采出井结垢是三元复合驱技术面临的主要问题之一,常规抽油泵因井筒结垢检泵周期大幅度降低,导致生产成本居高不下。针对这一问题,从抽油泵结构上进行改进,研制了一种新型防垢抽油泵:增加了刮垢环,减缓柱塞结垢速度;增设沉垢通道,减低卡泵几率。现场应用5口井,检泵周期由68天延长到175天,取得了良好的试验效果。 Production well scaling is one of the major problems faced by ASP flooding technology. The conventional pumping pump greatly reduces the pumping cycle due to the fouling of the wellbore, resulting in high production costs. To solve this problem, a new type of anti-scale oil pump has been developed from the structure of the oil pump. The anti-scale oil pump has been developed to increase the scaling rate of the plunger and reduce the rate of scaling of the plunger. Field application of 5 wells, pump cycle was extended from 68 days to 175 days, and achieved good results.