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稠油热采过程中热影响区域分析 摘 要 针对稠油热采过程中注入大量高温蒸汽而造成井筒部分热损失难以控制的问题，从热工角度初步分析了高温蒸汽在井筒部分的传热过程，建立了井筒及周围地层部分的二维、瞬态传热数学模型，根据所求得的温度场以及定量热损失经验公式，探讨了隔热油管视导热系数和蒸汽温度对单位长度井筒热损失的影响。研究表明井筒单位长度热损失随着隔热油管视导热系数和蒸汽温度的增加而增加，且隔热油管视导热系数对井筒单位长度热损失的影响更大。， 关键词：视导热系数；；热损失ANSYSAnalysis of Heat Affected Zone during the Thermal Recovery Process Abstract For the purpose of reducing the heat loss in the mineshaft during the steam injection process, a two dimension, unsteady state heat transfer model of the mineshaft and surrounding soil was established and then the temperature field was obtained. Base the Heat loss experience formula, the apparent heat conductivity and steam temperature to heat loss per length of the mineshaft influence were discussed. The results shown that the heat loss per length of the mineshaft increased with the apparent heat conductivity and steam temperature increase, furthermore, the apparent heat conductivity affected larger than that of steam temperature. High temperature and high pressure steam flows through the wellbore segment backward, such as the reservoir section, the steam through the perforation into the reservoir, and reservoir mass and heat transfer, and thus the formation of a reservoir heat-affected zone is build. Using the finite element analysis software ANSYS, a thermal recovery wellbore, formation and reservoir part of the two non-steady-state mathematical model of Liaohe was build, and simulation Analysis of the temperature field of the reservoir and surrounding strata was made, and the relationgship between the time of steam injection and the reservoir heat-affected zone was discussed. The studys have shown that: at first,reservoir heat-affected region increased with the increase of the steam injection time, and then kept unchang, the time of steam injection in 3 to 5 days was the best. Key words: thermal conductivity; steam temperature;heat loss;heat affected zone;ANSYS 目 录 1 绪论 1 1.1 目的意义 1 1.2 国内外的研究现状 2 1.2.1 井筒热损失的研究 2 1.2.2 油层热影响区域的研究 3 1.3 本文的研究内容及创新