中国东部地区古近系油页岩矿床地质特征及找矿思路:以黄口凹陷为例

油页岩属于非常规油气资源,以资源丰富和可开发利用被列为重要的接替能源。以黄口凹陷为例,论述中国东部地区古近系典型凹陷的油页岩分布特征,探讨该区下一步找矿思路。中国东部地区典型凹陷的油页岩赋存于古近纪始新世—渐新世大汶口组中段下亚段和下段上亚段,为深灰色—黑色富有机质块状页岩,纹泥状韵律层发育。油页岩沉积稳定、分布广泛、横向连续性好、品位中低、构造简单,且地球物理特征显著。该区下一步找矿思路为“油(页岩)盐共探”和“物探先行、钻探验证”。

Geological characteristics and prospecting idea of Paleogene oil shaledeposits in eastern China: A case study of the Huangkou depression

Oil shale,an unconventional oil and gas resource,has been listed as a substitute for energy because of its abundant resources and exploitable utilization.Taking the Huangkou depression as an example,this paper analyzed the distribution characteristics of oil shale in the typical depression in eastern China to explore the methods of further prospecting for oil in this area.Oil shale in the typical depression of eastern China occurs in the middle and lower parts of the Dawenkou Formation of Eocene to Oligocene of Paleogene.Dark gray to black massive shale rich in organic matter is characterized by well development of muddy rhythmic layering,stable deposition,wide distribution,good continuity,low and medium grade,simple structure,and distinct geophysical anomaly.The further prospecting in the area is to investigate oil(shale)and salt together using geophysical prospecting followed by drilling verification.