二连盆地高力罕凹陷腾格尔组一段烃源岩特征及资源量评价

Source rock characteristics and resource evaluation of the first member of Tengger formation in Gaolihan sag,Erlian Basin

本文系统分析了腾格尔组一段的烃源岩分布、有机质丰度及有机质类型等,对比分析了腾一段与阿尔善组的烃源岩特征并开展了资源量计算。研究表明:腾一段与阿尔善组是研究区重要的烃源岩类型,阿尔善组生烃潜力明显高于腾一段;腾一段为中等烃源岩,有机质类型主要为Ⅱ~Ⅱ型;腾一段石油资源量为(876~1314)×10~4t,整体上为次要油源层。

In this paper,the distribution of source rocks,abundance and type of organic matter in the first member of Tengger Formation are systematically analyzed,and the characteristics of source rocks in the first member of Tengger Formation and the Aishan Formation are compared,then the resource quantity is calculated. The first Member of Tengger Formation and the Aishan Formation are important hydrocarbon source rocks in the study area. The hydrocarbon generation potential of the Aishan Formation is obviously higher than that of the first member of Tengger Formation. The first member of the Tengger Formation is a medium source rock with organic matter type Ⅱ1~Ⅱ2. The oil resources is 876~1314×104t,which is a secondary oil source.