Overview of impact of the CO2 injection as EOR+ mode on the natural fractured reservoir to improve the ultimate oil recovery factor

Abstract

Naturally fractured reservoirs (NFR’s) have great importance and differ from conventional reservoirs as these contain fractures throughout the reservoir and on which around 40% of the world’s reserves reside in these reservoirs. These reservoirs are dual porous media (facture network and matrix), usually with low matrix and high fracture permeability. This makes the selection of the appropriate EOR to improve the ultimate oil recovery factor in these reservoirs challenging. Our project aims to investigate the efficiency of injecting CO2 gas as an EOR mode on improving the ultimate oil recovery factor and analyzing the effect of the key parameter of the reservoir and fluid properties on the CO2-EOR performance in the NFR.