注聚井解堵技术及解堵机理研究进展

Research Progress on Plug Removal Technology and Mechanism of Polymer Injection Well

聚合物驱在油田提高采收率方面具有显著成效,但聚合物的长期注入容易造成注聚井和地层堵塞,导致注入困难、注入压力升高等问题,从而严重影响了开采效果和油井正常生产。因此,对注聚井和地层进行有效解堵非常重要。本文在总结了注聚井的堵塞机理的基础上,对注聚井解堵技术及机理进行了综合分析,对比分析了各技术的优缺点,并对其发展趋势进行了展望。

Polymer flooding has significant effects on enhanced oil recovery,while long-term injection of polymer is easy to cause blockage of injection wells and formations,resulting in difficult injection and increased injection pressure,which seriously affects the recovery and production of oil wells. Therefore,it is important to remove the plug in the injection wells and formations. This paper summarizes the plug removal technologies and mechanism of the injection wells. Finally,the development trend of plug removal technology was prospected.