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Article

Effect of Permeability on Hydrate-Bearing Sediment Productivity and Stability in Ulleung Basin, East Sea, South Korea

1
Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
2
Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, Gyeonggi 10223, Korea
3
The Petroleum and Marine Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Jacek Majorowicz
Energies 2021, 14(6), 1752; https://doi.org/10.3390/en14061752
Received: 2 February 2021 / Revised: 17 March 2021 / Accepted: 19 March 2021 / Published: 22 March 2021
(This article belongs to the Special Issue Sustainable Geotechnical Engineering and Its Applications)
Methane hydrate has attracted attention as a next-generation resource, and many researchers have conducted various studies to estimate its productivity. Numerical simulation is the optimal method for estimating methane gas productivity. Meanwhile, using a reasonable input parameter is essential for obtaining accurate numerical modeling results. Permeability is a geotechnical property that exhibits the greatest impact on productivity. The permeability of hydrate-bearing sediment varies based on the sediment pore structure and hydrate saturation. In this study, an empirical permeability model was derived from experimental data using soil specimens from the Ulleung Basin, and the model was applied in numerical analysis to evaluate the sediment gas productivity and ground stability. The gas productivity and stability of hydrate-bearing sediments were compared by applying a widely used permeability model and the proposed model to a numerical model. Additionally, a parametric study was performed to examine the effects of initial hydrate saturation on the sediment gas productivity and stability. There were significant differences in the productivity and stability analysis results according to the proposed permeability model. Therefore, it was found that for accurate numerical analysis, a regional permeability model should be applied. View Full-Text
Keywords: methane hydrate; permeability model; initial hydrate saturation; gas productivity; hydrate-bearing sediment methane hydrate; permeability model; initial hydrate saturation; gas productivity; hydrate-bearing sediment
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MDPI and ACS Style

Kim, J.-T.; Kang, C.-W.; Kim, A.-R.; Lee, J.Y.; Cho, G.-C. Effect of Permeability on Hydrate-Bearing Sediment Productivity and Stability in Ulleung Basin, East Sea, South Korea. Energies 2021, 14, 1752. https://doi.org/10.3390/en14061752

AMA Style

Kim J-T, Kang C-W, Kim A-R, Lee JY, Cho G-C. Effect of Permeability on Hydrate-Bearing Sediment Productivity and Stability in Ulleung Basin, East Sea, South Korea. Energies. 2021; 14(6):1752. https://doi.org/10.3390/en14061752

Chicago/Turabian Style

Kim, Jung-Tae, Chul-Whan Kang, Ah-Ram Kim, Joo Yong Lee, and Gye-Chun Cho. 2021. "Effect of Permeability on Hydrate-Bearing Sediment Productivity and Stability in Ulleung Basin, East Sea, South Korea" Energies 14, no. 6: 1752. https://doi.org/10.3390/en14061752

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