathered Himalayan accumulation mode, and Himalayan-accumulation mode.