Steam injection is one of the popular methods for oil recovery enhancement. Success of this method to a significant extent depends on steam properties at a point of injection into a reservoir. A model of a steam flow through an injection tubing is developed. Heat losses from a flow to a surrounding formation are assumed to be quasi-steady state. A simplified model of a cylindrical reservoir at injection tubing end is introduced into the flow model to imitate realistic boundary conditions. Fluid thermodynamic parameters are calculated by using high-precision correlations. Computations performed are focused on high pressure – high temperature flow conditions. Effects of initial steam quality, fluid flow rate, different frictional pressure correlations and insulation thermal conductivity on distributions of steam quality, pressure and temperature along a vertical tubing are studied. An effect of initial steam conditions on a steam flow is also illustrated. A strong effect of hydrostatic pressure on a steam flow behavior is demonstrated.

蒸汽注入是提高采油率的流行方法之一。该方法的成功很大程度上取决于注入储层的蒸汽特性。建立了通过注入管的蒸汽流模型。从流向周围地层的热损失被假定为准稳态。在注水管端的圆柱形油藏简化模型被引入到流动模型中，以模拟现实的边界条件。流体热力学参数通过使用高精度相关性来计算。进行的计算着重于高压–高温流动条件。初始蒸汽质量，流体流速，不同的摩擦压力相关性和绝缘导热系数对蒸汽质量分布的影响，研究了沿垂直管道的压力和温度。还示出了初始蒸汽条件对蒸汽流量的影响。证明了静水压对蒸汽流动行为的强烈影响。