盐层具有流变特性,由于盐层的蠕变会使套管产生一个非常大的非均匀外挤力,使得盐层是套管危险最大的地层。通过取自中原油田盐层的蠕变试验,建立了盐层流变方程,同时分析了套管在非均匀地应力作用下的套管外载及套管在非均匀外载作用下套管的抗外挤强度,并对盐层套管使用寿命进行了分析计算;计算精度可达80％。 The salt layer is rheological and due to the creep of the salt layer, the casing produces a very large, non-uniform outer squeezing force that makes the salt layer the most dangerous casing. Based on the creep test taken from the salt layer of Zhongyuan Oilfield, the rheological equations of salt formation were established. The casing external loads under the non-uniform stress of the casing and the influence of the casing under the non-uniform external load Anti-extrusion strength, and the salt casing life analysis and calculation; calculation accuracy of up to 80%.