吐哈盆地杜家台构造侏罗系生油岩热演化特征

THE FEATURES OF THERMAL DEVELOPMENT OF JURASSIC SYSTEM'S SOURCE ROCKS IN DUJIATAI STRUCTURE OF TUHA BASIN

利用干酪根镜质体反射率等多项指标分析了吐哈盆地杜家台构造侏罗系生油岩的热演化特征，认为该构造上生油岩生油门限在３５６０ｍ 左右。侏罗系七克台组、三间房组、三工河组的生油岩处于未成熟阶段，西山窑组和八道湾组也尚未进入生油阶段。八道湾组煤系地层成熟度高，已经进入亮煤阶段，煤成气生成量多，是重点勘探层。

The features of thermal development of Jurassic System's source rocks in Dujiatai structure of Tuha basin is studied by reference to several indexes including reflect rate of vitrinite of Rerogen. It is believed that the source rocks of Qigetai group, Sanjianfan group and Sangonghe group of Jurassic System have not been in mature state, nor do those of Xishanyao group and Badaowan group. It has been pointed out that the coal containing strata in Badaowan group is an important target, which should be explored.