根据大庆油田三元复合驱采出水中碳酸盐过饱和而导致的胶态碳酸盐微粒析出,悬浮固体含量增大,处理后采出水中悬浮固体含量超标的实际问题,研制基于螯合机理的水质稳定剂以抑制采出水中新生矿物颗粒生成。在大庆油田北二西弱碱三元复合驱、喇北东块强碱三元复合驱开展了水质稳定剂现场应用试验,试验验证投加水质稳定剂处理后采出水悬浮固体含量达到20mg/L的含聚污水回注高渗透率油藏的控制指标。 According to the fact that the carbonate particles in the water produced by the ASP flooding in Daqing Oilfield are precipitated, the colloidal carbonate particles are precipitated, the content of suspended solids is increased, and the suspended solids content in the produced water after the treatment is excessive, a mechanism based on the chelation mechanism Of water quality stabilizer to inhibit the formation of nascent mineral particles in the produced water. In the Daqing oilfield North Second West weak base ternary compound flooding, Laibei East strong alkali ternary compound flooding carried out on-site application of water stabilizer test, the test proved that adding water quality stabilizer after the removal of water-suspended solids content of 20mg / L Of the control index containing polymer wastewater injection high permeability reservoir.