泌阳凹陷南部核三段高分辨层序地层分析

Analysis on high-resolution sequence strata in the third member of Hetaoyuan Formation in the south of Biyang Depression

根据高分辨层序地层学原理,在泌阳凹陷南部核三段识别出了两个长期和4个中期旋回,并对工区内长中短期基准面旋回和结构特征及分布进行了详细的描述。在高分辨层序地层划分对比的基础上,建立了泌阳凹陷南部核三段高分辨等时地层格架,分析了沉积演化过程和生储盖组合规律。

Two long cycles and four middle cycles are identified in the third member of Hetaoyuan Formation in the south of Biyang Depression based on the theory of high-resolution sequence strata. The long, middle and short base level cycles and their structural features and distributions are described in details. Based on the high-resolution sequence stratigraphic division and correlation, the isochronous stratigraphic framework of the third member of Hetaoyuan Formation in the south of Biyang Depression is established, and the deposition evolutionary process and the pattern of source-reservoir-cap rock association are analyzed.