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根据传热学和两相流原理，建立了超稠油双管泵下掺蒸汽井筒加热降粘举升过程中蒸汽与产液沿井筒传热与流动的热力学模型。计算了蒸汽与产液沿井筒的温度分布和压力分布，进行了抽油杆柱受力分析与抽油杆柱设计。运用该模型对辽河油田一口井的超稠油双管泵下掺蒸汽井筒加热降粘效果进行了分析计算，结果表明，只要加大掺汽量或提高蒸汽干度，该项工艺可用于超稠油开采。这一结果为避免抽油杆柱的断脱提供了分析依据。
According to the theory of heat transfer and two-phase flow, a thermodynamic model was established for the heat transfer and flow of steam and liquid along the wellbore during the process of viscosity reduction and lopsided heating of the double-tube pump with super-heavy oil. The temperature distribution and pressure distribution along the wellbore between steam and liquid were calculated. The force analysis of sucker rod string and the design of sucker rod string were carried out. The model is used to analyze the effect of heating and viscosity reduction of the super-heavy oil double-tube pump in a well of Liaohe Oilfield. The results show that the process can be used for ultra-thickening as long as the amount of steam is increased or the dryness of steam is increased Oil extraction. This result provides an analytical basis for avoiding the detachment of the sucker rod.