| Thermal EOR processes | Steam flooding Cyclic steam stimulation In-situ combustion Hot water flooding Steam-assisted gravity drainage |
| Chemical EOR processes | Hydrocarbon miscible/immiscible CO2 miscible CO2 immiscible Nitrogen Flue gas (miscible and immiscible) Gravity drainage |
| Gas EOR processes | Micellar-polymer Polymer Caustic/alkaline Alkaline/surfactant |
| Other EOR processes | Carbonated water flood Microbial Electromagnetic heating |