Acta Scientiarum Naturalium Universitatis Pekinensis

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An Organic Petrological Research on Rock-Eval Pyrolysis Parameters of Coal from the Jurassic in Santanghu Basin, Xinjiang, Northwest China

HUO Yongzhong1, ZENG Fangang2, WANG Guanyu2   

  1. 1China University of Geosciences, Beijing, 100083; 2Geology Department, Peking University, Beijing, 100871
  • Received:1997-06-23 Online:1998-11-20 Published:1998-11-20


霍永忠1, 曾凡刚2, 王关玉2   

  1. 1中国地质大学能源系,北京,100083; 2北京大学地质学系,北京,100871

Abstract: A series of the Jurassic coals in Santanghu Basin has been studied by Rock-Eval pyrolysis, white microscopy, and element analysis, with an aim of evaluation of coals type. The results obtained by Rock-Eval pyrolysis are different from those by the other approaches. The influences, such as maceral composition, deposit-diagenetic environment and maturity, have been analysed, the conclusion is that high-content of hydrogen-rich maceral(4%-19%) in the coals and the maturity are important effects on hydrogen index, H/C atomic ratio, and types of coal. The method in evaluating coal types was discussed as well in the present paper.

Key words: coal, Rock-Eval pyrolysis, organic petrology, type of organic matter

摘要: 对新疆三塘湖盆地侏罗系11个煤样进行了Rock-Eval热解分析、显微组分定量分析、镜质体反射率测定及元素分析,不同方法所评价的煤有机质类型存在着一定的差异。通过对显微组分构成、沉积-成岩环境及有机质成熟度等因素的综合剖析,认为三塘湖盆地侏罗系煤中含量较高的富氢显微组分(4%~19%)和成熟度是影响氢指数(IH)、H/C原子比的主要因素,并对煤有机质类型的评价产生了一定的影响。探讨了煤有机质类型评价的思路与方法。

关键词: 煤, 热解分析, 有机岩石学, 有机质类型

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