The preparation and spontaneous imbibition of carbon-based nanofluid for enhanced oil recovery in tight reservoirs

Abstract In this work, carbon-based nanofluid was prepared composed of hydrophilic carbon nanoparticles (CNPs) and Tween-80 to enhance oil recovery through spontaneous imbibition in tight reservoirs. The CNPs were characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), 1HNMR, interfacial tension and wettability measurements. The particle size of CNPs was