A Calculation Method and Application of Temperature and Pressure Distribution in CO2 Injection Wells
Abstract: Because CO2 within the reservoir fluid has the characteristics of reducing the viscosity and interfacial tension of the oil, CO2 miscible or immiscible flooding is used in the field to enhance oil recovery. With the development of the application of CO2 flooding technology, there exists an urgent problem in CO2 injection process and developing design: how to estimate the temperature, pressure and phase distribution of CO2 in the wellbore under different injection parameters quickly and accurately, in order to avoid the cold damage to the formation caused by injecting supercold liquid CO2, and get the maximum flooding effect. Based on the consideration of CO2 compression factor, specific heat capacity and viscosity, this paper established a model to calculate the temperature and pressure of CO2 injection wells. Comparing the simulation results of CO2 gas wells in oil field M with the measured, it indicates that the model can be commendably applied to calculate the wellbore temperature and pressure of CO2 injection well. The calculation results can provide the theoretical basis for CO2 flooding process and developing design.
文章引用: 唐萍 , 石阔 , 柯文奇 (2017) 注CO2井井筒温度压力分布计算方法及应用。 流体动力学， 5， 29-37. doi: 10.12677/IJFD.2017.51004
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