| 鄂尔多斯盆地西南缘延安组层序地层分析 |
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| 引用本文： | 丁晓琪,张哨楠.鄂尔多斯盆地西南缘延安组层序地层分析[J].成都理工大学学报(自然科学版),2008,35(6). |
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| 作者姓名： | 丁晓琪 张哨楠 |
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| 作者单位： | 成都理工大学"油气藏地质及开发工程"国家重点实验室,成都,610059;成都理工大学"油气藏地质及开发工程"国家重点实验室,成都,610059 |
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| 摘 要： | 通过钻井资料、岩心资料、测井曲线、薄片鉴定等分析手段,认为鄂尔多斯西南缘延安组经历了下切河谷充填-三角洲平原-河流沉积的演化,为一个完整的湖侵-湖退旋回.低位体系域主要由下切河谷充填砂岩构成,砂岩的分布受前侏罗纪古地貌的控制;水进体系域为三角洲平原沉积,最大湖泛面位于湖侵的黑色泥岩与煤线的互层中;高位体系域由三角洲平原及河流组成.低位体系域的下切河谷充填砂岩具有砂体厚、储集物性好、离烃源岩近、圈闭类型丰富等成藏条件,利于油气的捕集,其斜坡古地貌是今后勘探的重要区域.
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| 关 键 词： | 延安组 层序 下切河谷 体系域 |
Sequence stratigraphy analysis of Yan'an Formation in the southwest of Ordos Basin,China |
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| DING Xiao-qi,ZHANG Shao-nan.Sequence stratigraphy analysis of Yan'an Formation in the southwest of Ordos Basin,China[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2008,35(6). |
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| Authors: | DING Xiao-qi ZHANG Shao-nan |
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| Institution: | DING Xiao-qi,ZHANG Shao-nan State Key Laboratory of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu 610059,China |
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| Abstract: | The Yan'an Formation of Jurassic System in the southwest of Ordos Basin has a great potential for oil and gas exploration,and there is industrial petroleum in many wells.The Yan'an Formation experienced the evolvement from incised valley filling,delta plain to meandering river,and is a whole transgression and regression cycle.The low system tract is composed of filling sandstones of incised valley,and the pre-Jurassic palaeogeomorphology controlls the distribution of sandstone.The transgressive system tract... |
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| Keywords: | Yan\'an Formation sequence incised valley system tracts |
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