Journal
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
Volume 30, Issue -, Pages 19-33Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijggc.2014.08.016
Keywords
CO2 storage; Khmer Basin; Saline aquifer; Hydrodynamic trap; Matched storage capacity; Cambodia
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This study screens and rank Cambodian sedimentary basins in terms of their containment, capacity, and feasibility for the geological storage of CO2. The results of the screening and ranking procedure indicate that the Khmer Basin is the most suitable basin, followed by the Kampong Saom and Tonle Sap basins. A quantitative volumetric assessment-based evaluation of CO2 storage capacity is performed on these three suitable basins. The evaluation yields a range in the national CO2 storage capacity of 90 Mt (in structural traps) to 45 Gt (in hydrodynamic traps), representing low- and high-case estimates, respectively. The saline aquifers associated with this storage capacity should be considered prospective storage options as hydrodynamic traps because of containment and capacity issues associated with the structural traps. Eight major point sources of CO2 are identified that have a combined output (estimated for 2008-2024) of 43.1 Mt annually and 82 billion m(3) in place, and the potentially prospective matched storage capacity is assumed. Overall, a combination of the initial suitabilities of the basins and estimates of prospective matched storage capacity shows that the Khmer, Kampong Saom, and Tonle Sap basins may provide a solution to the problem of reducing future atmospheric emissions. The present results should assist both exploration geologists and experts in carbon capture and storage to gain a better understanding of the CO2 storage resources of Cambodia. However, the results should be regarded as preliminary because of the limited available data on which the assessments were based; future geological and geophysical data should improve the reliability of the estimates of carbon storage capacity reported here. (C) 2014 Elsevier Ltd. All rights reserved.
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