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靖边油田注水井较多,且注入水的水质不稳定,随着注水时间的增长,部分注水井井底造成严重污染,需要采取解堵技术解除井底堵塞。从确定技术措施、施工工艺要求、酸化反应期间井口压力变化和施工后注水压力、注水量变化对2012年解堵的注水井进行效果评价,分析影响酸化效果的因素,确定最佳酸化效果。
There are more water injection wells in Jingbian Oilfield, and the quality of injected water is not stable. With the increase of water injection time, some water injection wells cause serious pollution at the bottom of the well, which needs to be removed by plugging technology. From the determination of technical measures, construction process requirements, well head pressure changes during the acidification reaction and the change of water injection pressure and water injection after the construction, the effect of the plugging injection well was evaluated in 2012, and the factors influencing the acidification effect were analyzed to determine the optimum acidification effect.