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dc.contributor.authorde la Fuente Ruiz, Maria
dc.contributor.authorVaunat, Jean
dc.contributor.authorMarín Moreno, Hector
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.identifier.citationDe la Fuente, M.; Vaunat, J.; Marín-Moreno, H. Consolidation of gas hydrate-bearing sediments with hydrate dissociation. "E3S Web of Conferences", Novembre 2020, vol. 205, p. 11007:1-11007:7.
dc.description.abstractQuantifying sediment deformation induced by depressurization of gas hydrate reservoirs and hydrate dissociation is crucial for the safe and economic production of natural gas from hydrates, and for understanding hydrate-related natural geological risks. This study uses our recently developed fully-coupled Thermo-Hydro-Mechanical formulation for gas hydrate-bearing geological systems implemented in the 3D Code_Bright simulator. First, the model formulation is briefly presented. Then, the model is applied to reproduce published experimental consolidation tests performed on hydrate-bearing pressure-core sediments recovered from the Krishna–Godavari Basin (offshore of India) during the India National Gas Hydrate Project Expedition 02 (NGHP02). The numerical simulation reproduces the tests in which the sediment is loaded and unloaded prior and after hydrate dissociates via depressurization at constant effective stress. Our results successfully capture sediment collapse when hydrate dissociates at a mean effective stress above that of the host sediment consolidation curve. The mechanical constitutive model Hydrate-CASM also allows reproducing the experimentally observed changes in sediment swelling index with changes in hydrate saturation.
dc.publisherEDP Sciences
dc.rightsAttribution 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subject.lcshSediment transport
dc.titleConsolidation of gas hydrate-bearing sediments with hydrate dissociation
dc.subject.lemacSediments (Geologia) -- Transport
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorde la Fuente, M.; Vaunat, J.; Marín-Moreno, H.
local.citation.publicationNameE3S Web of Conferences

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Attribution 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 3.0 Spain