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额济纳旗土壤油气化探试验剖面地球化学研究成果表明,酸解烃化探指标具有高的烃类背景值和强的烃类异常显示,并具有甲烷碳同位素偏重、干燥系数大的特点。烃类指标在剖面上的丰度变化受石炭-二叠系分布及其构造的控制,在石炭-二叠系深埋区,酸解烃甲烷和重烃均具有较高的背景值,并且强异常段与石炭-二叠系局部构造高有良好的对应关系,表明土壤酸解烃异常应为与古生界烃源岩有关的油气赋存信息的反映。
The geochemical research results of the geochemical exploration profile of the Ejinaqi oil and gas field show that the indicators of acid-hydrolyzed and hydrocarbon-derived geochemical exploration have high hydrocarbon background values and strong hydrocarbon anomalies, and have the characteristics of heavy methane carbon isotope and large drying coefficient. The abundance changes of hydrocarbon indicators in the profile are controlled by the distribution of Carboniferous-Permian and its structure. In the Permo-Carboniferous buried-zone, both the acid-solved hydrocarbon and the heavy hydrocarbon have high background value and are strong The anomalous section has a good correspondence with the local structure of Carboniferous-Permian, indicating that the abnormal acid-solvation of soil should be a reflection of hydrocarbon-bearing information related to Paleozoic source rocks.