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针对低渗透油田采出水处理中常规精细过滤出水不能稳定满足回注水水质要求的问题,提出了在现有预处理技术的基础上,利用超滤替代精细过滤。结果表明,经过超滤装置处理后出水含油量平均为0.13 mg/L,悬浮物含量平均为0.67 mg/L,悬浮物固体直径中值平均为0.85μm,出水水质较好,且跨膜压差未出现明显增长。经计算,装置的运行费用约为0.3元/m~3。可见,该工艺具有较强的适应性和明显的技术优势。
In view of the problem that conventional fine filtration effluent can not meet the requirements of injection water quality in the production of low permeability oilfield, it is proposed to use ultrafiltration instead of fine filtration based on the existing pretreatment technology. The results showed that the average water content of the effluent was 0.13 mg / L, the average content of suspended solids was 0.67 mg / L, the median diameter of suspended solids was 0.85 μm, the effluent quality was better and the transmembrane pressure difference No significant growth. After calculation, the operation cost of the device is about 0.3 yuan / m ~ 3. Can be seen that the technology has strong adaptability and obvious technical advantages.