石油化工2025，Vol.54Issue(4)：495-501,7.DOI:10.3969/j.issn.1000-8144.2025.04.007
活性功能聚丙烯酰胺增黏及驱油机理
Viscosity-increasing and oil-displacement mechanisms of active functional partially hydrolyzed polyacrylamide
李雅婧 1伊卓 1胡晓娜 1刘希 1张瑞琪 1范荣1
作者信息
- 1. 中石化(北京)化工研究院有限公司,北京 100013
- 折叠
摘要
Abstract
The solution properties of active functional partially hydrolyzed polyacrylamide(A-HPAM)and partially hydrolyzed polyacrylamide(HPAM)under different temperatures and salinities were investigated by conventional experimental evaluation and molecular dynamics simulation.Visualization experiments were utilized to clarify the migration law,and the polymer viscosity-increasing and oil-displacement mechanisms were discussed based on the atomic and molecular levels.The experimental results show that the A-HPAM solution exhibits a trend of viscosity increase with temperature and salt within a certain range of temperature and salinity.It effectively reduces the interfacial tension between oil and water,with a pronounced capacity for crude oil dispersion and higher oil displacement efficiency compared to HPAM.The mutual association of hydrophobic groups of A-HPAM is the key factor for viscosity increasing with temperature.The sulfonic acid group of A-HPAM makes it less affected by salt ions,thus the viscosity is higher at high salinity.The hydrophobic groups can enhance the interaction between A-HPAM and the oil phase and reduce the interfacial tension.In addition,the spatial network structure is formed by A-HPAM molecules in the pore channels,which enables crude oil to move steadily with the displacement fluid and improves displacement efficiency.关键词
活性功能聚丙烯酰胺/分子动力学模拟/可视化/增黏Key words
active functional partially hydrolyzed polyacrylamide/molecular dynamics simulation/visualization/viscosity-increasing分类
石油、天然气工程引用本文复制引用
李雅婧,伊卓,胡晓娜,刘希,张瑞琪,范荣..活性功能聚丙烯酰胺增黏及驱油机理[J].石油化工,2025,54(4):495-501,7.
