稠油蒸汽驱生产井井筒温度计算

为实现对蒸汽驱生产井井筒温度实时动态监测的目的，以传热学和两相流理论为基础，以能量守恒为依据，基于温度和压力对热物理参数的影响，着重考虑了蒸汽驱受效层对地温梯度变化的影响，推导出蒸汽驱稠油井井筒温度分布的非齐次微分方程，建立了井筒温度场的二维数学模型。据此可直接由井口温度、产量等参数准确计算出井筒温度分布规律，为进一步预防闪蒸、提高泵效提供理论依据。计算的井筒温度与实测温度吻合。

CALCULATION OF THE WELLBORE TEMPERATURE OF THE STEAM FLOODED HEAVY OIL PRODUCTION WELL

In order to monitor the temperature of the steam flooded production wells dynamicly,based on the heat transfer and two-phase flow theory，and energy conservation，taking into consideration the impact of the temperature and pressure on thermophysical parameters，we mphasize the effect on the geothermal gradient changed by the steam driver response layer，deduce out the wellbore temperature distribution of the non-homogeneous differential equation，and a two-dimensional mathematical model of wellbore temperature field is established.The temperature distribution in wellbore can be directly and accurately calculated according to the well-head temperature，output and other production parameters.This provides a theoretical basis for preventing flash vaporization and improving the pump efficiency.Wellbore temperature calculation is consistent with the measured temperature.