聚合物驱新型不压井工具的研制

New pressure balancing tools for polymer injection.

针对常规不压井工艺在聚合物驱油井作业时 ,存在作业成功率低、施工工序复杂以及对断杆作业井不能压井等问题 ,研制了高强度脱接堵塞器和泵塞活门等新型不压井工具。高强度脱接堵塞器具有脱接器和堵塞器的功能 ,常规作业不增加起下管柱次数 ;它可采用上提抽油杆柱的方式封隔油管通道 ,起到压井的作用 ,从而可避免杆式开关或活门压井中的扭簧失效问题。泵塞活门安装在泵筒与泵固定阀连接处 ,不影响其它配套技术的应用 ,可取代常规的泵上、泵下活门 (或开关 ) ;与油管锚定装置结合使用 ,可替代下丢手管柱加开关的工艺技术 ;在抽油杆断脱的情况下 ,能自动关闭油管通道 。

In the light of low success rate and complicated operation of conventional pressure balancing technology for polymer flooding, new snubbing tools, the high-strength connecting-tripping blank plug and the downhole switch valve, are developed. The structure and operating principle of these new tools are described, and their performance and characteristics are introduced.