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| DOI | 10.1029/2020JB021511 |
| Pore Habit of Gas in Gassy Sediments | |
| Terzariol M.; Sultan N.; Apprioual R.; Garziglia S. | |
| 发表日期 | 2021 |
| ISSN | 21699313 |
| 卷号 | 126期号:5 |
| 英文摘要 | Gas bubbles are widespread in seafloors and lakebeds and typically found in shallow and fine-grained sediments. Sediment properties control gas nucleation and gas migration. Gas migration and pathways have been studied mostly in clean coarse particles or fine-grained matrices. Nevertheless, both cases show very distinct geo-behaviors. Pore habit is defined by the counteracting effects of effective stress and pore-throat-dependent capillary pressure. In this article, we explore gas nucleation by CO2 gas exsolution and its consequent gas-driven fractures (open-mode discontinuities) or pore invasion in binary sediments as a function of fines content (FC). We conducted physical test analogies for different FC subjected to gas exsolution. Our results highlight that the pore habit of gas in gassy sediments depends on its capability to invade a neighboring pore (capillarity) and burial depth (effective stress). We show that the load dominant fraction in binary soils can be used to estimate the dominant pore throat size. We then proposed a robust methodology to predict the pore habit of gassy sediments from its properties as defined in recent developments in soil behavior and characterization. Finally, we applied it to a real case offshore Vancouver Island. © 2021. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | Degassing; fracture; gas exsolution; gassy sediments; pore invasive; revised soil classification |
| 语种 | 英语 |
| 来源期刊 | Journal of Geophysical Research: Solid Earth
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/187118 |
| 作者单位 | REM-GM, IFREMER, Plouzane, France |
| 推荐引用方式 GB/T 7714 | Terzariol M.,Sultan N.,Apprioual R.,et al. Pore Habit of Gas in Gassy Sediments[J],2021,126(5). |
| APA | Terzariol M.,Sultan N.,Apprioual R.,&Garziglia S..(2021).Pore Habit of Gas in Gassy Sediments.Journal of Geophysical Research: Solid Earth,126(5). |
| MLA | Terzariol M.,et al."Pore Habit of Gas in Gassy Sediments".Journal of Geophysical Research: Solid Earth 126.5(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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