Climate Change Data Portal
| DOI | 10.1016/j.advwatres.2020.103504 |
| Impacts of dynamic capillary pressure effects in supercritical CO2-Water flow: Experiments and numerical simulations | |
| Abidoye L.K.; Das D.B. | |
| 发表日期 | 2020 |
| ISSN | 0309-1708 |
| 卷号 | 136 |
| 英文摘要 | Contrary to report that dynamic capillary pressure effect was insignificant in the supercritical CO2-water (scCO2-water) flow system, this work found the effect to be considerable in the displacement of water or brine by injected scCO2 in the geological carbon sequestration, especially prior to the attainment of equilibrium in the system. Series of controlled laboratory scale experimental measurements and numerical simulations of the dynamic capillary pressure effect and its magnitude (dynamic coefficient, τ) for supercritical CO2-water(scCO2-water) system are reported in unconsolidated silica sand. Novel measurement technique has been developed to achieve this purpose, by applying the concept of two-phase flow system in the context of geological carbon sequestration. This work considers the injection of scCO2 into storage aquifer as a two-phase flow system, where the CO2 displaces the resident fluid (brine or water). Using a high-pressure and high-temperature experimental rig, capillary pressure–saturation relationships (Pc-S) for this flow system and the saturation rate dependencies of the Pc-S relationships (quantified by dynamic coefficient, τ), known as dynamic capillary pressure effect were determined. This τ was previously unreported for scCO2-water system. In scCO2-water flow system, τ ranges from 2 × 105 to 6 × 105 Pa s at high water saturation and 1.3 × 106 to 8 × 106 Pa saround the irreducible saturation. τ increases with rising temperature but decreases with increase in porous medium permeability. Numerically determined τ-S relationships compare well with the corresponding experimental results for wide range of water saturation.The implication was that water saturation of the porous media will be considerably underestimated, if the dynamic capillary pressure effect was ignored in the characterization of the scCO2-water flow system, i.e., if only equilibrium Pcrelationship was used. © 2020 Elsevier Ltd |
| 关键词 | AquifersCapillarityCapillary tubesCarbonCarbon dioxideFlow of waterGeologyHigh pressure effectsHydraulicsNumerical modelsPorous materialsSilicaSilica sandCarbon sequestrationControlled laboratoriesDynamic capillary pressuresDynamic coefficientHigh pressure and high temperatureIrreducible saturationMeasurement techniquesSupercritical CO2Two phase flowcapillary pressurecarbon dioxidecarbon sequestrationexperimental studynumerical methodpermeabilitypressure effectwater flow |
| 语种 | 英语 |
| 来源机构 | Advances in Water Resources |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/131858 |
| 推荐引用方式 GB/T 7714 | Abidoye L.K.,Das D.B.. Impacts of dynamic capillary pressure effects in supercritical CO2-Water flow: Experiments and numerical simulations[J]. Advances in Water Resources,2020,136. |
| APA | Abidoye L.K.,&Das D.B..(2020).Impacts of dynamic capillary pressure effects in supercritical CO2-Water flow: Experiments and numerical simulations.,136. |
| MLA | Abidoye L.K.,et al."Impacts of dynamic capillary pressure effects in supercritical CO2-Water flow: Experiments and numerical simulations".136(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Abidoye L.K.]的文章 |
| [Das D.B.]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Abidoye L.K.]的文章 |
| [Das D.B.]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Abidoye L.K.]的文章 |
| [Das D.B.]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
