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油页岩作为非常规新能源之一,已经受到人们的广泛关注,是目前油气领域里的研究热点。前人及我们最近的研究结果表明:宁夏固原炭山地区存在大量的与煤伴生的油页岩资源。油页岩赋存于中侏罗统延安组之中。成矿环境为内陆湖泊环境。矿区构造为一中度弯曲的复式褶皱,两翼产状角度20°～30°。以纵向正断层为主。油页岩呈层状,有一定规模的油页岩一般分布于煤层的上部或底部;油页岩共8层,总厚度14.4m,含油率为2.7%～11%,发热量2.88～20.98MJ/kg,视比重1.55～2.46,灰分34.30%～83.68%。其中,煤19灰分大于40%,但含油率大于7%,被前人称之为炼油用煤。炭山油页岩宏观上呈黑色,略具油脂光泽。片状、层状构造,参差状、贝壳状断口。硬度小,条痕亮褐色,油脂光泽明显。油页岩矿石和页岩油边际经济的资源量分别为40301万吨、3718.3万吨,达中型规模,目前其经济价值至少在483亿元以上。炭山油页岩含油率高,品质好,资源量级别高,埋藏浅,交通条件好,并且现在已有煤矿正在采煤,可考虑与其联合开发和利用。
As one of the unconventional new energy sources, oil shale has drawn much attention from people and is the hotspot in oil and gas field. Our predecessors and our recent findings show that there are a large number of oil shale resources associated with coal present in the Carboniferous Shan area, Ningxia. Oil shale occurs in the middle Jurassic Yan’an Formation. The metallogenic environment is inland lake environment. The mining area is constructed as a moderately curved double folds with wings of 20 ° ~ 30 °. The main vertical fault. Oil shale is stratified and a certain amount of oil shale is generally distributed in the upper or bottom of the coal seam. There are 8 layers of oil shale with a total thickness of 14.4m, oil content of 2.7% ~ 11% and heat of 2.88 ~ 20.98MJ / kg, depending on the proportion of 1.55 ~ 2.46, ash 34.30% ~ 83.68%. Among them, the coal ash content of more than 40%, but the oil content of more than 7%, was formerly known as oil refining coal. Charcoal shale macroscopically black, slightly greasy luster. Flake, layered structure, mixed, shell-shaped fracture. Hardness, bright brown stripes, oil luster obvious. The marginal economic resources for oil shale ore and shale oil are 403,010,000 tons and 37,183,000 tons, respectively, reaching a medium-sized scale. At present, their economic value is at least 48.3 billion yuan. Carbon oil shale oil content is high, good quality, high level of resources, shallow buried, good traffic conditions, and now the coal mines are mining, we can consider joint development and utilization.