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在油田生产中,潜油电泵个别井结垢严重,造成电泵井过载运行机组损坏。垢样含水0.74%、含酸溶物53.81%、有机物29.60%、酸不溶性杂质19.85%。针对结垢原因研制了电泵井清防垢剂,主剂为无机有机混合酸,添加了防垢剂、表面活性剂、助溶剂、缓蚀剂、络合剂、稳定剂等。该清防垢剂与地层原油配伍性好,同10%HCI对比溶蚀率和反应速度均有较大提高。现场试验2口井,平均检泵周期由146天延长到669天,延长了523天,取得了很好的效果。
In oilfield production, submersible oil pump serious scaling of individual wells, resulting in damage to the pump unit overload operation. Scale-like water 0.74%, acid-soluble 53.81%, organic 29.60%, acid-insoluble impurities 19.85%. Aiming at the cause of scaling, the electric pump well anti-fouling agent was developed. The main agent is inorganic-organic mixed acid, anti-scaling agent, surfactant, cosolvent, corrosion inhibitor, complexing agent and stabilizer are added. The anti-fouling agent and formations of crude oil compatibility, with 10% HCI contrast corrosion rate and reaction rate have greatly increased. Field test 2 wells, the average pump cycle was extended from 146 days to 669 days, an extension of 523 days, and achieved good results.