Perpustakaan Digital ITB

In this era, oil and gas industry have a crucial role for economic growth and energy demand in Indonesia. In the other hand, the production has aging in many fields due to the maturation. It means the industry must have a way to enhance this production. To address this, focusing on low resistivity zones that previously overlooked due to economic concerns and high watercut, offers a potential solution. These low resistivity reservoirs typically have low permeability, making fluid extraction challenging. One of well stimulation method, hydraulic fracturing, are used in this study which has shown promise in boosting production rates. In this study, reservoir modelling was carried out using tNav software to achieve the objective of the study. There were three cases that were modelled in this software, the first case is a base case without fracturing, the second case involves hydraulic fracturing in the first year, and the third case uses natural flow for the first five years, followed by hydraulic fracturing in the last five years. The objectives of this study are to evaluate the effectiveness of hydraulic fracturing in low resistivity zones, determine the best scenario for hydraulic fracturing in these zones, and identify the optimum scenario for economic profitability for both the contractor and the government. Based on the modelled, the cumulative oil production from every case is 1.3 mmstb, 2.2 mmstb, and 2.1 mmstb, respectively. Also, the results for economic evaluation that contractor and government generated in every case are 19.7 million USD and 19.9 million USD, 41.5 million USD and 42.3 million USD, and 29.8 million USD and 30.4 million USD, respectively. The study concludes that hydraulic fracturing is effective in low resistivity zones, boosting production rates and economic profitability. The best scenario is Case 2, where fracturing is applied in the first year. This case yields the highest oil and lowest water production, resulting in the highest Net Present Value (NPV).