本文叙述了套管在静水外压作用下,以可能出现的塑性破坏;弹塑性失稳;丧失弹性稳定三种破坏形式为出发点,对目前应用的套管抗挤强度计算,作了比较详细的分析与推导。文章指出了萨尔奇索夫公式从其原始假定到推演的过程中,存在的错误。关于目前套管抗挤强度理论的一些进展,又作了简要说明。 This paper describes the casing under hydrostatic pressure under the action of possible plastic failure; elastoplastic instability; loss of flexibility and stability of the three forms of damage as a starting point for the current application of casing extrusion crushing strength, made a more detailed Analysis and derivation. The article points out the errors existing in Saltzov’s formula from its original assumption to its deduction. On the current casing extrusion resistance theory some progress, but also made a brief description.