注水系统效率影响因素分析与对策

注水系统效率是一项反映油田注水系统地面工程综合性经济技术指标,注水系统效率的高低直接影响着原油生产能耗的高低。从目前的情况来看,影响注水站效率的原因:一是小排量离心泵机组效率低;二是设备设计能力与实际生产能力不匹配,设备运行工况达不到较好的水平。在管网效率方面,受到了阀控损失影响和管线压降损失影响。针对这种情况,提出解决方案:一是将离心泵机组更换为柱塞泵机组;二是进行注水泵拆级改造;三是实施分压注水调整改造,降低阀控损失;四是实施注水管网改造,减少管道摩擦阻力损失;五是实现污水就地回注或回罐,降低输水能耗。

On the Factors Affecting Water Flooding System Efficiency and the Solutions

Water flooding system can reflect the economic and technical norms of oil field water flooding ground project.Its efficiency directly affects the energy consumption of oil production.As seen from now,there are two factors undermining water flooding efficiency： first is the low efficiency of small displacement centrifugal pump set;second is equipment＇s failure to achieve full capacity due to the incompatibility between the designated capacity and the actual productivity.Meanwhile the pipe network＇s efficiency is undermined by the loss in valve regulation and pipe pressure drop.There are five methods to tackle this problem： first is to replace the centrifugal pump set with plunger pump set;second is to renovate injection pump stage by stage;third is to adjust water injection under different pressures in order to reduce loss during valve monitoring;fourth is to revamp injection pipe networks so that the loss caused by pipe friction can be decreased;last is to realize on-site sewage recovery to cut energy consumption during water delivery.