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本文通过对准噶尔盆地西北缘典型煤型气和油型气的人工混合实验，测定和分析了不同比例混合气中轻烃组成及碳同位素的变化，求得和建立了混合比与二甲基环戊烷含量及δ１３Ｃ１之间的相关式和经验图版，从而为今后估算混合气中煤型气和油型气的相对贡献提供了定量依据。本文还对该区混合气藏形成的地质条件进行了探讨。
In this paper, by the artificial mixing experiment of typical coal gas and oil gas on the northwestern edge of Junggar Basin, the changes of light hydrocarbon composition and carbon isotopes in different proportions of mixed gas were measured and analyzed. The mixing ratio and dimethylcyclohexane Pentane content and δ13C1 between correlation and empirical plate, which will provide a quantitative basis for the future estimation of the relative contribution of coal gas and oil gas in the mixture. The paper also discusses the geological conditions for the formation of mixed gas reservoirs in this area.