塔里木盆地奥陶纪地层中Kukersite型生油岩的发现及其石油地质意义
查看参考文献42篇
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文摘
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下古生界奥陶系Gloeocapsomorpha prisca (G. prisca)富集的Kukersite型烃源岩在全球范围内是一套重要的油气源岩，所以塔里木盆地中-上奥陶统主力烃源层中是否发育Kukersite型烃源岩在油气勘探中备受关注.研究通过中等成熟度灰泥丘相沉积源岩干酪根裂解-色谱-质谱分析，揭示了塔里木盆地奥陶纪地层中存在典型Kukersite型烃源岩，裂解产物表现为低含量>n-C_(19)链烃，在n-C_(13)~n-C_(17)之间存在明显奇偶优势；以正构长链烷基取代异构体为主的烷基苯系列和烷基噻吩系列；以及特征性的5-正烷基-1,3-苯二酚及其同系物分布等.根据G. prisca繁育的地理环境特征，并结合目前已经揭示的塔里木盆地下古生界含油气系统原油特征和典型中-上奥陶统烃源岩干酪根裂解产物组成特征，提出塔里木盆地中-上奥陶统主力烃源层中大规模发育G. prisca富集的Kukersite型烃源岩的可能性较小，而主要发育以宏观底栖藻或浮游藻类为主的烃源岩. |
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来源
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科学通报
,2014,59(1):72-79 【核心库】
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关键词
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塔里木盆地
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Kukersite型生油岩
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奥陶系
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干酪根
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Gloeocapsomorpha prisca
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地址
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1.
中国科学院广州地球化学研究所, 有机地球化学国家重点实验室, 广州, 510640
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国石油大学(北京)地球科学系, 北京, 102200
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0023-074X |
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基金
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国土资源部国家油气专项资助
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国家自然科学基金
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文献收藏号
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CSCD:5061343
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