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  

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

作　　者：李贤庆[1,2] 马安来[1,2] 熊波 包建平[1,2] 钟宁宁 

机构地区：[1]江汉石油学院分析测试研究中心 [2]石油大学地科系

出　　处：《西南石油学院学报》1997年第4期31-35,共5页Journal of Southwest Petroleum Institute

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. 

关 键 词：煤成油 微组分 侏罗系 盆地 烃源岩 生烃 

分 类 号：P618.130.1[天文地球—矿床学]