Evaluation of asphaltene adsorption on minerals of dolomite and sandstone formations in two and three-phase systems

Asphaltene adsorption on reservoir rock minerals causes wettability alteration and pore plugging which subsequently reduces crude oil production. Also, it has a negative effect the efficiency of production enhanced recovery operations. In this study, extracted asphaltenes two samples Iranian fields dolomite, quartz, magnetite was investigated in two-and three-phase systems both static dynamic flow modes. Mineral adsorbents were analyzed by Brunauer–Emmett–Teller X-ray fluorescence methods. several laboratory tests including elemental analysis, field emission scanning electron microscopy, Fourier transform infrared spectroscopy carried out to characterize asphaltenes. The results showed that addition known parameters such as concentration specific surface area solid phase, water phase also affects amount adsorption. increases with increasing adsorbent (decreasing particle size) initial asphaltenes, decreases two-phase system. system can be up 90% higher than Doubling fluid rate significantly (by about 20%) adsorption, could sign physical adsorbents. structure composition have significant asphaltene sample, had more aromatic nature high nitrogen content, minerals. Finally, fitting equilibrium models experimental data reveals isotherm model depends type size Cited : Mohammadi, M.R., Bahmaninia, H., Ansari, S., Hemmati-Sarapardeh, A., Norouzi-Apourvari, Schaffie, M., Ranjbar, M. Evaluation dolomite sandstone formations systems. Advances Geo-Energy Research, 2021, 5(1), 39-52, doi: 10.46690/ager.2021.01.05