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根据大庆榆树林油田注水井地层、井筒及其配套系统结垢原因 ,研制了清垢剂 (地层解堵剂 )YQG和防垢剂YFG ;针对该油田储层特点开发了运用暂堵转向技术、能控制处理强度的注水井清垢解堵工艺 ,应用该工艺和清垢剂YQG在 8口注水井进行清垢解堵试验 ,获得了良好的增注效果 ;在 13口注水井进行连续注入防垢剂YFG的长期 (1年 )防垢试验中 ,注入压力上升幅度和视吸水指数下降幅度均显著减小
According to the fouling reasons of injection wells and wellbores and their supporting systems in Yushulin Oilfield, Daqing, YQG and YFG have been developed. Using temporary plugging steering technology developed for reservoirs of this oilfield, Can control the strength of the injection well cleaning removal process plugging, the process and cleaning agent YQG in 8 wells injection cleaning descaling test, obtained a good effect of injection; injection wells in 13 continuous injection In the long-term (one year) scale inhibitor test of the detergent YFG, both the increase in injection pressure and the decrease in apparent water absorption index were significantly reduced