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用有限元法计算了热采井在首次注蒸汽后井筒及周围水泥环和岩石中的应力分布，并分析热采井套管损坏的主要原因，为防治热采井套管损坏提供理论依据
The finite element method was used to calculate the stress distribution of thermal recovery well in wellbore and surrounding cement sheath and rock after steam injection for the first time and to analyze the main causes of thermal casing damage and provide a theoretical basis for preventing casing damage in thermal recovery well