中国石油大学学报（自然科学版）2025，Vol.49Issue(3)：141-148,8.DOI:10.3969/j.issn.1673-5005.2025.03.015
盐水中聚合物基纳米材料/蠕虫胶束复合体系剪切诱导特性
Shear induction characteristics of polymer-based nanomaterials/worm micelles composite system in brine
摘要
Abstract
Aiming at the defects of conventional drag reducer,such as deteriorating heat transfer performance,poor salt tol-erance and low drag reduction efficiency,a polymer-based nanomaterial(PAM-AMPS/Fe3 O4 NPs)combined with worm mi-celle fluid(CTAC/NaSal)was proposed for brine pipe drag reduction.The effects of concentration,temperature and salinity on the induced shear properties of CTAC/NaSal and PAM-AMPS/Fe3 O4 NPs were studied.The results show that the CTAC/NaSal fluid of 70-500 mg/L can produce induced shear structure(SIS),and the shear rate ranges from 101 to 102 s-1.How-ever,the SIS of the fluid disappears when the brine exceeds 800 mg/L and shows poor salt tolerance.SIS appears in 20-50 mg/L PAM-AMPS/Fe3 O4 NPs fluids,and the shear rate ranges from 102 to 103 s-1.SIS still occurs in 20 000 mg/L saline.The composite fluid of 10-40 mg/L PAM-AMPS/Fe3 O4 NPs and 100 mg/L CTAC/NaSal shows two shear thickening phe-nomena in the range of 101-103 s-1,and the peak value is greater than that of CTAC/NaSal fluid or PAM-AMPS/Fe3 O4 NPs fluid alone.Because PAM-AMPS/Fe3 O4 NPs contain nanoparticles and temperature-resistant and salt-resistant PAM-AMPS polymer molecules,it can form a micro-crosslinked structure with stable and dense characteristics when compounded with CTAC/NaSal fluid,which makes the SIS range of the composite fluid wider and the peak value larger,showing obvious syn-ergistic effect.SIS still exists in the composite fluid under the condition of 20000 mg/L brine,and its temperature and salt tolerance are significantly improved,which can be applied to the drag reduction of brine pipeline.关键词
减阻剂/卤水管输/聚合物基纳米材料/蠕虫胶束/诱导剪切结构Key words
drag reducer/brine pipeline transport/polymer-based nanomaterials/worm micelle/induced shear structure分类
通用工业技术引用本文复制引用
秦文龙,林倩影,乐雷,秦臻伟,李晗晰,秦国伟..盐水中聚合物基纳米材料/蠕虫胶束复合体系剪切诱导特性[J].中国石油大学学报（自然科学版）,2025,49(3):141-148,8.基金项目
国家自然科学基金项目(52174027) （52174027）
西安石油大学研究生创新基金项目(YCX2412014) （YCX2412014）
