准东地区石炭系有机质以腐殖型和混合型为主,具有烃源岩厚度大、有机质丰度较高及成熟度普遍较高的特征,总体为中等—好烃源岩。由于沉积环境和构造运动对有机质的丰度和热演化程度的影响较大,导致石炭系烃源岩的品质在纵向上和横向上具有差异性,表现为纵向上巴塔玛依内山组最好,横向上五彩湾凹陷和北三台地区最好。 The main carbonaceous organic matter in Quandong area is dominated by humus and mixed type, which has the characteristics of large source rock thickness, high organic matter abundance and generally high maturity, and is generally medium-good source rock. As the sedimentary environment and tectonic movement have a great influence on the abundance and thermal evolution of organic matter, the quality of the Carboniferous source rocks is different longitudinally and horizontally, which is the best in the vertical Batamayi Unending Group , Horizontal Wucaiwan depression and the best of the three northern regions.