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。
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.
出处
《西南石油学院学报》
CSCD
1997年第4期31-35,共5页
Journal of Southwest Petroleum Institute
关键词
煤成油
微组分
侏罗系
盆地
烃源岩
生烃
Oil generated from coal
Maceral
Hydrocarbon generation model
Source rocks
Jurassic period
