| 内蒙古银额盆地西部路井凹陷油气地球化学特征
与油气源 |
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| 引用本文： | 魏仙样,卢进才,魏建设.内蒙古银额盆地西部路井凹陷油气地球化学特征
与油气源[J].地质通报,2013,32(10):1665-1672. |
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| 作者姓名： | 魏仙样 卢进才 魏建设 |
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| 作者单位： | 中国地质调查局西安地质调查中心，陕西 西安 710054 |
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| 摘 要： | 通过对银额盆地西部路井凹陷华力西晚期侵入岩、侏罗系、白垩系等不同层系所获原油的族组分、全油同位素、原油生物标记化合物、原油伴生气组分、同位素地球化学特征的分析，探讨了不同层系原油的生油母质类型、沉积环境和生烃母质的演化程度。对上石炭统—下二叠统干泉组、侏罗系、白垩系烃源岩沉积环境进行分析，并与上石炭统—下二叠统干泉组生物标志化合物的对比，认为路井凹陷不同层段所获得的原油与上石炭统—下二叠统干泉组烃源岩具有良好的亲缘关系，原油地球化学特征及生物标志化合物差异的原因是不同位置干泉组上段与下段烃源岩的贡献不同。
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| 关 键 词： | 银额盆地 路井凹陷 油气源 石炭系—二叠系 烃源岩 |
Petroleum geochemistry and oil and gas sources of the Lujing depression in western Yin'e basin,Inner Mongolia |
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| WEI Xian-yang,LU Jin-cai,WEI Jian-she.Petroleum geochemistry and oil and gas sources of the Lujing depression in western Yin''e basin,Inner Mongolia[J].Geologcal Bulletin OF China,2013,32(10):1665-1672. |
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| Authors: | WEI Xian-yang LU Jin-cai WEI Jian-she |
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| Abstract: | Based on analyzing the geochemical characteristics of group composition, bulk oil isotopes, crude oil biomarkers, and components and isotopes of associated gas of crude oil, this paper discusses the types of source materials, sedimentary environments of crude oil in different strata, and evolution degree of hydrocarbon generation material of Late Variscan intrusive rock and Jurassic and Cretaceous hydrocarbon rock in Lujing depression of western Yin'e basin. An analysis of the environment of Upper Carboniferous-Lower Permian source rocks, the Jurassic and Cretaceous hydrocarbon rocks and the contrast of the biomarker of the oil with that of the Upper Carboniferous-Lower Permian Ganquan Formation show that the crude oil of different strata from Lujing depression has a close relationship with the source rocks in the Ganquan Formation. The difference of the geochemical characteristics and biomarkers of the crude oil might be mainly caused by the different contributions of the lower and upper parts of the Ganquan Formation. |
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| Keywords: | Yin'e basin Lujing depression source of oil and gas Carboniferous-Permian |
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