摘要
为搞清塔里木盆地油气富集规律和油气富集区分布情况,利用油气输导和二次运移的基本原理,结合该盆地构造和地层的具体特征,提出了适合该区的一种油气输导和富集研究新模式。通过层序地层对比,将该盆地志留—泥盆系划分为10个三级层序,在地层和构造综合研究的基础上,提出了塔里木盆地台盆区存在"后前陆挤压断裂带"的观点,并认为此断裂带具有较好的油气输导能力;进而认为该区油气输导的途径主要为不整合面和"后前陆挤压断裂带"。最后得出结论:在满加尔坳陷南部、北部和阿瓦提坳陷南部等3处存在着油气聚集区域。
In order to understand the patterns of hydrocarbon enrichment and the distribution of hydrocarbon accumulations,a new research model of hydrocarbon transportation and enrichment applicable in the study area is developed based on the basic principles of hydrocarbon transportation and secondary migration and in combination with the unique structural and stratigraphic features of the Tarim basin.Ten third-order sequences are recognized in the Silurian-Devonian of the Tarim basin through sequence stratigraphic correlation.Based on a comprehensive study of the stratigraphy and structure,it is believed that a 'post-foreland compressional fault belt' with relatively high conductivity potential occurs in the platform-basin area and act in combination with unconformities as the major carriers of hydrocarbon migration.It is concluded that hydrocarbon accumulations exist in the southern and northern parts of the Mangar depression and the southern part of the Awati depression.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2008年第6期23-26,共4页
Natural Gas Industry
基金
中国石化西部指挥部重点勘探项目“塔里木盆地构造、储层与油气成藏特征研究”子课题“塔里木盆地志留-泥盆系沉积、储层与层序地层特征研究”(项目编号:XBKY04-44-03)的部分研究成果
关键词
塔里木盆地
志留纪
泥盆纪
油气
输导
二次运移
隐蔽油气藏
Tarim basin,Silurian,Devonian,hydrocarbon,transportation,secondary migration,subtle reservoir
