Recovery of Asphaltenic Oil During Nano Fluid Injection

摘要

SiO2, NiO, and Fe3O4 nanoparticles are used for absorb asphaltene and prevent their precipitation. For the experiment, water and nanoparticle featured water are injected into micromodel that contained the synthetic oil. The synthetic oil includes asphaltenic components and n-heptane, and volume percentage of each one differs in every experiment. The results show that when n-heptane volume percentage is higher, asphaltene aggregation is more when water is injected. Although, during nanoparticle featured water injection when there is higher n-heptane volume percentages, asphaltene are absorbed on nanoparticle surfaces, which prevents precipitation. Also, it was obtained that SiO2 is the most efficient nanoparticle for this purpose that leads to the maximum recovery.