日用化学工业（中英文）2026，Vol.56Issue(1)：48-54,7.DOI:10.3969/j.issn.2097-2806.2026.01.006
高温油藏改性纳米SiO2增效体系的制备及驱油效果研究
Preparation of a synergistic system with modified nano-SiO2 for high-temperature oil reservoirs and its oil displacement effect
摘要
Abstract
To meet the needs for nano-oil displacement agents in the development of high-temperature reservoirs,in this work,nano-SiO2 was modified with silane coupling agent dodecyltriethoxysilane.The temperature-resistant modified nano-SiO2 was optimized by using the reduction of interfacial tension as evaluation index.The modified nanomaterial was analyzed by infrared spectroscopy,and the microstructure and particle size thereof were characterized by transmission electron microscopy and dynamic light scattering,respectively.Then,a surfactant with good compatibility with modified nano-SiO2 was selected among several surfactants of different types by dispersion to construct a synergistic system.The interfacial tension and wetting ability of the constructed synergistic system were evaluated on an interfacial tensimeter and a contact angle meter.Finally,the microscopic oil displacement experiment was carried out by means of microscopic visualized displacement model.The results showed that when the reaction time was 40 h,the reaction temperature was 60 ℃,and the amount of the modifier was 16%,the oil-water interfacial tension of the modified nano-SiO2 reached 6.0817 mN/m,and the particle size of the modified nano-SiO2 was 122 nm.According to dispersibility,the surfactants HN and allyloxy polyethyleneglycol(APEG)with good compatibility with modified nano-SiO2 were selected.The test results of interfacial tension and wetting ability showed that the modified nano-SiO2/HN composite system had better performance.The modified nano-SiO2/HN system had good abilities to reduce the interfacial tension and change the water-phase contact angle under the conditions of reservoir temperature of 160 ℃ and salinity of 35 000 mg/L.The results of microscopic displacement experiments showed that the oil recovery of modified nano-SiO2/HN system was 21.1%higher than that of water flooding.This research could provide scientific support and theoretical basis for the application of this kind of synergistic system.关键词
改性纳米SiO2/表面活性剂/界面张力/润湿性/驱油效果Key words
modified nano-SiO2/surfactant/interface tension/wetting ability/oil displacement effect分类
化学化工引用本文复制引用
王黎,侯亚南,郭布民,赵健,鲍文辉,申金伟..高温油藏改性纳米SiO2增效体系的制备及驱油效果研究[J].日用化学工业（中英文）,2026,56(1):48-54,7.基金项目
中国海洋石油集团有限公司"十四五"科技重大项目(编号:KJGG2022) （编号:KJGG2022）
"海上大型压裂工程技术(编号:KJGG2022-0704)"部分研究成果 （编号:KJGG2022-0704）
