鄂尔多斯盆地何家坊地区三叠系油页岩特征

为了认识陕西省铜川市何家坊地区三叠系延长组长7油页岩矿床特征、品级质量和勘探前景，对何家坊地区三叠系油页岩成矿地质背景和油页岩样品数据进行了研究分析，并对比了井下和地表油页岩参数变化。该区油页岩厚度较大、油页岩段集中、分布稳定、含油率较高，为厚层中品级富-高硫油页岩；地表油页岩由于覆压减小等影响，页理张开、孔隙增加、密度减小。油页岩油气含量更能反映其利用价值，油页岩开发必须考虑含气量的综合利用。

Characteristics of the Triassic Oil Shale in the Hejiafang Area, Ordos Basin

In order to understand deposit characteristics, grade quality and exploration prospects of the Chang 7 oil shale mineral deposit in Yanchang Formation and provide a reference for further investigating oil shale in the Hejiafang area, Shannxi Province, the author has studied metallogentic background of the Triassic oil shale in the Hejiafang area and analyzed the data of the oil shale samples. The author has also compared the variations of parameters of oil shale between surface and underground and concluded that the oil shale is high in thickness, concentrated and stable in distribution, and high in oil production rate, and therefore is considered as medium-grade sulfer-rich oil shale. The oil shale on the surface show opening foliation, abundant pore volume and low density because of less overburden pressure. The utilization values of oil shale are reflected by their oil and gas contents, and therefore comprehensive utilization of gas must be considered during the mining of oil shale. The studied area is abundant with Triassic oil shale and shows good exploration potential.