| 青藏高原乌丽冻土区二叠纪煤系烃源岩特征 |
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| 引用本文： | 李小豫,龚建明,陈小慧,王慧东,陈俊文,杨志承,蒋玉波.青藏高原乌丽冻土区二叠纪煤系烃源岩特征[J].现代地质,2013,27(6):1384. |
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| 作者姓名： | 李小豫 龚建明 陈小慧 王慧东 陈俊文 杨志承 蒋玉波 |
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| 作者单位： | 青海煤炭地质勘查院，青海 西宁 810001 |
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| 基金项目： | 国家自然科学基金项目(41273066)；青海省治多县乌丽地区天然气水合物调查项目。 |
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| 摘 要： | 为了查明青藏高原乌丽冻土区二叠纪煤系烃源岩的生烃潜力，对采集自乌丽水合物试验孔ZK1井及其周边钻孔的岩心样品和露头样品进行了测试。测试结果显示:上二叠统那益雄组上段烃源岩有机质丰度较低，而下段烃源岩有机质丰度较高；烃源岩有机质类型主要为Ⅲ型；烃源岩热演化程度很高，已达过成熟。考虑到泥质烃源岩成熟度很高以及该区存在变质程度很高的煤层，综合研究认为，该区二叠纪煤系烃源岩生烃潜力总体较好。
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| 关 键 词： | 烃源岩 二叠系 乌丽冻土区 青藏高原 |
Source Rock Potential of Permian in Wuli Permafrost Zone in Qinghai Tibetan Plateau |
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| LI Xiao yu,GONG Jian ming,CHEN Xiao hui,WANG Hui dong.Source Rock Potential of Permian in Wuli Permafrost Zone in Qinghai Tibetan Plateau[J].Geoscience——Journal of Graduate School,China University of Geosciences,2013,27(6):1384. |
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| Authors: | LI Xiao yu GONG Jian ming CHEN Xiao hui WANG Hui dong |
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| Institution: | Qinghai Coal Geological Exploration Institute, Xining，Qinghai810001,China |
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| Abstract: | In order to find out the hydrocarbon generating potential of Permian source rocks in Wuli permafrost zone, Qinghai Tibetan Plateau, the cores from gas hydrate trial hole (ZK1) and its adjacent drilling holes were analyzed. The results show that the organic matter abundance of upper member source rocks of Nayixiong Formation in Upper Permian is poor, while the abundance of the lower member is fair to good. The organic type is mainly constituted by Ⅲ kerogen, which is in favor of generating gas. The thermal evolution degree of Permian source rocks is very high, reaching to excessive maturity. Considering that the maturity of mudstone and metamorphic grade of coal bed are very high in Wuli Permafrost zone, it can be drawn a conclusion that the hydrocarbon generating potential of Permian source rocks is general good in Wuli permafrost zone,Qinghai Tibetan Plateau. |
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| Keywords: | source rock Permian Wuli permafrost zone Qinghai Tibetan Plateau |
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