鄂西-渝东区石炭系油气成藏模式及富集规律  

Types of gas pool formation and accumulation in the Carboniferous in western Hubei-eastern Chongqing

作　　者：严金泉[1] 孙卫[1] 

机构地区：[1]西北大学地质学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2001年第5期415-417,共3页Journal of Northwest University（Natural Science Edition）

摘　　要：从圈闭形成与演化的角度探讨油气运移和圈闭形成的配置关系 ,从而进一步研究油气的成藏模式与富集规律。认为 :鄂西 -渝东区石炭系由于基底结构的差异性和构造运动的多期性 ,形成了 4种基本的圈闭类型 ;后期构造的改造和油气的多期运聚 ,形成了 3种不同类型的成藏模式。提出有利的储层发育区和继承性的大型古隆起区 。The formation of hydrocarbon pool is largely related to the hydrocarbon migration and traping, their interactions formed different gas pools and accumulation pattern. In view of the formation and evolution of traps, the configuration of hydrocarbon migration and trap formation are studied in order to find out the gas pools and accumulation pattern. It is suggested that four major types of trap structures occurring in the Carboniferous were resulted from the basement structures and multiple episodic tectonic movement. Three types of gas pools were formed due to the later structural modification and multiple migration and accumulation of hydrocarbons. Favourable reservoir zones are therefore predicted based on the above factors. Large scale, and successful uplift blocks are the suggested as the quite potential areas to find the large gasfield.

关 键 词：石炭系 区域构造 圈闭 油气藏 成藏模式 鄂西-渝东区 富集规律 油气运移 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]