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通过以基准面旋回为参照格架的层序地层研究，将鄂尔多斯盆地上古生界划分为3个中期地层旋回和11个短期地层旋回，中期地层旋回自上而下为MSCI、MSCZ和MSC3，分别对应于石盒子组、山西组和本溪、太原组。在研究区目的层段识别出最三角洲、陆表海、三角洲、冲积扇和河流沉积体系，早期层序地层的发育具准平原基础上形成陆表海的沉积特征，二叠纪时海水退出，方开始了陆相盆地的发育阶段。预测认为，储层在MSCI、MSfZ、MSC3三个旋回中均有分布，有利储层分布区为伊24一鄂9一伊14井区、伊三一伊6一伊13井区、伊15一召探1井区和伊9井区，起鸡哈浪一塔巴庙一陕1％井区为最有利含气探区。
Through the study of sequence stratigraphy with datum cycle as the reference frame, the Upper Paleozoic in the Ordos Basin is divided into three medium-term stratigraphic cycles and 11 short-term stratigraphic cycles. The medium-term stratigraphic cycles are MSCI, MSCZ and MSC3 Corresponding to Shi box subgroup, Shanxi group and Benxi, Taiyuan group. The most deltaic, land surface sea, delta, alluvial fan and fluvial sedimentary system were identified in the target interval of the study area. The sedimentary characteristics of early stage sequence stratigraphy were formed on the basis of quasi-plains, and the seawater exited during Permian, Phase of basin development. It is predicted that the reservoirs are distributed in the three cycles of MSCI, MSfZ and MSC3, and the favorable reservoir area is YI-24-YI-9-YI-14 and YI-Yi-6-YI- Well 1 wells and Iraq 9 well area, starting from the chicken Ha Long a Taba Temple 1% well area for the most favorable gas exploration area.