Gas production analysis for hydrate sediment with compound morphology by a new dynamic permeability model

Wei Liang, Jianguo Wang and Peibo Li

Applied Energy, 2022, vol. 322, issue C, No S0306261922007668

Abstract: Hydrate sediments usually have both pore-filling and grain-coating morphology, but current permeability models consider either pore-filling or grain-coating morphology. This paper proposes a dynamic permeability model for compound morphology in hydrate sediment with rough capillary. After it is verified with permeability experiments and existing permeability models, this dynamic permeability model is incorporated into our thermal-hydraulic-mechanical-chemical fully coupling model for hydrate decomposition. This fully coupling model is verified by the analytical solution of Terzaghi's one-dimensional consolidation and the Masuda's hydrate decomposition experiment. The simulation results showed that the difference between phase equilibrium pressure and reservoir dynamic pressure is an important indicator to ensure the stable and efficient production of hydrate. Capillary roughness mainly affects gas production peak rate during gas hydrate decomposition. Greater capillary roughness will make smaller gas production peak rate appear at later time. Cumulative gas production and sediment dynamic permeability increase with increase of the volume fraction of grain-coating hydrate.

Keywords: Permeability; Roughness; Pore-filling; Grain-coating; Compound morphology (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261922007668
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:322:y:2022:i:c:s0306261922007668

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2022.119434

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().