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针对水驱稠油油藏特点及开发现状,研制新型高效降粘体系SLJN,以胜利原油对该体系的油水界面张力、抗矿化度等性能进行研究。结果表明SLJN水溶液浓度0.5%时与实验油样界面张力可低至10-2,对胜利普通稠油SLJN用量0.5%均可实现有效降粘。SLJN体系可耐矿化度50000mg/L,能够应用于普通油藏及高盐油藏。SLJN体系可明显提高水驱驱替效率。
In view of the characteristics and development status of the waterflooding heavy oil reservoir, a new type of high efficiency visbreaking system SLJN was developed. The oil-water interfacial tension, anti-salinity and other properties of the system were studied with Shengli Crude Oil. The results show that the interfacial tension between SLJN aqueous solution and experimental oil sample can be as low as 10-2 at the concentration of 0.5% and effectively reduce the viscosity by 0.5% SLJN. SLJN system can tolerate salinity 50000mg / L, can be applied to ordinary reservoirs and high salt reservoirs. SLJN system can significantly improve the water flooding displacement efficiency.