SEQUENCE STRATIGRAPHY AND RESERVOIR PREDICTION OF UPPER PALEOZOIC IN ORDOS BASIN

Zhai Aijun; Deng Hongwen; Deng Zuyou

doi:10.11743/ogg19990415

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SEQUENCE STRATIGRAPHY AND RESERVOIR PREDICTION OF UPPER PALEOZOIC IN ORDOS BASIN
Vol. 20, Issue 4, Pages: 336-340(1999)
Online First：25 December 1999，

Published：1999
DOI： 10.11743/ogg19990415
稿件说明：

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DOI：

Zhai Aijun, Deng Hongwen, Deng Zuyou. SEQUENCE STRATIGRAPHY AND RESERVOIR PREDICTION OF UPPER PALEOZOIC IN ORDOS BASIN[J]. 1999, 20(4): 336-340. DOI： 10.11743/ogg19990415.

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MSC1、MSC2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MSC1、MSC2、MSC3三个旋回中均有分布

有利储层分布区为伊24-鄂9-伊14井区、伊三-伊6-伊13井区、伊15-召探1井区和伊9井区

起鸡哈浪-塔巴庙-陕196井区为最有利含气探区。

Abstract

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 to form. 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.