engleski

Simulation Analysis of CO2-EOR Process and Feasibility of CO2 Storage during EOR

Oil production and retention were observed and compared in 72 reservoir simulation cases after which an economic analysis for various CO2 and oil prices was performed. Reservoir simulation cases comprise different combinations of WAG ratios, permeabilities and well distances. These models were set at 3 different depths, thus different pressure and temperature conditions, to see the impact of miscibility on oil production and CO2 sequestration. Those reservoir conditions affect oil production and CO2 retention differently. The retention trend dependent on depth is not monotonic - optimal retention relative to the amount of injected CO2 can be achieved at middle depth, and at mediocre permeability as well. Results reflecting different reservoir conditions and injection strategies are shown, and an analysis including utilization factor and net present value has been conducted to examine the feasibility of different scenarios. The analysis presented in this paper can serve as a guideline for multiparameter analysis and optimization of CO2-EOR with WAG injection strategy.

numerical simulation ; EOR ; CO2 utilization and storage ; mobility control

Glavni autori: Maja Arnaut, Domagoj Vulin