Abstract
This paper will deal with the injection of carbon-dioxide (CO2) for the purpose of enhanced oil recovery (EOR) in mature and depleted oil and gas reservoirs of Upper Assam basin, India. CO2 injection system is a procedure used to extract maximum oil from the reservoir. This system is performed through injecting natural gases like CO2 into the oil wells. The main objective of the CO2 injection is to stimulate the oil droplets that are inside the oil reservoir rock. Minimum Miscibility Pressure (MMP) is achieved by lowering the viscosity of the oil to make it flow easily to the surface. This paper will calculate the MMP at which miscible recovery takes place. This minimum dynamic miscibility pressure depends upon several factors, such as the composition of injected gas, reservoir temperature and pressure and the characteristics of the oil in place fluids.
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