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作者对产于山西的共生藻煤、烛煤、腐植煤分别进行了显微煤岩鉴定和有机抽提、族组分析和色谱——质谱研究。结果表明藻煤对与其共生的腐植煤镜质组反射率有显著的抑制作用,并影响腐植煤的可抽提率和正烷烃分布特征。藻煤中的粘土矿物抑制烃类析出。在相同热演化条件下藻煤的成熟度滞后于腐植煤。各类型煤的有机地球化学特征所提供的母质、形成环境以及成熟度等信息,与煤岩研究结果相吻合。藻煤和烛煤是较好的油源岩,并有大大提高与其共生的腐植煤的生油能力的作用。上述研究成果对煤成烃机理研究和生烃能力评价有实际意义。
The authors carried out micro-coal rock identification and organic extraction, ethnic group analysis and chromatography-mass spectrometry on symbiotic algal, candle and humic coal produced in Shanxi. The results showed that algal coal had significant inhibition on the vitrinite reflectance of symbiotic humus and affected the extractable rate of normalized coal and the distribution of n-alkanes. Clay minerals in algal coal inhibit hydrocarbon precipitation. Under the same thermal evolution conditions, the maturity of algal coal lags behind the humification of coal. Various types of coal organic geochemical characteristics provided by the parent material, the formation of the environment and maturity and other information, consistent with the coal and rock research results. Algal and coking coal is a better source rock and has the potential to greatly enhance the ability of the co-biofuel to produce crude oil. The above research results have practical significance for the study of hydrocarbon generation mechanism and hydrocarbon generation ability evaluation.