The work analyzes the current state of water–gas stimulation technologies as a promising method for enhanced oil recovery. The influence of various parameters (pressure, temperature, gas content) on the oil displacement efficiency by water–gas mixtures has been investigated. Modern water–gas stimulation technologies – water alternating gas, simultaneous water and gas and their modifications with various additives have been analyzed. The effect of surfactants on stabilizing water–gas mixtures and improving their filtration characteristics has been studied. It has been determined that the optimal gas content in the mixture is 30–50%, at which viscosity increases by 1.5–3 times compared to water. The role of surfactants s in preventing mixture segregation and improving oil displacement has been established. Recommendations have been developed for using pump-ejector systems to inject water–gas mixtures with minimal energy consumption. Solutions have been proposed to reduce filtration resistance and optimize injection parameters. Methods for laboratory modeling of water–gas mixture filtration using artificial porous media have been considered. The economic and environmental feasibility of water–gas stimulation application has been substantiated, particularly when using associated petroleum gas and CO2, which is confirmed by successful experience at foreign fields.