Inhibition of asphaltene deposition by Al_(2)O_(3) nanoparticles during CO_(2) injection
作者机构：Department of Petroleum EngineeringIslamic Azad UniversityCentral Tehran BranchTehranIran Department of Petroleum EngineeringIslamic Azad UniversityLamerd BranchLamerdIran Department of Mechanical EngineeringUrmia UniversityUrmiaIran Department of Petroleum and Natural Gas EngineeringSahand University of TechnologyTabrizIran Department of Petroleum EngineeringKharg BranchIslamic Azad UniversityKhargIran Department of Petroleum EngineringSchool of Chmical and Peoeum EngineeringShraz UnivertyShaz Iran
出 版 物：《Petroleum Research》 (石油研究（英文）)
年 卷 期：2023年第8卷第4期
页 面：499-504页
核心收录：
学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术]
主 题：CO_(2)injection Enhanced oil recovery Asphaltenedeposition Aluminum oxidenanoparticles Interfacial tension Bond number
摘 要：Carbon dioxide flooding is of interest due to its high oil-sweep efficiency for enhanced oil recovery and contribution to the reduction of greenhouse gas ***,when CO_(2)is injected into deep geological strata,asphaltene may *** this work,the effect of Al2O3 nanoparticles on the deposition of asphaltene was examined by assessing the variations of bond number and interfacial tension at different pressures and a temperature of 6℃.The asphaltene onset point and intensity were characterized using the bond number,which proved a better indicator of changes in oil droplet shape and interfacial tension with *** mixtures of toluene and n-heptane that contained two different kinds of asphaltenes were used as M and D oil samples.A 0.06 mass%addition of Al_(2)O_(3) nanoparticles,which worked best for reduction of interfacial tension,was also applied at various *** of nanoparticles to the oils prevented asphaltene precipitation in both synthetic samples by altering the slope of the plot of interfacial tension with pressure by 49.7% for the M sample and 9.0%for the D *** Al_(2)O_(3)nanoparticles were found to be more effective at inhibiting asphaltene precipitation for the M oil sample due to its lower H/C ratio and higher nitrogen content.
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