江汉盆地东部新下段层序地层格架与油气成藏  

Relationship between the Sequence Stratigraphy Framework and Petroleum Accumulation in Lower Member of Xingouzui Formation,Eastern Jianghan Basin

作　　者：胡涛[1] 陈素[1] 

机构地区：[1]中国石化江汉油田分公司勘探开发研究院,湖北潜江433124

出　　处：《新疆石油地质》2005年第2期158-161,共4页Xinjiang Petroleum Geology

摘　　要：新沟嘴组下段是江汉盆地东部的主要勘探目的层,主要由1个三级层序(SⅢ1)组成。油气成藏地质要素和油气储量、成藏类型在层序地层格架中有一定的分布规律。烃源岩在SⅢ1的湖侵体系域最发育;储集层主要分布于三级层序的低位体系域;SⅢ1既有区域性盖层又有局部性盖层,垂向上构成4种生储盖组合类型。已探明的油气储量主要分布于SⅢ1的低位体系域,其次分布于湖侵体系域。SⅢ1各体系域因成藏条件的差异而具有不同的成藏类型。The lower member of Xingouzui formation is the major exploration target stratum in eastern Jianghan basin, and mainly consists of one 3-order sequence (SⅢ1). The pool-forming geological elements, reserves and reservoir types distribute in the sequence stratigraphic framework. Source rocks are found mostly in transgressive system tract (TST) of S Ⅲ1 whilst sandstone reservoirs occurs in lowstand system tract (LST) of it. There are regional sealing and partial sealing in SⅢ1,which vertically formed three types of source-reservoir-cap rock combinations. The proved reserves primarily distribute in the LST, secondly in the TST. Each system tract of SⅢ1 has different pool-forming types for differences in reservoir conditions

关 键 词：层序地层格架 江汉盆地 体系域 油气成藏 三级层序 盖层 成藏条件 地质要素 新沟嘴组 储集层 

分 类 号：TE122[石油与天然气工程—油气勘探] P618[天文地球—矿床学]