稠油开采中注入热蒸汽时 ,套管柱除受正常应力外 ,还由于套管柱与水泥环地层热胀系数不同而产生很大的热应力。采用弹性力学的位移解法对该问题进行求解 ,得到了管柱的应力解析式 ,为进行管柱设计和选择提供了理论依据。 When hot steam is injected into heavy oil production, the casing string will not only suffer normal stress, but also generate a great thermal stress due to the different thermal expansion coefficient between the casing string and the cement ring formation. The solution of the problem is solved by elastic mechanics displacement solution, and the stress analysis formula of the pipe string is obtained, which provides a theoretical basis for pipe string design and selection.