Regional opportunities for CO2 capture and storage in Southeast Asia

Abstract

In this paper, we evaluate opportunities for CO2 capture and storage (CCS) within a study area of radius 1,000 km from Singapore. Results show that stationary CO2 emission from the study area is 391 Mtpa. There is mid CO2 storage resource of 0.5 Gt in oil reservoirs. In addition, CO2 enhanced gas/oil recovery (CO2-EGR/EOR) can recover 1.86 billion barrels of oil. The largest amount of CO2-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 CO2 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 CO2 storage resource and 101 MMbbl condensate recovery by CO2-EGR. The mid CO2 storage resource in saline aquifers is 379 Gt, accounting for the 98% of total CO2 storage. Furthermore, we propose an ASEAN CCS corridor connecting Singapore with the North Sumatra, Central Sumatra, and Malay basins wherein CO2 captured from Singapore and the host country can be transported to oil and gas reservoirs or saline aquifers within these basins for permanent storage.