介绍了目前为防止套管在高压地层被挤毁而采取的多层套管设计方法,指出了存在的问题。将实体可膨胀套管技术引入到高压地层多层套管设计中,提出了几种方案,并进行了对比,给出了可行性和经济性较高的方案。最后估算了利用可膨胀套管组合套管的理论抗挤强度,结果显示组合套管的抗挤强度得到明显提高,但其效果还需试验确定。 The multi-layer casing design method currently used to prevent the casing from being crushed in the high-pressure formation is introduced, and the existing problems are pointed out. In the design of multi-layer casing of high-pressure stratum, the entity expandable casing technology is introduced, several schemes are proposed and compared, and the feasible and economical scheme is given. Finally, the theoretical crushing strength of the composite casing with the expandable casing was estimated. The results show that the crush strength of the casing is obviously improved, but the effect of the casing casing needs to be determined experimentally.