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通过对垂直井、斜直井井筒温度分布规律的研究，推导出水平井注蒸汽热采时井筒温度分布的理论模型，并进行了解析求解，依据油品性质（包括地层热物性参数），计算出了不同产量、含水量，不同油层条件下的井筒温度分布，从而确定出油井在不同条件下的加热深度。
Based on the research on temperature distribution law of vertical borehole and inclined borehole, the theoretical model of wellbore temperature distribution in horizontal well during steam injection is derived and solved analytically. Based on the properties of oil product (including the thermal parameters of formation) Different production, water content, wellbore temperature distribution under different reservoir conditions, so as to determine the oil well depth of heating under different conditions.