论文部分内容阅读
综合应用有机岩石学、地球化学及孢粉学的研究方法 ,对吐哈盆地台北凹陷及准噶尔盆地南缘J2 x煤系的沉积有机相在陆相层序的格架中的分布特征进行了探讨。研究表明 ,一般情况下 ,各类沉积有机相在层序地层格架纵向上以湖侵体系域为中心对称分布 ,生烃能力最强的烃源岩出自湖湾—半深湖有机相 ,其位置一般出现在湖侵体系域中部 ,向上向下 ,烃源岩生烃能力依次变差。
Based on a comprehensive study of organic petrology, geochemistry and palynology, the distribution characteristics of sedimentary organic facies in the J2x coal series in the continental sequence in the Taibei Sag and the southern Junggar Basin are discussed . The results show that, in general, all kinds of sedimentary organic phases distribute symmetrically in the longitudinal sequence of the sequence stratigraphic framework centering on the lacustrine system tract. The source rocks with the strongest hydrocarbon generation come from the lake-semi-deep lake organic phase, The location generally appears in the central part of the lake invasion system tract, up and down, and the hydrocarbon generation ability of source rocks in turn becomes worse.