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对葡北油田开展三元复合驱室内实验研究时， 应用大庆长垣北部油田三元复合驱配方不能满足葡北的油藏条件。对此应用复合碱改善了复合体系与原油间界面张力， 使用牺牲剂降低表面活性剂在油砂上的吸附损失达４０％ 以上， 筛选出适合葡北油田的三元复合驱配方。天然岩心驱油实验结果表明： 采收率比水驱提高１８％ 以上。此复合驱技术对今后外围低渗透油田开展复合驱具有指导作用。
In the laboratory experiment of ASP flooding in Pubei Oilfield, the application of the ASP flooding formulation in the northern Daqingyuanzhang oilfield can not meet the reservoir conditions in the north of Portugal. In this case, the complex alkali was used to improve the interfacial tension between the composite system and the crude oil, and the sacrificial agent was used to reduce the adsorption loss of the surfactant on the oil sand by more than 40%. The ternary compound flooding formula suitable for the Pubei Oilfield was screened out. Experimental results of natural core flooding show that the oil recovery rate is over 18% higher than that of water flooding. This composite flooding technology has a guiding role for the future development of composite flooding in low permeability oilfields.