本文介绍了四川地区30多年来井身结构的演变,认为目前的井身结构绝大部分是适应的,但有的还需要改革。针对深井钻探复杂情况,推荐三种新型井身结构系列供选用。在革掉套管接箍和圆扣套管的前提下,建议采用无接箍、特殊扣型套管,以提高深井的套管强度。 This paper introduces the evolution of the wellbore structure in Sichuan over the past 30 years and argues that most of the current wellbore structure is adaptable, but some still need reform. In view of the complicated situation of deep well drilling, three new types of well structure series are recommended for selection. Under the premise of dismantling the casing coupling and the round buckle casing, it is suggested to adopt a non-coupling hoop and special buckling casing to improve the casing strength of the deep well.