The optimization of a potential geothermal reservoir using abandoned wells: a case study for the forest reserve field in Trinidad

Abstract The worldwide dependence on non-renewable energy sources continues as existing systems have been built these supplies. There is an established link between conventional resources, greenhouse gas (GHG) emissions and climate change its associated negative effects. As a signatory to the Paris Agreement, Trinidad Tobago (TT) has exploring strategies reduce GHG use of geothermal one potential option. Through enhanced systems, TT, even without extensive volcanic heat reservoirs, can still develop this renewable source by utilizing oil reservoirs. This study evaluates possibility designing evaluating using wells from Forest Reserve fields in South-western case study. high number abandoned which be re-used for tapping required reducing requirement drilling new injection production wells. Key information data reservoirs were used input CMG software model, design evaluate feasibility reservoir being possible viable production. A base model was constructed subjected three essential manual sensitivity analyses (well distance, stream temperature, pressure) obtain optimized then hydraulic fracturing. optimal retrofitted demonstrated best scenario due shallow nature area interest. Six (3 injector 3 producer wells) showed that capable capacity 3.3721 MWe 25-year period with Internal Rate Return 190% Net Present Value US$1,431,263,840.00 Minimum Acceptable 10%, Capital Expenditure US$12MM, Operating US$2MM cost electricity at US$0.05 per kWh. These results Crystal Ball apply Monte Carlo simulations where it confirmed project 100% economically feasible. cumulative carbon dioxide reduction after 50,062,500 tons CO 2 .