Prof. Dr. Mohd Zaidi Bin Jafar2026-05-202026-05-20https://dspace.academy.edu.ly/handle/123456789/2085More than 70% of the world’s oil and gas production is via mature field growth, consisting mainly of secondary and tertiary production. The average recovery factor for gas is 70%, while that of oil, it is about 35%. (East African Scholars Publisher) In the tertiary recovery systems, Enhanced Oil Recovery (EOR) technology is often used, in which chemicals that were not initially present in the reservoir are injected to stimulate oil recovery. EUR strategies optimize the economic potential of mature oil fields by increasing oil recovery and extending field life. (Kittisrisawai and Romero-Zerón, 2015). For decades, gas enhanced oil recovery (GEOR) has been commonly used to improve oil recovery from hydrocarbon reservoirs. Researchers have experimented by injecting various forms of gases into reservoirs with the aim of increasing oil extraction. Carbon dioxide (CO2), nitrogen (N2), methane (CH4), ethane (C2H6), and propane (C3H8) are some of these gases. (Fakher and Imqam, 2020).As one EOR method for maintaining or improving recovery from mature oil reservoirs, foam has been exploited as a mobility control in carbon dioxide foam (CO2-foam) flooding to improve volumetric sweep efficiency. Foam has critical weaknesses, including unstable foam properties at high reservoir temperatures and in the presence of crude oil. To produce a stable foam, whey protein isolate, and sodium dodecyl sulfate (WPI+SDS) foam was investigated as an alternative foaming agent for CO2-foam in this study.SYNERGY BETWEEN PROTEIN AND SURFACTANT