| 川中地区上三叠统须家河组气源分析 |
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| 引用本文： | 唐跃,王靓靓,崔泽宏.川中地区上三叠统须家河组气源分析[J].地质通报,2011,30(10):1608-1613. |
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| 作者姓名： | 唐跃 王靓靓 崔泽宏 |
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| 作者单位： | 1. 中国地质调查局发展研究中心,北京,100037
2. 中国石油勘探开发研究院,北京,100083 |
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| 摘 要： | 通过对川中与川西北主要气田的天然气组分、天然气运移指标等资料的详细分析,发现川中地区须家河组天然气主要来自内部的次级生烃洼陷,其中须家河组二、四、六段气源分别为一、三、五段烃源岩,且不同含气层段之间很少有气源窜通的现象。最后指出即使生气强度小于20×108m3/km2,但只要紧邻生气洼陷,储层物性就相对较好,又有良好的构造背景,也能形成大中型气田。
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| 关 键 词： | 川中地区 须家河组 天然气组分 天然气运移 气源 |
An analysis of the gas source in the Upper Triassic Xujiahe Formation, central Sichuan Basin |
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| TANG Yue,WANG Liang-liang,CUI Ze-hong.An analysis of the gas source in the Upper Triassic Xujiahe Formation, central Sichuan Basin[J].Geologcal Bulletin OF China,2011,30(10):1608-1613. |
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| Authors: | TANG Yue WANG Liang-liang CUI Ze-hong |
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| Institution: | 1. Development Research Center of China Geological Survey, Beijing 100037, China;
2. Research Institute of Petroleum Exploration & Development, Beijing 100083, China |
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| Abstract: | An intensive analysis of the characteristics of main gas fields in central and northwest Sichuan basin such as the components and migration indicators of natural gas shows that natural gas of Xujiahe Formation in central Sichuan basin was mainly generated from source beds in the hydrocarbon generation sags,and the natural gas of T3x2, T3x4, T3x6 was respectively generated from hydrocarbon source rocks of T3x1, T3x3, T3x5. It is pointed out that even if the gas generation intensity of hydrocarbon source rocks in the hydrocarbon generation sag is lower than 20×108m3/km2,the reservoir which has good physical properties and beneficial tectonic background and is close to the hydrocarbon generation sag could also form a large or medium sized gas field. |
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| Keywords: | central Sichuan Basin Xujiahe Formation natural gas components content natural gas migration gas source |
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