Publications

The Sukowati Field has emerged as a pivotal site for advancing Enhanced Oil Recovery (EOR) techniques in Indonesia. This study focuses on the deployment of CO2 interwell injection systems and outlines the planning and implementation of a tailored CO2 injection framework aimed at improving reservoir subsurface characterization, enabling a deeper understanding of lateral sweep efficiency. The innovative strategies employed demonstrate the potential of CO2-EOR to enhance hydrocarbon recovery.

A comprehensive reservoir analysis was conducted, focusing on critical parameters such as injectivity profiles, reservoir heterogeneity, and CO2 logistics for operational deployment. This analysis informed the development of a precision-engineered interwell injection system designed to optimize CO2 distribution, with objectively to get better understanding of reservoir characterization of improvement lateral sweep efficiency with a 33-day CO2 injection pilot to inject 2,500 tonnes of CO2. Advanced reservoir modeling and wellbore simulation played a critical role in the planning and execution of the CO₂ interwell injection strategy at the Sukowati Field. The models enabled prediction of CO₂ movement, pressure propagation, and oil displacement efficiency under varying injection scenarios. Furthermore, the wellbore simulation component helped identify optimal injection parameters such as bottomhole pressure, flow rate, and CO₂ phase stability. These simulation outputs served as a foundation for designing surface facilities, and defining operational limits. The key findings from this modeling effort—particularly related to pressure behavior, injectivity trends efficiency—are briefly described in the subsequent sections to highlight their impact on the field implementation strategy. Productivity monitoring was performed from the adjacent producer wells.

The implementation phase integrated advanced monitoring systems to track CO2 injection performance, maintain well integrity, and manage injection pressures effectively. This ensured operational safety and system optimization throughout the process. Early field results indicated a positive impact on oil production rates, validating the efficacy of the CO2-EOR approach.
This research highlights the transformative potential of CO2-EOR in achieving energy security. It provides a scalable and replicable framework for implementing interwell injection systems in other mature Indonesian fields, paving the way for an economically viable future in hydrocarbon recovery. The Sukowati Field serves as a benchmark for integrating advanced EOR strategies in mature reservoirs, showcasing the value of targeted engineering and innovation in achieving energy goals.