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 language | English (US) |
|---|---|
| Pages (from-to) | 766-772 |
| Number of pages | 7 |
| Journal | Geotechnical Special Publication |
| Issue number | GSP 280 |
| DOIs | |
| State | Published - 2017 |
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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 journal › Article
}
TY - JOUR
T1 - Water and gas flows in hydrate-bearing sediments
AU - Xu, Yue
AU - Seol, Yongkoo
AU - Jang, Jaewon
AU - Dai, Sheng
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
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U2 - 10.1061/9780784480472.081
DO - 10.1061/9780784480472.081
M3 - Article
SP - 766
EP - 772
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
SN - 0895-0563
IS - GSP 280
ER -