作者介绍了一种修复非常规井套管故障的成功替代方案，该方案允许水力压裂连续性来完成原始压裂计划，并将整个油井生产寿命中的井完整性状况视为主要干预目标。由此产生的井产量高于着陆区的预期估计最终采收率（EUR）。
2020年12月，Vaca Muerta非常规页岩油藏三井平台进行水力压裂时，其中一口井突然发生环空连通。该事件发生在计划的 33 个压裂阶段的第九阶段执行期间。
在对该事件进行彻底的压力分析并验证所有压力屏障均正确且到位后，决定停止该井的压裂处理，并完成该平台其他两口井的待定压裂阶段，直到问题得到充分理解并解决找到了解决方案。
在第一台压裂泵之前，通过在 13,000 psi 下进行的套管完整性测试 (CIT) 验证了井屏障的初始良好状况。最大处理压力保持在 CIT 压力以下，并以可接受的安全系数裕度维持井与环空连通，并持续进行压力监测。
一旦压裂车队完成干预并离开平台，完井工程的重点就是确定套管泄漏的位置和几何特征。
The authors introduce a successful alternative for repairing casing failures on an unconventional well that allows hydraulic fracture continuity to accomplish the original fracturing plan, considering well-integrity conditions throughout the entirety of well production life as the main intervention objective. The resulting well production was higher than the expected estimated ultimate recovery (EUR) for the landing zone.
In December 2020, during the execution of hydraulic fracturing on a three-well pad in the Vaca Muerta unconventional shale reservoir, an annular communication suddenly occurred in one of the wells. This event took place during the execution of the ninth fracturing stage of 33 planned.
After a thorough pressure analysis of this event and verification that all pressure barriers were correct and in place, it was decided to stop fracturing treatments in this well and complete pending fracturing stages in the other two wells of the pad until the problem was well understood and a solution was found.
The initial good condition of the well barrier was verified by a positive casing-integrity test (CIT) at 13,000 psi before the first fracturing pump. Maximum treatment pressure was kept under the CIT pressure, with an acceptable safety factor margin maintaining the well with annular communication, and was continuously pressure monitored.
Once the fracturing fleet finished the intervention and left the pad, the engineering focus of the completion was oriented to determine the location and geometric characteristics of the casing leak.
