利用加速量热仪测定原油氧化动力学参数
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国家自然科学基金“基于燃料沉积演化机制的火烧油层启动与控制”(项目编号51674198),国家自然科学基金青年基金“基 于边界元方法的致密油藏体积压裂水平井多尺度、多机理耦合流动模型研究”(项目编号51804258)


Kinetic Parameters Determination of Crude Oil Oxidation by Accelerated Calorimeter
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    摘要:

    在注空气提高石油采收率技术研究中,原油氧化动力学参数既是基础数据,同时也能评价该技术在矿场应 用的可行性。为明确原油氧化动力学特征,采用加速量热仪法,在高压绝热条件下研究原油的氧化特征。结果 表明,通过加速量热实验可确定原油点火温度;运用动力学理论对实验数据处理,推导出原油氧化动力学特性数 学模型,得到动力学参数的计算方法,进而求出原油的活化能和指前因子。与热重分析法和差示扫描量热仪等 常规方法相比,加速量热仪法更接近地层实际条件,原油氧化动力学参数测定结果更准确,具有良好的推广价值 和应用前景。

    Abstract:

    In the study of air injection technology for enhancing oil recovery,the kinetic parameters of crude oil oxidation are not only basic data,but also can evaluate the feasibility of this technology in the field project application. In order to clarify the oxidation kinetics of crude oil,the accelerated calorimeter method was used to study the oxidation characteristics of crude oil under high pressure adiabatic condition. The results showed that the ignition temperature of crude oil could be determined by accelerated calorimetry experiment,and the mathematical model of oxidation kinetics of crude oil could be deduced after the experiment data was processed by using kinetic theory. After the calculation method of kinetic parameters was obtained,the activation energy and pre-exponential factor of crude oil could be calculated. Compared with the conventional methods such as thermogravimetric analysis and differential scanning calorimeter,the accelerated calorimeter method was more close to the actual formation condition,and the determination results of crude oil oxidation kinetic parameters were more accurate,which had good promotion value and application prospect.

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  • 在线发布日期: 2021-07-06
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