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Title: Numerical Investigation of CH 4 Gas Production from CH 4 Hydrate-Bearing Sediments via CO 2 Injection

Abstract

CO2 injection has been deemed a promising method for CH4 production from gas hydrate-bearing sediments for its potential in stabilizing the host sediments and balancing carbon emission. However, the process is yet to be fully understood, as it involves interactions of multi-physical and chemical processes including the generation of water-immiscible CH4–CO2 fluid mixtures, the evolution of chemical reaction kinetics for both CH4 and CO2 hydrates, heat emission and absorption during hydrate formation and dissociation, and stress redistribution caused by spatially evolving responses of CH4–CO2 hydrate-bearing sediments. This paper develops a coupled thermo-hydro-chemo-mechanical formulation that captures the complexity of these processes and applies it to investigate the behavior of CH4 hydrate-bearing sediments subjected to CO2 injection. The capabilities of this coupled formulation are validated through numerical simulations of laboratory experiments of CO2 injection into CH4 hydrate-bearing soil. Moreover, the application of this formulation in a field-scale scenario reveals insights into the efficiencies of CH4 production and CO2 storage and the geomechanical implications. Notably, the study finds that compared to the depressurization-only method, the combined hot CO2 injection and depressurization method could increase CH4 production by approximately 400%. In addition, this method could sequester about 70% of injected CO2 into solid hydrates,more » while exhibiting smaller maximum slope of differential displacement. These outcomes highlight the viability and benefits of CH4 hydrate production through CO2 injection, increasing the prospects of this approach.« less

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2];  [2];  [3]
  1. Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
  2. National Energy Technology Laboratory, Morgantown, West Virginia 26505, United States
  3. GEOMAR, Helmholtz Centre for Ocean Research Kiel, Wischhofstr.1-3, D-24148 Kiel, Germany
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Org.:
USDOE; USDOE Office of Fossil Energy (FE)
OSTI Identifier:
2251554
Alternate Identifier(s):
OSTI ID: 2281396
Report Number(s):
DOE/NETL-2021/2858
Journal ID: ISSN 0887-0624
Resource Type:
Published Article
Journal Name:
Energy and Fuels
Additional Journal Information:
Journal Name: Energy and Fuels Journal Volume: 38 Journal Issue: 1; Journal ID: ISSN 0887-0624
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; fluids; geological materials; hydrate formation; mixtures; solvates

Citation Formats

Yu, Shuman, Uchida, Shun, Myshakin, Evgeniy M., Seol, Yongkoo, and Deusner, Christian. Numerical Investigation of CH 4 Gas Production from CH 4 Hydrate-Bearing Sediments via CO 2 Injection. United States: N. p., 2023. Web. doi:10.1021/acs.energyfuels.3c01304.
Yu, Shuman, Uchida, Shun, Myshakin, Evgeniy M., Seol, Yongkoo, & Deusner, Christian. Numerical Investigation of CH 4 Gas Production from CH 4 Hydrate-Bearing Sediments via CO 2 Injection. United States. https://doi.org/10.1021/acs.energyfuels.3c01304
Yu, Shuman, Uchida, Shun, Myshakin, Evgeniy M., Seol, Yongkoo, and Deusner, Christian. Fri . "Numerical Investigation of CH 4 Gas Production from CH 4 Hydrate-Bearing Sediments via CO 2 Injection". United States. https://doi.org/10.1021/acs.energyfuels.3c01304.
@article{osti_2251554,
title = {Numerical Investigation of CH 4 Gas Production from CH 4 Hydrate-Bearing Sediments via CO 2 Injection},
author = {Yu, Shuman and Uchida, Shun and Myshakin, Evgeniy M. and Seol, Yongkoo and Deusner, Christian},
abstractNote = {CO2 injection has been deemed a promising method for CH4 production from gas hydrate-bearing sediments for its potential in stabilizing the host sediments and balancing carbon emission. However, the process is yet to be fully understood, as it involves interactions of multi-physical and chemical processes including the generation of water-immiscible CH4–CO2 fluid mixtures, the evolution of chemical reaction kinetics for both CH4 and CO2 hydrates, heat emission and absorption during hydrate formation and dissociation, and stress redistribution caused by spatially evolving responses of CH4–CO2 hydrate-bearing sediments. This paper develops a coupled thermo-hydro-chemo-mechanical formulation that captures the complexity of these processes and applies it to investigate the behavior of CH4 hydrate-bearing sediments subjected to CO2 injection. The capabilities of this coupled formulation are validated through numerical simulations of laboratory experiments of CO2 injection into CH4 hydrate-bearing soil. Moreover, the application of this formulation in a field-scale scenario reveals insights into the efficiencies of CH4 production and CO2 storage and the geomechanical implications. Notably, the study finds that compared to the depressurization-only method, the combined hot CO2 injection and depressurization method could increase CH4 production by approximately 400%. In addition, this method could sequester about 70% of injected CO2 into solid hydrates, while exhibiting smaller maximum slope of differential displacement. These outcomes highlight the viability and benefits of CH4 hydrate production through CO2 injection, increasing the prospects of this approach.},
doi = {10.1021/acs.energyfuels.3c01304},
journal = {Energy and Fuels},
number = 1,
volume = 38,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2023},
month = {Fri Dec 22 00:00:00 EST 2023}
}

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