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分析了鄂尔多斯盆地中部气田天然气中的 He,Ar,Kr和Xe稀有气体同位素组成,并探索应用重稀有气体（Kr,Xe）同位素探讨了中部气田天然气地球化学和气源对比问题.天然气中重稀有气体同位素组成,特别是Xe同位素组成也显示出中部气田天然气两源复合特征,气田的东北部与西南部的气体来源有一定差异.总体上,下古生界气源对西南部比东北部贡献大.两类气体在重稀有气体同位素组成及其与Ar同位素组成的关系中均有一定体现.因此,轻、重稀有气体同位素组成的综合研究,可以为气源对比和追索提供更有用的信息.
The isotopic compositions of He, Ar, Kr and Xe rare gases in the natural gas in the central Ordos Basin are analyzed and the gas natural gas geochemistry and gas source contrast in central gas fields are explored using heavy rare gas (Kr, Xe) isotopes. The gas isotopic compositions, especially the Xe isotopic composition, also show the characteristics of the two-source complex of natural gas in the central gas field, with some differences in the gas source in the northeast and southwest of the gas field.Generally, the contribution of the Lower Paleozoic source to the southwestern part of the northeast The two types of gases are all reflected in the relationship between heavy rare gas isotopic composition and Ar isotopic composition. Therefore, the comprehensive study of light and heavy rare gas isotope composition can provide more useful for gas source comparison and recourse information.