Study of recovery factor and CO(2) storage behavior in a reservoir using numerical simulation

Abstract

In this study, the behavior of the recovery factor during the displacement and storage phases of carbon dioxide (CO₂) in an Ecuadorian reservoir was investigated by numerical simulation. Continuous injection and CO₂ WAG methods were used. The methodology included field data collection, creation of a static reservoir model, configuration of the PVT model with CMG software, construction of a dynamic model in GEM-CMG based on rock-fluid properties, and evaluation of CO₂ injection scenarios. After a screening analysis, the optimal scenario was identified and the performance of the recovery factor over time was studied. The results indicated that, during the 8 years of simulation, the recovery factor with continuous injection was 28%, while with the WAG method it reached 31%. It was concluded that WAG was the most efficient method. Regarding storage, it was observed that continuous injection was able to store 83% of the CO₂ in the reservoir.