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Investigation of Petroleum Inclusion and Primary Migration of Petroleum of Source Rocks in the Laiyang Depression
Author(s): 
Pages: 163-167
Year: Issue:  1
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  莱阳凹陷烃源岩石油包裹体油气初次运移;
Abstract: 莱阳凹陷莱孔2井下白垩统莱阳组水南段暗色泥岩为富含藻类体和无定形体的优质烃源岩.用高倍荧光显微镜观察,在这些暗色泥岩的砂质碎屑矿物和自生矿物中,发现丰富的微石油包裹体群.这些石油包裹体的均一温度较集中,为78~82 ℃.根据莱孔2井水南段古地温演化历史,进一步推算出烃源岩中这些石油包裹体的形成时间为74~77 Ma.根据PVTsim模拟计算,这些石油包裹体的捕获压力为305~307 bar.莱阳凹陷水南段暗色泥岩石油包裹体的发现,说明该凹陷在第三纪抬升以前水南段暗色泥岩曾经历过深埋与生排烃作用,为本区重要的烃源岩.
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