Enhanced oil recovery

Enhanced Oil Recovery is the process of increasing the amount of oil that can be recovered from an oil reservoir, usually by injecting some substances into an existing oil well to increase pressure and decrease the viscosity of the oil with a conventional oil well, natural pressure in the reservoir that pushes the oil to the surface or a pump is used to create and maintain the pressure. There are several different methods of Enhanced Oil Recovery including Thermal recovery, Gas injection, Chemical injection etc.