Perpustakaan Digital ITB

The urgent need to mitigate climate change has driven significant advancements in carbon capture, utilization, and storage (CCUS), with one crucial aspect being the conversion of existing oil production wells into CO2 injection wells. This transformation not only helps reduce greenhouse gas emissions but also enhances oil recovery through CO2-enhanced oil recovery (CO2-EOR). The process involves a meticulous re-completion design and thorough well integrity assessment to ensure safe and efficient CO2 storage over the long term. Key components of this re-completion process include evaluating production performance, estimating injectivity, predicting corrosion damage, and analyzing tubing stress. Productivity analysis focuses on reservoir characteristics and stimulation techniques to optimize fluid flow. Injectivity estimation determines optimal injection rates and pressures while considering reservoir and fluid properties. Corrosion prediction and tubing stress analysis ensure the well can withstand CO2-induced stresses and maintain operational integrity. This study presents a case study of well "S," which exemplifies the re-completion plan's effectiveness in enhancing well integrity and CO2 storage efficiency. Recommendations include economic feasibility studies, further design refinement, and continuous evaluation of corrosion management strategies to ensure sustainable operation. This study underscores the importance of integrated planning and rigorous assessment in converting oil production wells to CO2 injection wells, contributing to environmental sustainability, and advancing CCUS technologies.