石油化工2024，Vol.53Issue(4)：545-552,8.DOI:10.3969/j.issn.1000-8144.2024.04.010
纳米N-A降黏剂的制备及性能评价
Preparation and performance evaluation of nano N-A viscosity reducer
摘要
Abstract
Aiming at the problems of poor viscosity reduction effect and low oil washing efficiency of common nano-viscosity reducer for extra-heavy oil,the nano N-A composite viscosity reducer was prepared.The microstructure of the viscosity reducer was characterized by FTIR and TEM.The viscosity reduction effect,the ability to reduce interfacial tension and the oil washing efficiency of the viscosity reducer were investigated.The experimental results show that the composition of N-A viscosity reducer is 50%(w)nano silica sol+40%(w)dispersant EB-1+4.2%(w)surface modifier+ 5.8%(w)synergist.The viscosity reducer has good dispersion performance.The particle size distribution of the viscosity reducer is between 20-60 nm.Under the conditions of viscosity reducer content 1%(w),oil-water mass ratio 7∶3,After aging for 48 h at 200℃and salinity 0 or 8 829.26 mg/L,and aging time 48 h,the viscosity of the extra-heavy oil after viscosity reduction is 6 280,7 213 mPa·s,and the viscosity reduction rates is 83.77%and 81.36%,respectively.The retention rate of viscosity reduction performance of the system is 96.80%and 95.39%,respectively.After standing at 50℃for 90 d,the retention rate of viscosity reduction performance is greater than 90%,the oil-water interfacial tension is reduced to 0.076 mN/m,the maximum particle size of the emulsified droplet is 9.5 μm and the washing efficiency is 30.9%.Compared with the common viscosity reducer,the recovery rate can be increased by 22.3 percentage points.关键词
纳米材料/特稠油/降黏剂/表面活性剂Key words
nano material/extra heavy oil/viscosity reducer/surfactant分类
能源科技引用本文复制引用
宋宏志,王少华,孙玉豹,汪成,龚页境,李岗..纳米N-A降黏剂的制备及性能评价[J].石油化工,2024,53(4):545-552,8.基金项目
国家自然科学基金项目(52074038) （52074038）
中国海洋石油集团有限公司三新三化项目(KJSS-2022-007). （KJSS-2022-007）
