| 冀中坳陷束鹿凹陷潜山原油地球化学特征与油源对比 |
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| 引用本文： | 王元杰,蔡川,肖阳,明锦,田然,任艺,朱张丽,张钰景,时聪.冀中坳陷束鹿凹陷潜山原油地球化学特征与油源对比[J].地球科学,2021,46(10):3629-3644. |
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| 作者姓名： | 王元杰 蔡川 肖阳 明锦 田然 任艺 朱张丽 张钰景 时聪 |
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| 作者单位： | 1.中国石油华北油田公司, 河北任丘 062552 |
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| 基金项目： | 中国石油天然气股份有限公司重大科技专项2017E-15华北油田公司校企合作项目HBYT-YJY-2018-JS-177 |
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| 摘 要： | 为了探究束鹿凹陷潜山油藏的油气来源，利用聚类分析方法对主要烃源岩进行了精细划分，并通过生物标志化合物和油-岩成熟度对比，实现了潜山油源的精细对比.结果表明，潜山原油的地球化学特征总体相似，来自同一套烃源岩.Es1x烃源岩有机质以藻类和浮游生物输入为主，沉积于咸水、强还原环境，处于未熟-低成熟阶段，而Es3x烃源岩有机质以浮游生物和高等植物混合输入为主，沉积于淡水-微咸水、弱氧化-弱还原环境，成熟度随深度增加而增大，可细分为A、B、C、D四种类型，其中D类是最好的类型.油源对比表明，潜山原油主要来源于Es3x烃源岩，其中斜坡潜山原油主要来源于洼槽边缘浅层低成熟Es3x烃源岩，而洼中隆潜山原油主要来源于洼槽中心深层高-过成熟Es3x烃源岩.
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| 关 键 词： | 生物标志化合物 油源对比 聚类分析 潜山油藏 束鹿凹陷 油气 |
| 收稿时间： | 2020-05-02 |
Geochemical Characteristics and Oil-Source Correlation of Crude Oils of Buried Hills in Shulu Sag,Jizhong Depression |
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| Wang Yuanjie,Cai Chuan,Xiao Yang,Ming Jin,Tian Ran,Ren Yi,Zhu Zhangli,Zhang Yujing,Shi Cong.Geochemical Characteristics and Oil-Source Correlation of Crude Oils of Buried Hills in Shulu Sag,Jizhong Depression[J].Earth Science-Journal of China University of Geosciences,2021,46(10):3629-3644. |
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| Authors: | Wang Yuanjie Cai Chuan Xiao Yang Ming Jin Tian Ran Ren Yi Zhu Zhangli Zhang Yujing Shi Cong |
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| Abstract: | In order to investigate the oil and gas sources of buried hill reservoirs in Shulu sag, the hierarchical cluster analysis (HCA) is used to divide the main source rock, and oil-source correlation is achieved through the comparison of biomarker and oil-rock maturity. The results show that the buried hill oils have similar geochemical characteristics on the whole, indicating that they come from the same set of source rock. The organic matter of Es1x source rock is dominated by algae and plankton, which is deposited in salt water and strong reduction environment and is in the stage of immature to low maturity. While the organic matter of Es3x source rock is mainly mixed input of plankton and higher plants, which is deposited in fresh-brine water, weak-oxidation and weak-reduction environment, and its maturity increases with the increase of depth. The Es3x source rock is further subdivided into four types: A, B, C, and D, and type D is the most favorable type. Comparison of biomarker and oil-rock maturity indicate that crude oils in buried hill reservoirs are mainly derived from Es3x source rock, of which oils in the slope buried hill are mainly derived from shallow low-mature Es3x source rock at the edge of the depression, and oils in the high-in-sag are mainly derived from deep high-over mature Es3x source rock in the center of the depression. |
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