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在含砂稠油油井的开采中,深井泵的损坏相当严重。实践证明,这种损坏是由砂粒的磨损和腐蚀共同作用的结果,其中最主要的是磨料的磨损。据统计,含砂与不含砂油井相比,前者因深井泵的失效而使修井的次数增加了一倍,购置深井泵的费用明显增加,影响油井正常生产,产量大幅度下降,经济损失不可低估。 目前,在深井泵的修理中,往往只重视衬套的修复,而忽视柱塞的修复,主要原因是修复难度大,缺乏适当的修复技术,没有完善的修复工艺措施。实际上,柱塞的价格约占整台泵的50％,修好一个柱塞比购买一个新柱塞可节约费用16.7％,而修好一个衬套只能节约费用6.7％～10％,可以看出,柱塞的修复比衬套的修复更有价值,应给予高度重视。
In the exploitation of sand-containing heavy oil wells, deep well pumps are severely damaged. Practice has proved that this damage is caused by the joint action of sand abrasion and corrosion, the most important of which is abrasive wear. According to statistics, compared with non-sand-containing oil-bearing wells, the former has doubled the number of workover wells due to the failure of deep-well pumps. The cost of purchasing deep-well pumps has obviously increased, affecting the normal production of oil wells, with a sharp drop in output and economic losses Can not be underestimated. At present, in the deep well pump repair, often only pay attention to the bushing repair, and ignore the plunger repair, the main reason is the difficulty of repair, the lack of appropriate repair techniques, there is no perfect repair process. In fact, the price of the plunger is about 50% of the total pump. Repairing a plunger can save 16.7% of the cost of purchasing a new plunger, while repairing one can only save 6.7% -10% of the cost, as can be seen , The repair of the plunger is more valuable than the repair of the bushing, which should be given high priority.