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从烃源岩的丰度、纵向发育及横向分布情况等方面对大民屯凹陷烃源条件进行研究,并对其油气运移条件进行分析。结合该区的勘探成果,分析烃源岩在太古宇古潜山油气成藏中的控制作用。研究结果认为,烃源岩控制了古潜山圈闭的含油气丰度、油气类型及成藏底界深度,是决定该区太古宇古潜山圈闭能否形成油气藏的关键控制因素。
The hydrocarbon source conditions of Damintun depression were studied from the aspects of abundance, vertical development and horizontal distribution of source rock, and the hydrocarbon migration conditions were analyzed. Combined with the exploration results in this area, the control of source rocks in the hydrocarbon accumulation in Archean buried hill is analyzed. The results show that the source rocks controlled the hydrocarbon abundance, type of hydrocarbon and the depth of hydrocarbon accumulation in the buried hill, which is the key control factor that determines the formation of the Archean buried hill trap in this area.