The Importance of Integrated Screening and Assessments for Future Potential CO2 Storage Sites Identification

The Fluid Technology (FT) department in Group Research & Technology division of PETRONAS Delivery & Technology was set-up to oversee and manage the challenges on the development of high CO2 gas fields in Malaysia. The main objective is focusing on the entire value-chain of Carbon Capture and Sequestration (CCS) which includes separations, pre-treatment technologies, transportation and storage phases. In Sarawak Basin, more than 50% of hydrocarbon reserves trapped in carbonate reservoir and more than 30% carbonate reservoir have high percentage of more than 40% CO2 content with almost 20 Tscf in volume. Most of high contaminants fields have not been developed since venting and flaring of CO2 and other contaminants are not allowed, therefore CCS is required in order to develop these fields. Few storage types with significant advantages and challenges are available in Sarawak Basin, which are producing/depleted fields, dry structures and deep saline aquifers. Integrated screening and maturation assessments of potential storage sites must be conducted in order to identify the most suitable CO2 storage sites. There are several phases and stages in order to mature the fields as storage site, which are Level 1, Level 2 and Level 3.