“…Global demand for crude oil in the energy sector remains high, despite the rapid development of renewable energy sources. − The discovery of new conventional oil reservoirs, however, generally declined in the past decades. To meet the growing demand, huge efforts have been devoted to unconventional reservoirs due to the vast potential for oil reserve growth. , However, unlike conventional reservoirs with considerable oil recovery factors, unconventional reservoirs often leave a large percentage of trapped oil, posing a challenge that requires innovative approaches to extract hydrocarbons throughout the reservoirs. , The low oil recovery factors of unconventional reservoirs, typically below 10% after primary oil recovery, can be attributed to their unique reservoir environment, including nanoscale pore sizes, low rock permeabilities, limited pore connectivity, and high oil viscosity . Gas injection-enhanced oil recovery (EOR) is a promising approach in tertiary oil recovery .…”