为了更好地利用水平井技术开采稠油，利用热工水力学方法建立了水平井的数学模型，并将其与三维油藏热采数学模型相耦和，研制出了水平井热力采油的数学模型。实际油藏的计算结果表明，该模型与一般的等压线源模型相比，能更真实地反映水平井的动态特性，并能对水平井井长、吞吐周期、射孔位置等进行优选，为利用水平井技术开采稠油提供更可靠的理论依据。 In order to make better use of horizontal well technology to exploit heavy oil, a mathematical model of horizontal well was established by means of thermal hydraulics, and coupled with the mathematical model of thermal recovery of three-dimensional reservoir, the mathematics of horizontal well thermal recovery model. The calculation results of actual reservoirs show that the model can reflect the dynamic characteristics of horizontal wells more faithfully than the general isobaric source model, and can optimize the horizontal well length, the throughput cycle and perforation location, It provides a more reliable theoretical basis for the exploitation of heavy oil by horizontal well technology.