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祁连山冻土区90个烃源岩样品测试分析的结果表明,侏罗系烃源岩基本处于成熟阶段;有机质为Ⅱ2型和Ⅲ型,主要来自陆相高等植物输入,为山间河湖沼泽相沉积;有机质丰度较高,是中等—好烃源岩。该区石炭系—三叠系烃源岩基本处于高成熟阶段;有机质主要为Ⅱ型,有机质来源为混源输入,为陆表海—滨海三角洲相沉积;有机质丰度较高,为中等—好烃源岩。天然气水合物主要为混合成因气。综合分析认为,侏罗系烃源岩正处于成熟阶段,有部分生气,而三叠系烃源岩处于主生气期,因此,推测三叠系和侏罗系烃源岩可能是该区天然气水合物的有利供气源岩。
The test results of 90 source rock samples in the Qilian Mountains permafrost show that the Jurassic source rocks are basically mature. The organic matters are Type II2 and Type III mainly from the input of higher plants in the terrestrial facies, Sedimentary; organic matter abundance is high, is moderate - good source rock. The Carboniferous-Triassic source rocks in this area are basically in high maturity stage; the organic matter is mainly of type II; the source of organic matter is mixed source; sedimentary facies-coastal delta sediments; and the abundance of organic matter is medium-good source of hydrocarbon rock. Gas hydrates are mainly gas mixtures. According to the comprehensive analysis, the Jurassic source rocks are in the mature stage and some are angry, while the Triassic source rocks are in the main gas generation period. Therefore, it is speculated that the Triassic and Jurassic source rocks may be the natural gas hydration The favorable gas source rock.