Pure component parameters were obtained by fitting vapor pressure, saturation liquid density and supercritical PVT data.

纯物质的参数由拟合纯物质的蒸汽压，饱和液相密度或超临界的PVT数据获得。

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The oil-gas system and the porous media are interaction system. The three phases of vapor, liquid and solid (rock) will co-exist in the porous media when the pressure is under the saturation pressure.

油气体系和储层多孔介质是一个相互作用的系统，当地层压力低于饱和压力时，储层中同时存在气、液、固(指岩石)三相。

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