摘要
阐述了四川盆地须家河组气藏的成藏特点,指出须家河组是在上扬子地台西缘海相碳酸盐岩台地基础上形成的一套含煤碎屑岩地层,由于其独特的生储盖组合,是四川盆地最具勘探潜力的层系之一。须家河组气藏纵向上发育了3套"三明治"式的成藏组合,岩性气藏、构造-岩性复合气藏为主要的存在形式,具有成藏组合多,含水饱和度高,气水关系复杂,气藏类型多样,受烃源、储层、古今构造及前陆盆地结构等多元叠合控制的特点。认为四川盆地须家河组成藏条件及其匹配总体较好,存在5个天然气有利富集区带,具有较好的勘探前景。
The reservoir-formimg characteristics of Xujiahe Formation in Sichuan Basin are stated in this paper,and also,it is pointed out that the formation is a set of coal- bearing clastic rack strata formed on the base of marine facies carmonate platform in the western margin of upper Yantz platform,it is one of the most prospective formations in Sichuan Basin due to the exclusive hydrocarbon generation,reservoir and cap association.Vertically,in the Xujiahe Formation gas reservoirs,three sets of sandwich-like reservoir-forming associations develop,which takes lithologic gas reservoir,structural-lithologic combination gas reservoir as the main existing way,and is of the characteristics of multiple reservoir-forming associations,high water saturation,complicated gas and water eolation,diverstified gas reservoir types,and controlled by hydrocarbon source,reservoirs,ancient and present structures and foreland basin texture.The research indicates the reservoir-forming conditions and the matching of Xujiahe Formation in Sichuan Basin are generally good.There exist five favorable gas accumulation areas with bright explorative prospect.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第6期40-44,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
须家河组
气藏
成藏特征
勘探前景
四川盆地
Xujiahe Formation
gas reservoir
reservoir-forming characteristics
exploration prospect
Sichuan Basin
