| 内蒙古突泉盆地突参1井原油地球化学特征与油源分析 |
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| 引用本文： | 李世臻,周新桂,王丹丹,林燕华,张文浩.内蒙古突泉盆地突参1井原油地球化学特征与油源分析[J].地质通报,2015,34(10):1946-1951. |
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| 作者姓名： | 李世臻 周新桂 王丹丹 林燕华 张文浩 |
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| 作者单位： | 中国地质调查局油气资源调查中心，北京 100029 |
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| 基金项目： | 中国地质调查局项目（编号：1211302108019-2） |
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| 摘 要： | 在内蒙古突泉盆地牤牛海坳陷南部突参1井的1684.5~1698.2m深度段侏罗系万宝组发现轻质原油,揭示了该区较好的油气勘探新领域。对该井原油和主要烃源岩分子地球化学特征、族组分稳定C同位素等进行了分析认为,该原油为轻质高蜡原油,C31升藿烷、C29甾烷异构化等成熟度参数显示该原油为成熟原油。正构烷烃呈单峰前峰型,姥鲛烷较植烷占绝对优势(Pr/Ph2.5),C29规则甾烷含量远高于C27甾烷,伽马蜡烷含量低,表明该原油生烃母质形成于以陆源高等植物为主的偏氧化沉积环境,原油来自该区侏罗系万宝组煤系泥岩。
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| 关 键 词： | 突泉盆地 突参1井 地球化学特征 油源对比 |
Geochemical characteristics of crude oil and oil-source correlation of Well Tucan 1, Tuquan Basin, Inner Mongolia |
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| LI Shizhen,ZHOU Xingui,WANG Dandan,LIN Yanhu,ZHANG Wenhao.Geochemical characteristics of crude oil and oil-source correlation of Well Tucan 1, Tuquan Basin, Inner Mongolia[J].Geologcal Bulletin OF China,2015,34(10):1946-1951. |
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| Authors: | LI Shizhen ZHOU Xingui WANG Dandan LIN Yanhu ZHANG Wenhao |
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| Institution: | Oil and Gas Resources Survey Center of China Geological Survey, Beijing 100029, China |
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| Abstract: | Light crude oil was found at the depths of 1684.5~1698.2m of the Middle Jurassic Wanbao Formation in Well Tucan 1, which was deployed in the southern part of Mangniuhai depression in Tuquan Basin. The oil discovery reveals a better new field of oil and gas exploration in the area. The molecular geochemical characteristics and stable carbon isotopic group components of the crude oil and the main hydrocarbon source rocks were analyzed in the paper. The crude oil is light and high wax oil. The maturity parameters of C31-hopane and C29-sterane isomerization show that the crude oil is a mature crude oil. N-alkanes occur as single and front peak type. Pristines occupy absolute advantage compared with phytane (Pr/Ph>2.5). The content of C29-sterane is much higher than C27-sterane. The content of gammacerane is low. These features indicate that the oil organic matter was mainly derived from terrestrial higher plant in a partially oxidized sedimentary environment. The crude oil came from the coal shale of Jurassic Wanbao Formation. |
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| Keywords: | Tuquan Basin Well Tucan 1 geochemistry oil-source correlation |
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