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研究了电缆及电热杆油井温度场分布。提出利用简便、易行的热阻热容算式取代传统使用的有限差分法来离散建立的数学模型。模拟研究中，综合考虑了热传导、对流换热、热辐射等传热方式，并根据现场实际情况将导热系数、液体密度、比热等热物性参数当作变量处理。结合油田矿场1口油井实例，模拟出了油井的温度分布，确定了蜡凝固点的位置，优选出了自控电缆的功率大小及下入深度。模拟结果和现场实测结果比较吻合。
The distribution of temperature field in cable and electric rod wells was studied. The mathematical model discretely established by using the traditional finite difference method is proposed, which is simple and easy to use. In the simulation study, the heat transfer modes such as heat conduction, convection heat transfer and heat radiation are comprehensively considered. According to the actual situation in the field, the thermal properties such as thermal conductivity, liquid density and specific heat are treated as variables. Combining with an oil well in an oilfield, the temperature distribution of the oil well was simulated and the location of the wax solidification point was determined. The power of the self-controlled cable and the depth of entry were optimized. The simulation results are in good agreement with the field measurements.