Water and gas flows in hydrate-bearing sediments

Yue Xu, Yongkoo Seol, Jaewon Jang, Sheng Dai

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Gas hydrate plays a critical role in new energy resource, global carbon budget, and submarine instability. Enhanced understanding on how gas hydrates influencing these issues largely depends on in-depth understanding of multiphase flow in hydrate-bearing sediments particularly during hydrate formation and dissociation processes. However, appropriate selection of flow parameter values for hydrate simulators is not available. Published parameter values show large discrepancies among hydrate simulators as well as between numerical and experimental studies. Based on experimental results of single-phase flow in hydrate-bearing sediments, recommended flow parameters for hydrate-bearing sediments are λ = 1, Srw = 0.1, and Srg = 0.55 for the Brooks and Corey model and m = 0.7, Srw = 0.1, and Srg = 0.5 for the van Genuchten model. In general, current hydrate simulators underestimate residual gas saturation Srg, which will lead to overestimated rate of gas production from hydrate deposits. These results are also relevant to multiphase flow in porous media undergoing diagenesis, bio-clogging, or mineral precipitation and dissolution.

    Original languageEnglish (US)
    Pages (from-to)766-772
    Number of pages7
    JournalGeotechnical Special Publication
    Issue numberGSP 280
    DOIs
    StatePublished - 2017

    Fingerprint

    Bearings (structural)
    Hydrates
    gas flow
    Flow of gases
    simulator
    water flow
    Sediments
    multiphase flow
    gas hydrate
    sediment
    single-phase flow
    Water
    carbon budget
    energy resource
    gas production
    Gas hydrates
    diagenesis
    porous medium
    Simulators
    Multiphase flow

    ASJC Scopus subject areas

    • Architecture
    • Civil and Structural Engineering
    • Building and Construction
    • Geotechnical Engineering and Engineering Geology

    Cite this

    Water and gas flows in hydrate-bearing sediments. / Xu, Yue; Seol, Yongkoo; Jang, Jaewon; Dai, Sheng.

    In: Geotechnical Special Publication, No. GSP 280, 2017, p. 766-772.

    Research output: Contribution to journalArticle

    Xu, Yue ; Seol, Yongkoo ; Jang, Jaewon ; Dai, Sheng. / Water and gas flows in hydrate-bearing sediments. In: Geotechnical Special Publication. 2017 ; No. GSP 280. pp. 766-772.
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