From the analysis of three petroleum systems′ characteristics in detail it can draw conclusions that: (1) F or K 1q n-P G F Y petroleum system, source rock quality is good, evolution degree is high. So this is a mature and high mature system.
在详细分析 3个油气系统特征的基础上 ,得出以下结论 :K1qn—P G F Y油气系统烃源岩质量好 ,演化程度高 ,为成熟—高成熟的油气系统 ;
The source rocks of the petroleum system of Lower Jurassic in th e northern part of Qaidam Basin are the coal measure strata of Lower Jurassic an d its reservoirs are sandstones of Lower Jurassic and Tertiary.
The palaeo uplift of Leshan Longnvsi in central Sichuan Basin, in age of Sinian, is a complex petroleum system formed with many sources and periods,in which the hydrocarbon source is generated from sapropelic material dark shale in Qiongzhusi Formation basis, Lower Cambrian, then the dark seaweed dolomite and shale in the third member of Dengying Formation (Sinian).