关键词: 大庆喇嘛甸油田, 采出液检测, 机理分析

Abstract: In order to provide a basis for decisionmaking on improving the effect of ASP flooding with strong base, this paper carried out the research on the relationship of produced liquid reagent concentration and its viscosity to interfacial tension, through taking Lamadian oilfield produced fluid of ampling wells as research object. And this paper also explored the effect of ASP system slug viscosity to produced liquid reagent concentration and chromatographic separation degree. The results showed that with the increasing of the sampling wells permeability in reservoir, the produced liquid concentration of alkali, surface active agent and polymer present "first rising and then falling" change trend. With the concentration increasing of polymer in produced liquid, its viscosity and interfacial tension gradually increased. With the concentration increasing of alkali and surface active agent in produced liquid, its viscosity and interfacial tension gradually reduced. By analysis of the produced liquid concentration, there is a more serious phenomenon of chromatographic separation during the process of ASP flooding with strong base. Throngh enhancing the viscosity of ASP system, it can weak the separation of chromatographic separation, which can improve the oil encreasement effect of ASP flooding.

Key words: Lamaidan oilfield in Daqing, Produced liquid detection, Mechanism analysis