| 煤岩显微组分模拟实验气态产物碳氢同位素特征 |
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| 引用本文： | 王晓瑜,马素萍,邱军利,雷天柱,夏燕青. 煤岩显微组分模拟实验气态产物碳氢同位素特征[J]. 天然气地球科学, 2010, 21(2) |
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| 作者姓名： | 王晓瑜 马素萍 邱军利 雷天柱 夏燕青 |
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| 作者单位： | 1. 中国科学院油气资源研究重点实验室,甘肃,兰州,730000;中国科学院研究生院,北京,100049
2. 中国科学院油气资源研究重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家科技重大专项基金 |
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| 摘 要： | 碳氢同位素研究是油气地球化学研究的一个重要方面。通过对神山褐煤镜质组与丝质组中碳氢同位素的分析得出:同一温阶,镜质组和丝质组气体产物中甲烷及其同系物具有与天然气相似的碳同位素分布特征,随烷烃分子碳数增加而逐渐增高,即δ13C1δ13C2δ13C3;不同温阶时,气体产物中甲烷及其同系物的δ13C具有明显的同位素分馏特征,即随温度的增加δ13C1、δ13C2、δ13C3值相应增高。而对镜质组与丝质组气体产物中的δD而言:同一温阶,具有δDH2δD1δD2δD3δD4的规律;不同温阶,随温度的增加,δDH2、δD1、δD2、δD3、δD4值相应增高,也表现出明显的同位素分馏特征。
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| 关 键 词： | 碳氢同位素 模拟实验 气态产物 神山褐煤 |
Carbon and Hydrogen Isotopes of Gaseous Products from Coal Maceral in Simulation Experiments |
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| WANG Xiao-yu,MA Su-ping,QIU Jun-li,LEI Tian-zhu,XIA Yan-qing. Carbon and Hydrogen Isotopes of Gaseous Products from Coal Maceral in Simulation Experiments[J]. Natural Gas Geoscience, 2010, 21(2) |
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| Authors: | WANG Xiao-yu MA Su-ping QIU Jun-li LEI Tian-zhu XIA Yan-qing |
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| Affiliation: | WANG Xiao-yu1,2,MA Su-ping1,QIU Jun-li1,LEI Tian-zhu1,XIA Yan-qing1(1.Key Laboratory of Petroleum Resources Research,Institute of Geology , Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Carbon and hydrogen isotope is an important tool for gas geochemistry.In this paper,carbon and hydrogen isotopes of gas products from vitrinite and fusinite isolated from lignite coal in Shenshan were measured.The result showed that δ13C values of methane and its homologues in gaseous products have a similar tendency of carbon isotope of alkane gases in natural gas at the same temperature,in which δ13C values become heavier with carbon number,i.e.δ13C1＜δ13C2＜δ13C3.Meanwhile,δ13C values of methane and its homologue(δ13C1,δ13C2,δ13C3)in gaseous products become heavier with increase of simulation temperature.In addition,δD values in gaseous products generated from vitrinite and fusinite has a serial of δDH2＜δDc1＜δDC2＜δDC3＜δDC4 at the same temperature,and the same change of δD values in gaseous products is observed with increasing temperature,i.e.δDH2＜δDC1＜δDC2＜δDC3＜δDC4. |
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| Keywords: | Carbon and hydrogen isotope Simulation experiment Gaseous product Shenshan coal |
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