The application of foams in the petroleum industry has gained significant interest in the past few years, demanding stable foams under applications conditions. In this work, a systematic screening study was carried out using surfactants of different chemical natures (anionic, cationic, non-ionic, and zwitterionic) to formulate N2- and CO2-foams in different brines. High concentrations of salts, especially bivalent cations (Ca2+ and Mg2+), led to a decrease in foam stability of anionic surfactants due to precipitation. In addition, coarsening dominated the foam destruction mechanisms of CO2-foams, due to the large gas solubility in the aqueous phase, compared to N2. Subsequently, three ionic surfactants and two oxide nanoparticles (NPs) (SiO2 and Al2O3) were used in combinations of similar or opposite charges to stabilize CO2 foams in a complex brine, typical of injection fluids (desulfated seawater - DSW). Surface tension, viscosity, zeta potential and hydrodynamic size experiments allowed the analysis of CO2 foam stability based on the impact of surfactant/NP interactions on bulk and interfacial properties. All oppositely charged systems improved the foam half-life; however, a higher NP concentration was required for surfactants with high interface adsorption efficiency. Both bulk viscosity and rigidity of the interfacial films drastically increased in these systems, reducing foam drainage. The results from this thesis showed that the use of NPs should be tailored to the surfactant of choice, considering the conditions of salinity and pH of the medium, to achieve an interplay of interfacial and rheological properties able to reduce foam drainage in applications involving CO2 foam in brine.