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用静态吸附方法研究三元复合驱油体系中羧酸盐,复碱和聚合物在地层温度(68℃)下和各种不同条件的吸附损耗.从复合体系和单一体系来看,天然羧酸盐,复碱和聚合物吸附量都有所减少,说明它们之间起着相互抑制吸附的作用.但是,盐的加入正相反可使吸附量增加.该吸附研究可对三次采油提供可靠依据.
The static adsorption method was used to study the adsorption loss of carboxylates, complex bases and polymers under the formation temperature (68 ℃) and various conditions in the ASP flooding system. From the composite system and a single system point of view, the natural carboxylate, complex alkali and polymer adsorption decreased, indicating that they play a role in mutual inhibition of adsorption. However, the addition of salt, on the contrary, increases the amount of adsorption. The adsorption study can provide a reliable basis for tertiary recovery.