本文根据油田开发中的大量事实指出,大量套管的损坏,其主要原因之一是套管设计中未考虑围岩压力的影响。本文在我们以前工作的基础上,根据岩体力学理论,用塑性理论和地质力学观点阐述了井壁围岩压力的形成和发展过程以及井壁围岩的稳定性与软弱夹层和注水的关系等,并针对围岩压力问题,提出了防治套管损坏的途径。 Based on a large number of facts in oilfield development, this paper points out that one of the major causes of casing damage is the failure of casing design to account for the effect of surrounding rock pressure. Based on our previous work, based on the theory of rock mass mechanics, this paper expounds the formation and development of surrounding rock pressure and the relationship between the stability of surrounding rock and the weak interlayer and water injection based on the theory of plasticity and geomechanics Aiming at the problem of surrounding rock pressure, the ways of preventing casing damage are proposed.