烃源条件对古潜山油气藏形成的控制作用——以辽河断陷大民屯凹陷太古宇古潜山为例

Control action of source rock condition on hydrocarbon accumulation in buried hill reservoir:A case study with the Archaeozoic buried hill in the Damintun depression of the Liaohe rift

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。

This paper studies source rock conditions in the Damintun depression in respects of the abundance,vertical development and lateral distribution of source rocks,and analyzes the hydrocarbon migration conditions.The control action of source rock on hydrocarbon accumulation in the Archaeozoic buried hill is analyzed in conjunction with the exploration result in this area.The study indicates that the source rock had controlled the abundance,types and bottom depth of hydrocarbon accumulation in a buried hill trap,and is a key control factor deciding whether an Archaeozoic buried hill trap can accumulate hydrocarbon in this area.