调驱一体化泡沫驱油体系配方优化研究

Formulation optimization for foam flooding system with performances of profile control and oil displacement

针对大港港东油藏条件,通过系列甜菜碱的泡沫性能、油水界面张力性能测试,筛选出芥酸酰胺丙基甜菜碱作为主剂,与十二烷基磺酸钠等复配研制出调驱一体化泡沫驱油体系。测试结果表明,对于大港港东原油和模拟矿化水,发泡体积可达溶液体积的5倍,油水界面张力可达10-2m N/m数量级水平,能够满足调驱一体化泡沫驱油体系的要求。

According to the eastern reservoir conditions of Dagang Oilfield,erucic acid amide propyl betaine is selected as the main agent by measuring foam properties and oil water interfacial tension of various betaines.Then a foam flooding system is developed by the combination of erucic acid amide propyl betaine and sodium dodecyl sulfonate,which possesses simultaneously performances of profile control and oil displacement.Test result shows that taking crude oil produced from the eastern reservoir in Dagang Oilfield and simulated mineralized water as objects,the foam flooding system can make foam volume reach five times the volume of the solution and bring oil water interfacial tension to reach10-2 m N·m-1,which can meet the requirements of foam flooding system with performances of profile control and oil displacement.