鄂尔多斯盆地上古生界层序地层与储层预测  

SEQUENCE STRATIGRAPHY AND RESERVOIR PREDICTION OF UPPER PALEOZOIC IN ORDOS BASIN

作　　者：翟爱军[1] 邓宏文[1] 邓祖佑[1] 

机构地区：[1]中国地质大学能源系,北京100083

出　　处：《石油与天然气地质》1999年第4期336-340,共5页Oil & Gas Geology

摘　　要：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。Upper Paleozoic strata of Ordos Basin can be divided into three medium-term cycles and eleven short-termcycles based on base-level cycle. The three medium-term cycles, namely MSC1, MSC2, and MSC3 from top to bottom,correspond respectively with Shihezi, Shanxi, Benxi and Taiyuan Formations- Fan-delta, epicontinental sea, delta,allavial fan and river channel deposit systems are identified in the target sections of the study regions. The earier stratawere epicontinetal sea deposits formed on peneplain, when the seawater receded in Permian, nonmarin basin began toform. It is predicted that the reservoirs are distribute widely within the three cycles of MSC1, MSC2 and MSC3. Yi24-E9-Yil4, Yi22-Yi6-Yil3 and Yil5-Zhaotan 1 and Yi9 well areas are favourable regions for reservoir development,While QijihLang - Tabamiao- Shan 196 well areas are the most favorable regions for oil and gas prospecting.

关 键 词：鄂尔多斯盆地 上古生界 层序地层 油气勘探 

分 类 号：P618.130.2[天文地球—矿床学] P534.4[天文地球—地质学]