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http://dx.doi.org/10.9720/kseg.2018.2.161

Result of CO2 Geological Storage Site Survey for Small-scale Demonstration in Pohang Basin, Yeongil Bay, SE Korea  

Shinn, Young Jae (Korea Institute of Geoscience and Mineral Resources)
Kwon, Yi Kyun (Department of Geoenvironmental Sciences, Kongju National University)
Yoon, Jong-Ryeol (TerraEG Co., Ltd.)
Kim, Byoung-Yeop (Korea Institute of Geoscience and Mineral Resources)
Cheong, Snons (Korea Institute of Geoscience and Mineral Resources)
Publication Information
The Journal of Engineering Geology / v.28, no.2, 2018 , pp. 161-174 More about this Journal
Abstract
$CO_2$ storage site for small-scale demonstration has been investigated in Yeongil Bay, Pohang, SE Korea, using seismic survey and exploration well data. We found a potential storage formation consisting mainly of conglomerate and sandstone. The storage formation unconformably overlies volcanic basement rocks that are located in a depth from 650 to 950 m (below sea level). The depth of the storage formation is suitable for injecting supercritical $CO_2$ in the Pohang Basin. The average thickness of the storage formation is about 123 m, which possibly provides sufficient capacity at the level of small-scale storage demonstration. The overlying fine-grained deposits consist mainly of marine hemipelagic muds and interlayered turbidite sands. The overlying formation is considered as a good seal rock that is over 600 m thick and widely distributed in the onshore and offshore portions of the basin. NNE-trending faults found in the study area likely formed at basement level, probably not continue to seafloor. Such faults are interpreted as syndepositional faults involved to the basin initiation. This study reveals that the offshore area of the Pohang Basin contains deep geological formations suitable for small-scale $CO_2$ storage demonstration.
Keywords
$CO_2$ geological storage; small-scale demonstration; Pohang Basin; site characterization; seismic survey;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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