三肇凹陷低成熟原油地球化学特征及成因探讨GEOCHEMICAL CHARACTERISTICS AND FORMING CAUSE OF LOW MATURECRUDE OIL IN SANZHAO DEPRESSION
霍秋立，冯子辉
Zhang WenzhaoHuo Qiuli;
摘要(Abstract)：
三肇凹陷低熟原油同成熟原油相比，具有低饱和烃、高非烃，生物标志化合物以规则甾烷为主，重排甾烷和４─甲基甾烷较少，ａａａＣ＿２９２０Ｓ／２０Ｓ＋２０Ｒ在０．２６～０．３４，Ｃ＿２９甾烷ββ／ββ＋ａａ＜０．３。油源对比认为低熟原油与低成熟泥岩有亲缘关系．其分布受低成熟泥岩区控制。
Comaring with mature crude oil,the low mature crude oil in Sanzhao depressionbears the characteristics of low saturated hydrocarbon,high nonhydrocarbon,biological-marking compound being dominated by regular sterane,diasterane and tetramethyl steranebeing relatively less,aaaC_29 20S/20S+20R being between 0.26～0.34 and C_29 sterane ββ/ββ+aa < 0.3.Low mature crude oil is proposed to be affiliated with low mature mudstonethrough oil-to-source correlation,and its distribution is also controlled by low mature mud-srone.
关键词(KeyWords)：
三肇凹陷，低成熟油，地球化学特征，成因，油源对比
Sanzhao depression,Low mature cruded oil,Geochemistry,Characteristics,Forming cause,Oil-to-source correlation
基金项目(Foundation):
作者(Authors):
霍秋立，冯子辉
Zhang WenzhaoHuo Qiuli;
DOI: 10.19597/j.issn.1000-3754.1995.04.002