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根据注水井设计排量与压力，给出注水电泵机组的结构设计及参数计算步骤。通过现场实际应用表明，潜油电泵能实现分散水源注水，可完全在户外使用，一次性投资小；注水电泵工作平稳可靠、故障率低、维修次数少、维修费用低；尽管注水电泵比柱塞泵耗电量大，但柱塞泵的一次投资及维修费用、远远大于注水电泵，综合对比注水泵的经济效益明显大于杜塞泵；注水电泵可大大减少管网和水井的各种故障及费用，特别对低渗透油田及低渗透展，还可改善油层动用状况，提高产油量。
According to the design displacement and pressure of the injection well, the structural design and parameter calculation steps of the water injection pump unit are given. The field practical application shows that the submersible electric pump can realize decentralized water injection, which can be completely used outdoors and has a small investment at one time. The water pump works stably and reliably, with low failure rate, less maintenance times and low maintenance cost. Although the water pump Piston pump power consumption than the large, but a plunger pump investment and maintenance costs, far greater than the water pump, the comprehensive comparison of water injection pump significantly greater than the economic benefits of Düsseldorf pump; water pump can greatly reduce the pipe network and wells Of the various failures and costs, especially for low permeability oil fields and low permeability exhibition, but also to improve reservoir utilization, improve oil production.