中文摘要：

建立了蒸汽驱热水驱替部分湿饱和流动热流耦合的物理模型，在其基础上得到包括温度方程、压力方程、饱和度方程、渗流速度方程等在内的数学模型，采用全隐式中心差分方法，得到温度场、压力场等的迭代公式，对某应用示例的数值模拟说明了其过程的热流耦合机制，并指出应对油藏实施有效的加热降黏措旌，可同时提高原油采收率和采油速率．

英文摘要：

The coupled thermo-hygro physical model for wet saturated flow of hot water section in steam driving is set up. On this basis, a mathematical model including temperature equation, pressure equation, saturation equation, seeping velocity equation etc. is obtained. The central difference method of total implicit is used to determine the iterative formula of temperature field and pressure field. The numerical simulation of some applied example can explain its coupled thermo-hygro mechanism. Also it is pointed that the effective measures of heating and reducing viscosity should be taken into oil well since they can increase the crude recovery efficiency and production speed simultaneously.