Farajzadeh, R et al found that oil significantly affects foam stability. They noted that AOS foam, especially with shorter carbon chain alkanes, showed reduced stability and decayed earlier. The length of the alkane chain notably affected AOS foam stability, with shorter chains causing greater destabilization. This was explained by spreading and bridging coefficients. Moreover, increasing surfactant concentration from 0.1 to 1.0 wt% greatly improved foam stability in the presence of oil, increasing both liquid volume and stability. In the research paper authored by Anjan Phukan et al., they conducted an assessment of foam stability in the ASAG (alkaline-surfactant-alternated-gas) process at different temperatures. The results revealed that as the temperature increased, the stability of CO2 foam, characterized by foam volume, decreased for both anionic surfactants (SDS and AOS). An increase in temperature typically leads to a decrease in foam stability, manifested by a reduction in the foam's half-life (foam volume). This phenomenon is attributed to the increased tendency of the liquid phase to evaporate at higher temperatures, resulting in rapid bubble collapse and the release of trapped gas. Moreover, elevated temperatures increase the solubility of the gas phase, weakening the interfacial strength between the gas and liquid phases. As a result, the foam becomes more prone to instability due to greater liquid drainage.