摘要
漠河盆地位于额尔古纳地块北缘,盆地整体勘探程度较低,漠河盆地白垩系二十二站组发育了多套泥岩。为探讨其烃源岩潜力,结合有机地球化学实验及饱和烃气相色谱实验,分析漠河盆地白垩系二十二站组泥岩样品的有机地球化学特征。结果表明:二十二站组泥岩样品具有高有机质含量、低生烃潜力的特点,有机质类型为II2型,有机质处于低成熟-成熟阶段,镜质体反射率小于1.2%;饱和烃气相色谱显示二十二站组泥岩的有机质来源为混合型,低等水生生物及高等植物均为良好的生烃母质,沉积环境为弱还原环境,有利于沉积有机质的保存,干酪根主要处在生低熟气阶段。
This paper is an attempt to explore the source rocks potential of Ershi'erzhan formation mudstones in Mohe Basin.The research focuses on analyzing the organic geochemical characteristics combined with organic geochemical experiments and saturated hydrocarbon gas chromatography experiments.The results show that the mudstone samples are characterized by higher organic matter content and lower hydrocarbon generation potential.The organic matter is of type II2 and is in a low mature-mature evolution stage,suggesting the vitrinite reflectance of less than 1.2%.The spectrums of saturated hydrocarbon gas chromatography experiments indicate that the source of organic matter is of a mixed type.Both lower aquatic organisms and higher plants represent favorable hydrocarbon-generating materials.The sedimentary environment occurring as a weak reducing environment is conducive to the preservation of sedimentary organic matter.The kerogen is mainly in a low mature gas generation stage.
作者
杜添添
曲跃
Du Tiantian;Qu Yue(School of Mining Engineering,Heilongjiang University of Science & Technology,Harbin 150022,China;College of Earth Sciences,Jilin University,Changchun 130061,China)
出处
《黑龙江科技大学学报》
CAS
2019年第1期1-4,共4页
Journal of Heilongjiang University of Science And Technology
基金
国家自然科学基金重点项目(41430322)
关键词
漠河盆地
二十二站组
有机地球化学特征
烃源岩评价
低熟气
Mohe Basin
Ershi'erzhan formation
organic geochemical characteristics
source rock evaluation
low mature gas
