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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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依据热模拟实验动态建立煤成烃模式
Keywords: 显微组分,生烃潜力,碳同位素组成,生烃模式
Abstract:
？依据构成煤岩端元组分（壳质组、镜质组和惰质组）热模拟实验的生烃潜力和甲烷同位素组成数据，结合已建立的煤成油有效排出门限(30mg/gtoc)，建立了煤成烃模式，该模式表明：只有富氢的显微组分才有利于煤岩生油，且壳质组含量最低为5.0%，而镜质组最高含量为95.0%；当壳质组含量高于22.9%时，煤成油不受镜质组和惰质组二端元组成的影响。同时，按照煤成烃模式计算了不同端元组分在不同热演化阶段甲烷碳同位素组成的变化，结果表明：构成煤岩的显微组分含量能够引起烷烃气碳同位素组成的变化；在同一热演化阶段，甲烷碳同位素组成最大差异可达2.3‰。认为煤成气甲烷碳同位素组成不仅受热成熟度控制，而且也受煤岩显微组分相对含量的影响。
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