| 鄂尔多斯盆地北部苏里格庙含油气区上古生界层序地层研究 |
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| 引用本文：沈玉林,郭英海,李壮福,孙粉锦.2007.鄂尔多斯盆地北部苏里格庙含油气区上古生界层序地层研究[J].地球学报,28(1):72-78. |
| DOI：10.3975/cagsb.2007.01.11 |
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| 中文摘要:在区域构造变动、岩性组合、沉积相构成、测井曲线特征等研究基础上,利用层序地层学原理,对苏里格庙地区上古生界层序地层进行了研究.将在苏里格庙含油气区上古生界划分出5个层序组,并在晋祠组到石盒子组中划分出14个三级沉积层序,分别发育于陆表海、三角洲、河流3种沉积背景之下.建立层序地层格架,以体系域为单位探讨了层序地层格架内主要含气层段-层序8、9的砂体展布规律.研究表明,以体系域为单位编制的砂体等值线图,更细致地刻画了砂体的展布,砂质储集体的发育和空间展布受控于沉积环境,主要发育在低位体系域中. |
| 中文关键词:层序地层 砂体 上古生界 苏里格庙 鄂尔多斯盆地 |
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| Sequence Stratigraphy Study of the Upper Paleozoic of the Suligemiao Oil and Gas-bearing Area, North Ordos Basin |
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| Abstract:Based on the study of the tectonic evolution, the assemblage of vertical lithology, the character of logs, and the theory of sequence stratigraphy, the sequence stratigraphy in upper Paleozoic of Suligemiao oil and gas-bearing is studied in this paper. Divide the upper Paleozoic into 5 sequence sets, and Jinci to Shihezi Formation is subdivided into 14 sequences, which formed in epicontinental sea, deltaic and fluvial sedimentary environments. The sequence stratigraphy framework of this area has been set up. The map of sandbody distribution is drawn according to system tract. The development and distribution of the sandbody are discussed in the lowstand system tract of sequence 8 and 9. By the sandstone mapping in the unit of system tract, the distribution of sandstone is shown distinctly. The formation and distribution of sand reservoir is controlled by the sedimentary environment, which is gathered in the lowstand systems tract. |
| keywords:sequence stratigraphy sandbody Upper Paleozoic Suligemiao Ordos basin |
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