【摘要】 采用自制耐高温降黏剂SP对河南特稠油进行乳化降黏,研究了SP降黏的操作条件、促进剂对降黏的影响、SP的普适性及现场加剂方式对其降黏效果的影响。结果表明,SP在乳化剂水溶液中的质量分数为0.05%、乳化温度70℃～80℃、m(水)∶m(油)=30∶70～40∶60、乳化时间3 min～9 min的条件下,25℃时使河南特稠油1#黏度由202.7 Pa.s降至其乳状液黏度低于34.2 mPa.s,降黏率均达99%以上。实验还表明,高温(260℃～300℃)处理前后SP对河南特稠油的降黏效果比较稳定,降黏率都达到99%以上。更多还原

【Abstract】 The emulsifying viscosity-reduction of extra-viscous crude oils from Henan Oilfield was carried out by using self-prepared high-temperature-resisting viscosity-reducer SP.The applicability of SP as well as effects of operating conditions,the action of accelerator on viscosity-reduction,and method for applying the viscosity reducer at the oilfield cite on the result of viscosity-reduction were investigated.The results showed that,under the conditions as:concentration of SP in emulsifier aqueous solution as 0.05%(mass fraction);emulsifying temperature as 70 ℃～80 ℃,m(H2O)∶m(oil)=30∶70~40∶60 and emulsifying time 3 min～9 min;a sample of extra-viscous oil 1# which has viscosity at 25 ℃ of 202.7 Pa·s can be reduced to less than 34.2 mPa·s with over 99% of viscosity reduction rate.Experimental results also showed that the viscosity reduction effect on extra-viscous oils from Henan Oilfield of SP before and after high-temperature(260 ℃~300 ℃)processing was relatively stable and only a little change occurred,both of the viscosity reduction rates of which reached over 99%.更多还原