Permian system hydrocarborn source rocks in Yili basin

The features of hydrocarbon generating with the organic matters included in Permian system dark mudstones in YiLi basin are mainly researched.This research is based on the analysis of geochemical data of the dark mudstones on outcrop sections and bore hole specimens by means of organic petrology, Rock Evel, geochemistry and so on the comprehensive test. The factors of influence on controling hydrocarbon generating of hydrocarbon source rocks are analysed. The study shows as follows: (1) Tamqisayi formation dark mudstones are main kind of hydrocarbon source rocks in Permian system; (2) Most of the organic metters are typeⅡ 2 to Ⅲ,the better part of them are typeⅡ 1;(3) The organic matters are at maturity to higher maturity stage respectively.