| 内蒙古西部额济纳旗祥探8井华力西期风化壳
原油地球化学特征 |
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| 引用本文： | 曹 洁,魏仙样,严小鳙,李玉宏,魏建设.内蒙古西部额济纳旗祥探8井华力西期风化壳
原油地球化学特征[J].地质通报,2012,31(10):1639-1644. |
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| 作者姓名： | 曹 洁 魏仙样 严小鳙 李玉宏 魏建设 |
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| 作者单位： | 1. 中国地质科学院矿产资源研究所，北京 100037；
2.中国地质调查局西安地质调查中心，陕西 西安 710054；
3. 中国石油大学(北京)地球科学学院，北京 102249 |
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| 摘 要： | 根据对祥探8井华力西末期风化壳原油地球化学特征的分析，原油具有饱和烃含量高，芳烃、非烃、沥青质含量低和全油C同位素轻的特点，生物标志化合物藿烷系列具有C30藿烷含量高，伽马蜡烷含量相对较高等特点，指示生烃母质类型好，沉积环境为高含盐的还原环境，烃源岩演化程度较高。与祥探9井烃源岩生物标志化合物特征一致，指示与石炭系烃源岩具有良好的亲缘关系。
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| 关 键 词： | 额济纳旗 祥探8井 华力西期风化壳 原油 地球化学特征 |
Geochemical characteristics of Variscan weathered crust crude oil of Xiangtan 8 well in Ejin Banner, western Inner Mongolia |
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| CAO Jie,WEI Xian-yang,YAN Xiao-yong,LI Yu-hong,WEI Jian-she.Geochemical characteristics of Variscan weathered crust crude oil of Xiangtan 8 well in Ejin Banner, western Inner Mongolia[J].Geologcal Bulletin OF China,2012,31(10):1639-1644. |
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| Authors: | CAO Jie WEI Xian-yang YAN Xiao-yong LI Yu-hong WEI Jian-she |
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| Abstract: | Based on an analysis of geochemical characteristics of Variscan weathered crust crude oil from Xiangtan 8 well, the authors hold that the crude oil bears the characteristics of high saturated hydrocarbon, low aromatic, no hydrocarbon and asphaltene, and light carbon isotope of the whole oil, and the hopanoid series of biomarkers bears the characteristics of high C30 hopanoid and relatively high gammacerane. All these features show that the kerogen type of hydrocarbon source rocks is good, the sedimentary environment is a reducing environment of high-salt, and the evolution degree of hydrocarbon source rocks is fairly high. The whole characteristics of biomarkers are consistent with the hydrocarbon source rocks of Xiangtan 9 well, suggesting a certain genetic relationship between the crude oil and the Carboniferous hydrocarbon source rocks. |
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| Keywords: | Ejin Banner Xiangtan 8 well Variscan weathered crust crude oil geochemical characteristics |
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