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能源科学技术 示功图 At the same time ,there exist a lot of problem in the rod-pumped wells of polymer flooding compared with water flooding ,such as greater ergogram,lower pumping efficiency ,eccentric way of the sucker rod,shorten period of pumping checking and so on. 与此同时,聚驱抽油机井与水驱井相比,有诸如示功图肥大,泵效下降、抽油杆偏磨、检泵周期缩短等问题。
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