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为了确定酸性气藏含水是否对其流体物性有影响,笔者通过对普光酸性气田的气样配置了相应的实验无水气样和含水气样,并进行了无水酸性气体和含水酸性气体PVT实验研究。实验结果表明:酸性气体含水对气体偏差因子无影响,而对气体黏度有较大影响,主要表现在低压(<40MPa)条件下。温度对酸性气体的含水量、黏度、偏差因子影响较小。同一压力条件下,温度越高,酸性气体中所含水量越大,气体黏度越小。一定温度、低压条件下,压力升高,气体含水量急剧下降,含水酸性气体黏度减小的程度明显高于未含水酸性气体黏度减小的程度;高压(>40MPa)条件下,压力的升高,酸性气体的含水对其黏度影响较小。
In order to determine whether the water content of acid gas reservoirs has any influence on the fluid properties, the author has configured the experimental anhydrous gas samples and the water-containing gas samples for the gas samples from the Puguang acid gas field and conducted the PVT experiments of anhydrous acid gas and aqueous acid gas the study. The experimental results show that: the acid gas water has no effect on gas deviation factor, but has a greater impact on gas viscosity, mainly in the low pressure (<40MPa) conditions. Temperature on the acid gas water content, viscosity, deviation factor less affected. Under the same pressure conditions, the higher the temperature, the greater the amount of water contained in the acid gas, the smaller the viscosity of the gas. Under certain temperature and pressure conditions, the pressure rises and the water content of the gas drops sharply, the viscosity of the aqueous acidic gas decreases obviously, which is obviously higher than that of the non-aqueous acid gas. Under high pressure (> 40MPa), the pressure increases , Acid gas water has little effect on its viscosity.