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自然界里,油砂是一种常见的油气显示,良好的找油标志。一般说来,它是被原油或烃类浸染过的砂岩,砾岩等碎屑岩、疏松砂层和灰岩、白云岩等碳酸盐岩。通常呈暗褐色——黑色,具油脂感,捻之染手。含油多的油砂犹如深棕色砂糖,新鲜的油砂有浓烈的油味。油砂的分布、产出与油气藏有关。石油地质工作者认为,它是油气运移过程中储集的一种形式和油气藏遭到破坏或泄漏后残留下来的产物。因此,发现油砂说明有储油岩层,并预示其地下油气藏的存在。地
In nature, oil sands is a common oil and gas show, a good sign to find oil. In general, it is sandstone, conglomerate and other clastic rocks, loose sand and limestone, dolomite and other carbonate rock impregnated with crude oil or hydrocarbons. Usually dark brown - black, with grease, twist of the dye hands. Oil-rich oil sand like dark brown sugar, fresh oil sand has a strong oil. Oil sands distribution, output and reservoir related. Petroleum geologists believe that it is a form of reservoir during hydrocarbon migration and the product of residual oil and gas reservoirs that have been destroyed or leaked. Therefore, the discovery of oil sands indicates that there are reservoirs and indicates the existence of subterranean reservoirs. Ground