| 鄂尔多斯盆地上古生界气藏与深盆气藏成藏机理之辩析 |
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| 引用本文： | 李仲东,郝蜀民,惠宽洋,李良,过敏.鄂尔多斯盆地上古生界气藏与深盆气藏成藏机理之辩析[J].矿物岩石,2009,29(1). |
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| 作者姓名： | 李仲东 郝蜀民 惠宽洋 李良 过敏 |
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| 作者单位： | 1. 成都理工大学"油气藏地质及开发工程"国家重点实验室,四川,成都,610059
2. 中国石化集团公司华北分公司,河南,郑州,450006 |
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| 摘 要： | 通过对鄂尔多斯盆地上古生界气藏形成基本条件、气水分布规律和成藏动力学特征研究分析.并与北美典型深盆气进行对比发现,如果仅从气源丰富、储层致密、异常压力、大面积舍气等气藏表现特征观察,上古生界气藏与典型深盆气藏极为相似.但从各区气藏形成条件来看,上古生界烃源岩生气速率慢,持续地供气条件较差;气藏上倾方向多因物性或岩性封挡,主要表现为非均质储层条件下的岩性和构造一岩性气藏类型;舍气范围内的同一气层连通性较差,气水分布受区域构造控制,局部明显存在边底水,也没有整体活塞式气驱水作用形成的区域性气水界面.成藏动力学机理反映,上古生界储层毛细管阻力过大,天然气二次运移的浮力不够,主要是就近运移聚集成藏,没有大规模运移的迹象,难以实现整体活塞式气驱水运移.所以用深盆气藏成藏机理还不能合理解释鄂尔多斯盆地上古生界气藏成因.综合分析认为,持续供气能力不够、储层连通性差是造成上古生界气藏有别于深盆气藏的主要原因.
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| 关 键 词： | 鄂尔多斯盆地 上古生界 成藏特征 与深盆气藏对比 成藏机理 |
DISCUSSION ON RELATION OF GAS ACCUMULATION MECHANISM BETWEEN DEEP BASIN AND UPPER PALEOZOIC IN THE ORDOS BASIN |
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| LI Zhong-dong,HAO Shu-ming,XI Kuan-yang,LI Liang,GUO Min.DISCUSSION ON RELATION OF GAS ACCUMULATION MECHANISM BETWEEN DEEP BASIN AND UPPER PALEOZOIC IN THE ORDOS BASIN[J].Journal of Mineralogy and Petrology,2009,29(1). |
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| Authors: | LI Zhong-dong HAO Shu-ming XI Kuan-yang LI Liang GUO Min |
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| Institution: | LI Zhong-dong1,HAO Shu-ming2,XI Kuan-yang2,LI Liang2,GUO Min11.State Key Lab of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu 610059,China,2.Research Institute of North China Branch,SINOPEC,Zhengzhou 450006 |
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| Abstract: | The relation between gas accumulation of typical deep basin gas and Upper Paleozoic gas field in the Ordos basin was studied in detail on the basis of analysis of sandstone and shale compaction,evolution of porosity,mechanism of pressure formation,distribution of gas and water,gas migration and gas accumulation,as well as in combination with previous research.The characteristics of deep basin gas trap and Upper Paleozoic gas field were similar from the aspects of abundant accumulation,abnormal pressure,larg... |
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| Keywords: | Ordos basin Upper Paleozoic characteristics of accumulation correlation of deep basin gas with Upper Paleozoic gas accumulation accumulation mechanism |
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