摘要
针对某油藏A区块,利用阴离子/两性表面活性剂的协同作用,进而达到油水超低界面张力,且两性表面活性剂十二烷基甜菜碱在浓度为0.1%~0.5%的范围内,降低油水界面张力的效果达到10^(-2) mN/m数量级,在加入阴离子表面活性剂的条件下,复配体系可以使油水界面张力达到超低界面张力。通过探讨表面活性剂的总浓度以及复配比对油水界面张力的影响,最终得到阴离子/两性表面活性剂复配体系可在较高矿化度和较低的浓度(0.4%)范围内达到10^(-3) mN/m的超低界面张力,并在此基础上对两者的协同作用进行分析。
The synergistic effect of anionic/amphoteric surfactants was used in A reservoir to achieve ultra-low interfacial tension of oil and water. And the concentration of the amphoteric surfactant dodecyl betaine was in the range of 0.1% to 0.5%, the effect of reducing the interfacial tension of oil and water reached to 10^（-2） mN/m magnitude order, in the case of adding anionic surfactants, the complex system achieved ultra-low interfacial tension of oil and water. The effect of the total concentration of surfactants and the compound ratio on the interfacial tension of oil and water was studied. The synergistic effect of two kinds of surfactant was analyzed. The results show that the anionic/amphoteric surfactant complex system can be used under high salinity and low concentration（0.4%） to achieve 10^（-3） mN/m ultra-low interfacial tension.
出处
《当代化工》
CAS
2017年第7期1329-1332,共4页
Contemporary Chemical Industry
