Numerical Simulation and Sensitivity Analysis of Gas-Oil Gravity Drainage Process of Enhanced Oil Recovery

This paper presents a challenging work of simulating the top-down CO2-asssited gravity drainage EOR method. It investigates the effect of injection / production rate combinations, porosity heterogeneity, connate water saturation and type of injection well on the reservoir performance monitoring parameters including oil production rate, gas/water-oil ratio (GOR/WOR), cumulative oil production, average pressure supported by 2D oil saturation movement. It is becoming a benchmark for reservoir simulation studies of this specific process, reflected through the number of downloads; 31 times in past 30 days; 843 times Since 2007 (as on 19 Oct 2012); third most downloaded paper in 2010 (Onepetro.org).