日用化学工业（中英文）2026，Vol.56Issue(2)：169-175,7.DOI:10.3969/j.issn.2097-2806.2026.02.004
高温高盐油藏纳米SiO2稳定乳状液调驱体系构建与性能研究
Construction and performance evaluation of a profile-control and flooding system based on nano-SiO2 stabilized emulsion for high-temperature and high-salinity heavy oil reservoirs
摘要
Abstract
To address the technical challenges of poor thermal stability and inadequate mobility control for using profile-control and flooding systems based on emulsions in high-temperature and high-salinity heavy oil reservoirs,in this work,a novel temperature-and salt-resistant nanoparticle-stabilized emulsion system was constructed for profile control and flooding,in which nano-SiO2 particles were modified by using lauramidopropylamine oxide(OA).The experimental results showed that,when the modification was carried out at an OA content of 0.05%,the constructed emulsion system exhibited good environmental adaptability,maintaining stability for over 30 days under harsh conditions of 90℃and of salinity of 2×105 mg/L.Rheological characterization showed that the system had obvious shear-thinning behavior with a viscosity recovery reaching 85.4%.Dynamic rheological analysis confirmed that the three-dimensional network structure formed by nanoparticles in aqueous phase was the key factor endowing the system with characteristics of elastic fluids.Core flooding experiments verified the excellent plugging performance of this system across a wide permeability range(50×10-3-3 500×10-3 μm2,with resistance factor>80).Particularly in heterogeneous parallel-core experiments with permeability contrast of 4,the oil recovery was increased by 30.2%,the fractional flow rate was improved by over 40%,and both sweep efficiency and ultimate oil recovery were significantly enhanced.关键词
高温高盐油藏/纳米SiO2改性/乳状液调驱/流变特性/提高采收率Key words
high-temperature and high-salinity reservoir/modified nano-SiO2/emulsion flooding/rheological property/enhanced oil recovery分类
化学化工引用本文复制引用
史树彬..高温高盐油藏纳米SiO2稳定乳状液调驱体系构建与性能研究[J].日用化学工业（中英文）,2026,56(2):169-175,7.基金项目
中国石化科技攻关项目"压驱井组窜流防治关键工艺技术研究"(P24030) （P24030）
