Regional opportunities for CO2 capture and storage in Southeast Asia.

• Stationary CO 2 emission within 1000 km from Singapore is 391 Mtpa. • With this area, subsurface reservoirs can store 386 Gt of CO 2. • Arun gasfield and Minas oilfield are top candidates for CO 2 storage and EGR/EOR. • A CCS corridor connecting Singapore to Sumatra, and the Malay Basin is proposed. In this paper, we evaluate opportunities for CO 2 capture and storage (CCS) within a study area of radius 1,000 km from Singapore. Results show that stationary CO 2 emission from the study area is 391 Mtpa. There is mid CO 2 storage resource of 0.5 Gt in oil reservoirs. In addition, CO 2 enhanced gas/oil recovery (CO 2 -EGR/EOR) can recover 1.86 billion barrels of oil. The largest amount of CO 2 -EOR is found in the Minas oil field (767 MMbbl) in Central Sumatra and the Seligi (119 MMbbl) and Dulang (99 MMbbl) oil fields in the Malay Basin. The mid CO 2 storage resource in gas reservoirs is 6.2 Gt. Of particular importance is the Arun gas condensate reservoir in the North Sumatra Basin with 1.3 Gt CO 2 storage resource and 101 MMbbl condensate recovery by CO 2 -EGR. The mid CO 2 storage resource in saline aquifers is 379 Gt, accounting for the 98% of total CO 2 storage. Furthermore, we propose an ASEAN CCS corridor connecting Singapore with the North Sumatra, Central Sumatra, and Malay basins wherein CO 2 captured from Singapore and the host country can be transported to oil and gas reservoirs or saline aquifers within these basins for permanent storage. [ABSTRACT FROM AUTHOR]