高等学校化学学报2024，Vol.45Issue(6)：111-120,10.DOI:10.7503/cjcu20230456
热水化学驱体系与稠油组分间相互作用及其理论模拟研究
Interaction Between Hot Water Chemical Drive System and Thick Oil Components and Theoretical Simulation Research
摘要
Abstract
To investigate the effects of temperature and polymer chemistry on the properties of thick oil,the thick oil fractions were analyzed by scanning electron microscopy,Fourier transform infrared spectrometer and rheometer.scanning electron microscopy.Results indicated that the asphaltene surface morphology was irregular,and the colloid surface was rough and had a pore structure.Fourier infrared spectroscopy detected three thick oil fractions with characteristic absorption peaks of aromatic hydrocarbons.Rheological performance test was conducted to investigate the effects of polymer chemical addition,mineralization,temperature and pH on the rheological performance and interfacial film properties of thick oil.The experimental results showed that the polymer dosage had a significant effect on the energy storage modulus and loss modulus of the thick oil,while the increase of mineralization enhanced the complex viscosity of the thick oil,and the viscoelasticity of the thick oil was stronger under acidic and alkaline conditions than that under neutral conditions.It was found through theoretical studies that the addition of polymer chemistries reduced the viscosity of thick oil and the effect was more pronounced at higher temperatures.The interaction between bitumen and polymer chemicals was the strongest,followed by colloid and the weakest interaction with oil components.The polymer chemical had no significant effect on the radial distribution function of the thick oil components,and mainly affected the thick oil components at the interface.Polymer chemicals and bitu-men could form hydrogen bonds,and the addition of polymer chemicals decreased the number of hydrogen bonds within the bitumen and increased the number of hydrogen bonds with the polymer chemicals.The increase of tempera-ture decreased the number of hydrogen bonds,especially between the asphaltene and the polymer chemical.关键词
热水化学驱/流变性能/理论计算/分子动力学模拟Key words
Hot water chemical drive/Rheological property/Theoretical calculation/Molecular dynamics simulation分类
化学化工引用本文复制引用
韩玉贵,刘长龙,赵鹏,郑雯雯,刘岳鹏,李轶..热水化学驱体系与稠油组分间相互作用及其理论模拟研究[J].高等学校化学学报,2024,45(6):111-120,10.基金项目
国家自然科学基金(批准号:22176140、22376157)资助. Supported by the National Natural Science Foundation of China(Nos.22176140,22376157). （批准号:22176140、22376157）
