Static Reservoir Modelling of Fractured Carbonates: Multi Scenario Approach, Case Study from the Potwar Basin, Pakistan

The Dhurnal field is a mature hydrocarbon accumulation discovered in 1984 and located 60 km South West of Islamabad, Pakistan in the Potwar basin, at the foothills of the Himalayas. To date, seven wells have been drilled in the Dhurnal structure and are producing hydrocarbons from several stacked carbonates reservoirs aging from the Permian to the Miocene. Due to the tight nature of the reservoirs, hydrocarbon production is enabled by the existence of an extensive fracture network. The ongoing Dhurnal Reservoir Modelling project represents the last opportunity to identify late life opportunities and to ensure that no stones are left unturned (bypassed Oil). A state of the art fractured carbonates reservoir static model exercise has been conducted to: - Serve as platform for history matching the historical performance of the field - Subsequently Locate the Remaining Oil - Forecast with adequate uncertainty ranges potential further development opportunities - Establish a standardized workflow to routinely model fractured carbonates reservoirs in the Potwar Basin.