吐拉盆地中—下侏罗统烃源岩评价

Evaluation on Hydrocarbon Source Rocks of the Lower and Middle Jurassic in Tula Basin

通过对吐拉盆地中-下侏罗统烃源岩有机碳含量、可溶有机质含量、热解参数、干酪根显微组分、干酪根元素、干酪根炭同位素、镜质体反射率等方面的分析,讨论了烃源岩的有机质丰度、类型和成熟度。研究表明:吐拉盆地中-下侏罗统烃源岩总体属于差—中等烃源岩;有机质类型多为Ⅲ型,少数为Ⅱ型;有机质处于高熟演化阶段。

In view of types, abundances arid thermal evolution properties on organic maiter, an ewaluation of the hydrocarbon source rocks of the lower and middle Jurassic in Tula basin is made. The analytical data show that the hydrocarbon source rocks of the lower and middle Jurassic in Tula basin are from poor to fair source rocks, Ⅱ-Ⅲ organic substance lie in high matured stage.