西南石油大学学报(自然科学版) ›› 1997, Vol. 19 ›› Issue (4): 31-35.DOI: 10.3863/j.issn.1000-2634.1997.04.006

• 石油地质勘探 • 上一篇    下一篇

新疆三塘湖盆地侏罗系烃源岩显微组分剖析及其生烃模式

李贤庆 马安来 熊波 包建平 钟宁宁   

  1. 江汉石油学院分析测试研究中心,荆州434102
  • 收稿日期:1997-03-27 修回日期:1900-01-01 出版日期:1997-11-20 发布日期:1997-11-20

Microscopic Component Analysis of Source Rocks and the Hydrocarbon Generation Model in Jurassic, Santanghu Basin, Xinjiang

LI Xian-qing,MA An-lai, XIONG Bo, et al   

  1. Analytical and Testing Center, Jianghan Petroleum Institute, Jingsha, Hubei 434102
  • Received:1997-03-27 Revised:1900-01-01 Online:1997-11-20 Published:1997-11-20

摘要: 采用有机岩石学全岩分析方法,研究了新疆三塘湖盆地侏罗系烃源岩的显微组分及其生
烃模式。该盆地烃源岩富镜质组,贫腐泥组,但西山窑组下部烃源岩相对富集壳质组和腐泥组。
壳质组和腐泥组含量与组成决定了烃源岩生烃特点和潜力。三塘湖盆地侏罗系煤成油生成模
式明显不同于吐哈盆地,其生油门限Ro为0.5%,是由孢子体和角质体为主要组分贡献成烃。
 

关键词: 煤成油, 微组分, 烃, 侏罗系, 三塘湖盆地

Abstract: Microscopic components and hydrocarbon generation model of Jurassic source rocks in Santanghu Basin, Xinjiang are studied by using the whole rock analytical method of organic petrology. The results show the source rocks in Santanghu Basin contain rich vitrinite and poor sapropelinite. However, exinite and sapropelinite are relatively concentrated in source rocks of the lower part of Xishanyao formation. The content and composition of exinite and sapropelinite determine the hydrocarbon-generating feature and potential of source rocks. The model of oil generation from coal in Jurassic in Santanghu Basin is obviously different from that in Tuha Basin. It is suggested that the reflectance of vitrinite (Ro) in the beginning of oil formation is about 0.5% and oil generated from coal is mainly contributed by sporinite and cutinite.

Key words: Oil generated from coal, Maceral, Hydrocarbon generation model, Source rocks, Jurassic period

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