关键词: 烃源岩, 二叠系, 乌丽冻土区, 青藏高原

Abstract:

In order to find out the hydrocarbongenerating potential of Permian source rocks in Wuli permafrost zone, QinghaiTibetan Plateau, the cores from gashydrate trial hole (ZK1) and its adjacent drilling holes were analyzed. The results show that the organic matter abundance of upper member source rocks of Nayixiong Formation in Upper Permian  is poor, while the abundance of the lower member is fair to good. The organic type is mainly constituted by Ⅲ kerogen, which is in favor of generating gas. The thermal evolution degree of Permian source rocks is very high, reaching to excessive maturity. Considering that the maturity of mudstone and metamorphic grade of coal bed are very high in Wuli Permafrost zone, it can be drawn a conclusion that the hydrocarbongenerating potential of Permian source rocks is general good in Wuli permafrost zone,QinghaiTibetan Plateau.

Key words: source rock, Permian, Wuli permafrost zone, QinghaiTibetan Plateau