RESEARCH PROGRESS ON TREATMENT TECHNOLOGY OF REFRACTORY POLYMER-CONTAINING OILFIELD PRODUCED WATER
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摘要: 含聚采出水具有水质复杂、黏度大、乳化程度高、含油量高等特点,导致油水分离困难,对油田生产作业和环境带来严重影响。分析了含聚采出水的水质特性,对国内外含聚采出水处理技术进行了总结,如膜分离法、气浮法、高级氧化法、微生物法等,阐述了这些处理技术在油田的应用情况及存在的问题。简要说明了含聚采出水处理工艺及橇装一体化水处理装置开发问题,对今后的含聚采出水处理技术的研究进行了展望,以期为该类污水处理技术的研究和工程应用提供参考。Abstract: Produced water containing polymer has the characteristics of complex water quality, high viscosity, high degree of emulsification, and high oil content, which causes difficulty in oil-water separation and has serious impacts on oilfield production operations and the environment. This study analyzed the water quality characteristics of the polymer-containing produced water, and summarized the treatment technologies of the polymer-containing produced water, such as membrane separation method, air flotation method, advanced oxidation method, microbial method, etc., and explained the application of these treatment processes in various oil fields. The advantages and problems of various treatment technologies were described. This study also introduced the treatment technologies of polymer-containing produced water and the development of skid-mounted integrated water treatment equipment. Finally, some prospects were put forward for future research of polymer-containing produced water treatment technology, hoping to provide reference for the researches and engineering application of the sewage treatment technology.
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Key words:
- oilfield produced water /
- sewage treatment /
- polymer flooding /
- oil-water separation
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