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天然气组分、同位素分馏机理及实例分析

Keywords: 天然气组分,同位素组成,分馏机理,实例分析

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Abstract:

?天然气组分、同位素的分馏伴随其生成、运移及保存的整个过程,生成过程中组分、同位素分馏效应由反应基团活化能的差异引起,表现为随成熟度升高,产物同位素组成逐渐接近母质;天然气运移过程中的分馏机制与运移方式有关,以溶解相、游离相和扩散相运移的天然气,其组分、同位素分馏分别由组分或同组分不同同位素分子的溶解、吸附及扩散能力差异引起,均可用动力学理论进行解释;除扩散作用外,微生物降解是天然气藏内天然气组分、同位素分馏的重要机制,其过程受微生物种类及动力学过程控制。在此基础上,对国内外天然气运移、保存分馏实例进行了分析。

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