三层带水泥偏心套管一次切割及回收工艺技术应用

One-time Cutting and Recycling Technology of Three-layer Eccentric Casing with Cement

三层带水泥偏心套管一次切割及回收工艺技术打破了传统的切割、套铣、打捞单层套管作业思路,大大节省作业工期,并有效降低了套铣作业风险。结合南海WZ11-4D平台所有生产井水力切割套管成功的现场经验,讨论和总结了在偏心带水泥的情况下的套管一次切割及回收工艺的应用实践,并就如何判断是否成功切割套管的方法和现象进行了阐述。

Combined with the successful field experience of hydraulic casing cutting in all production wells of South China Sea wz11-4d platform,this paper discusses and summarizes the application practice of casing one-time cutting and recovery process under the condition of eccentric cement,and expounds the methods and phenomena of how to judge whether the casing is successfully cut.