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聚合物驱三次采油过程中,注聚井堵塞问题日益突出,主要表现是:注入压力高、达不到配注、间歇注入等,严重影响聚驱效果。注聚井解堵增注技术分析了聚驱注入井注入压力上升的主要原因及注聚井堵塞规律、并根据注聚井近井地带堵塞物的成分,减少注聚井解堵后因聚合物再吸附而重新堵塞,研究了注聚井油层保护技术。
During the tertiary recovery of polymer flooding, the problems of plugged well in injection well have become increasingly prominent. The main problems are: high injection pressure, injection failure and intermittent injection, which seriously affect the flooding effect. The main reason of injection pressure increase and the blockage of injection well are analyzed. According to the composition of blockage near injection well, the effect of polymer injection Re-adsorption and re-plugging, research polymer injection well reservoir protection technology.