川中、川南过渡带须家河组储集砂体成因类型及特征

详细信息

The genetic types of the reservoir sandstones from the Xujiahe Formation in the central-southern Sichuan transitional zone

State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Chengdu University of Technology, Chengdu 610059, Sichuan, China

摘要: 川中、川南过渡带地区在晚三叠世须家河期湖盆演化的各阶段沉积了不同成因类型的碎屑岩储积砂体,以须家河组二段、四段和六段最为发育,其成因类型主要有三角洲平原分流河道砂体、三角洲前缘水下分流河道砂体、河口坝砂体、滨湖砂滩和浅湖砂坝砂体。通过野外剖面、岩芯、测井曲线以及样品的薄片鉴定和扫描电镜分析,对各成因类型砂体的分布特征进行了研究,进而对各类砂体的结构构造、物性特征进行了对比研究。
- 上三叠统 /
- 须家河组 /
- 储集砂体 /
- 川中、川南
Abstract: The clastic reservoir sandstones are developed in the central-southern Sichuan transitional zone, especially in the second, fourth and sixth members of the Late Triassic Xujiahe Formation. The genetic types of the reservoir sandstones consist of delta-plain distributary channel sandstones, delta front subaqueous distributary channel sandstones, river mouth bar sandstones, littoral lake beach and shallow lake bar sandstones. The distribution, textures and structures, and physical properties are examined in detail for the reservoir sandstones of varying origins.
- Upper Triassic /
- Xujiahe Formation /
- reservoir sandstone /
- central-southern Sichuan transitional zone