针对全国油层套管大量损坏这一事实,本文将粘弹性理论引入套管围压的分析中,利用弹性—粘弹性相应原理,计算了粘弹性围岩中套管围压的大小,分析了油井工作状况及时间变化对套管围压的影响,得到了许多有益的启示。通过和有关文献对比表明,本文的计算简捷易行,结论和实际情况相符。 In view of the fact that a large amount of casing casing is damaged in the whole country, this paper introduces the theory of viscoelasticity into the analysis of casing confining pressure, calculates the casing confining pressure in viscoelastic surrounding rock by using the corresponding principle of elasticity and viscoelasticity, The influence of working conditions and time on casing confining pressure has obtained many beneficial enlightenments. Comparing with the related literature shows that the calculation in this paper is simple and easy, and the conclusion is consistent with the actual situation.