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CO2与有机液体混合物的作用机理研究对于CO2驱提高采收率具有指导性意义,研究温度、压力、组成等因素对于CO2在有机液体中的溶解度和体积膨胀系数的影响,有助于揭示CO2与有机液体混合物的作用机理。选取石油醚、航空煤油、原油三个有机混合物体系,测定不同压力、温度的条件下的溶解度和体积膨胀系数,从体系内分子间作用力的角度分析温度对于溶解度和体积膨胀系数的影响,从组成有机混合物的烷烃的分子链长度角度分析不同的组成对于溶解度和体积膨胀系数的影响。
The study of the mechanism of action of CO2 and organic liquid has guiding significance for enhanced recovery of CO2 flooding. Studying the influence of temperature, pressure and composition on the solubility and volume expansion coefficient of CO2 in organic liquid will help to reveal the relationship between CO2 and The mechanism of action of organic liquid mixture. The three organic mixture systems of petroleum ether, aviation kerosene and crude oil were selected to measure the solubility and the volume expansion coefficient under different pressures and temperatures. The influence of temperature on the solubility and the coefficient of thermal expansion was analyzed from the intermolecular forces in the system. The molecular chain length of the paraffins that make up the organic mixture analyzes the effect of different compositions on solubility and volumetric expansion coefficient.