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
出处
《新疆石油地质》
CAS
CSCD
北大核心
2005年第2期158-161,共4页
Xinjiang Petroleum Geology
