中文摘要：

为了综合确定伊通盆地莫里青断陷的主力烃源岩,深化油气成藏动力学过程研究,在烃源岩分布特征及有机质丰度、类型和成熟度分析的基础上,应用含油气盆地数值模拟技术,定量恢复了研究区主要烃源岩层系的生排烃史。研究表明,莫里青断陷主要发育始新统双阳组、奢岭组和永吉组3套烃源岩系,其中双阳组泥岩为主力烃源岩,具较高的有机质丰度、成熟度、生烃强度与排烃效率;以双阳组为烃源岩的油气系统应是该区油气勘探的主要目标。

英文摘要：

In order to deepen the research of hydrocarbon accumulation process and identify the principal source rock of Moliqing rift in Yitong Basin, the hydrocarbon generation history and expulsion history in the study area are reconstructed quantitatively by dynamic numerical modeling of the petroliferous basin based on the analysis of source rock distribution characteristics, organic matter abundance, types and maturation. Three source rocks are revealed in the study area： Shuangyang Formation, Sheling Formation and Yongji Formation, among which the first formation is the principal one. Shuangyang Formation has a high organic matter abundance, maturation hydrocarbon generation intensity and hydrocarbon expulsion efficiency. It is suggested that the petroleum system in this formation should be the major exploration target in the study area.