双级固井关键工艺

KEY TECHNIQUES FOR TWO STAGE CEMENTING

多级固井在深井井眼内对防止发生漏失,减少地层污染和节省水泥用量,降低环空静液柱压力和固井成本方面具有明显的优势,但同时也给固井施工带来了极大的影响和挑战,如何正确安装分级箍,选择合适的注水泥方式方法、胶塞体系等,给固井施工带来相当大的难度。为了掌握这些关键性技术,针对上述问题总结出了较好的解决方法,对双级固井施工具有一定的指导意义。

Multi-stage cementing has obvious advantages for preventing leakage,reducing pollution and saving cement content to reduce the annulus liquid column static pressure and cementing costs in the deep well,but at the same time some effects were brought in cementing operation.It's very difficulty to how to correctly install the classification hoop,select the appropriate ways to inject the cement,and rubber plug system in cementing operation.In order to master these key technologies,this article summarized a better solution for two-stage cementing operation.