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

摘要： 为了给强碱三元复合驱技术决策提供依据,以喇嘛甸油田取样井的采出液为研究对象,分析了强碱三元复合驱采出液药剂加量与黏度和界面张力间的关系,探索了强碱三元复合体系段塞黏度对采出液药剂加量和色谱分离程度的影响。结果表明,随取样井储层渗透率增加,采出液中碱、表面活性剂质量分数和聚合物质量浓度呈现“先升后降”变化趋势。随采出液聚合物质量浓度增加,黏度增加,界面张力升高。随采出液碱和表面活性剂质量分数增加,黏度减小,界面张力降低。分析表明,强碱三元复合驱过程中存在比较严重色谱分离现象。通过提高三元复合体系黏度可以减弱色谱分离现象,进而改善三元复合驱增油效果。

关键词: 大庆喇嘛甸油田, 采出液检测, 机理分析