当今越来越多的强化采油措施使套管的工作环境不断恶化,所受的外载不断增加。现场实际情况表明,油水井投产后,套管承受的外载比完井时大的多,这是造成套管损坏的一个重要因素。因此,认真分析和研究套管损坏的各种因素和机理,改进套管设计方法,满足长期采油需要,是一个亟待解决的问题。 As more and more oil recovery measures are taken today, the working environment of the casing is deteriorating and the load on the casing is constantly increasing. The actual situation in the field shows that after the oil and water wells are put into operation, the external load on the casing is much larger than that on completion, which is an important factor for the casing damage. Therefore, it is an urgent problem to carefully analyze and study various factors and mechanisms of casing damage, to improve casing design methods to meet long-term oil recovery needs.