Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024174 |
Permeability Prediction in Rocks Experiencing Mineral Precipitation and Dissolution: A Numerical Study | |
Niu, Qifei1,2; Zhang, Chi1 | |
2019-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:4页码:3107-3121 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In this study, we focus on the electrical tortuosity-based permeability model k = r(eff)(2)/8F (r(eff) is an effective pore size, and F is the formation factor) and analyze its applicability to rocks experiencing mineral precipitation and dissolution. Two limiting cases of advection-dominated water-rock reactions are simulated, that is, the reaction-limited and transport-limited cases. At the pore scale, the two precipitation/dissolution patterns are simulated with a geometrical model and a phenomenological model. The fluid and electric flows in the rocks are simulated by directly solving the linear Stokes equation and Laplace equation on the representative elementary volume of the samples. The numerical results show that evolutions of k and F differ significantly in the two limiting cases. In general, the reaction-limited precipitation/dissolution would result in a smooth variation of k and F, which can be roughly modeled with a power function of porosity phi with a constant exponent. In contrast, the transport-limited precipitation/dissolution mostly occurs near the pore throats where the fluid velocity is high. This induces a sharp change in k and F despite a minor variation in phi. The commonly used power laws with constant exponents are not able to describe such variations. The results also reveal that the electrical tortuosity-based permeability prediction generally works well for rocks experiencing precipitation/dissolution if r(eff) can be appropriately estimated, for example, with the electrical field normalized pore size Lambda. The associated prediction errors are mainly due to the use of electrical tortuosity, which might be considerably larger than the true hydraulic tortuosity. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000468597900029 |
WOS关键词 | PORE-SCALE STRUCTURE ; POROUS-MEDIA ; ELECTRICAL-CONDUCTIVITY ; HYDRAULIC CONDUCTIVITY ; COMPLEX CONDUCTIVITY ; INDUCED POLARIZATION ; RELATIVE PERMEABILITY ; FLUID PERMEABILITY ; WORMHOLE FORMATION ; SULFATE-SOLUTIONS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182234 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Kansas, Dept Geol, Lawrence, KS 66045 USA; 2.Boise State Univ, Dept Geosci, Boise, ID 83725 USA |
推荐引用方式 GB/T 7714 | Niu, Qifei,Zhang, Chi. Permeability Prediction in Rocks Experiencing Mineral Precipitation and Dissolution: A Numerical Study[J]. WATER RESOURCES RESEARCH,2019,55(4):3107-3121. |
APA | Niu, Qifei,&Zhang, Chi.(2019).Permeability Prediction in Rocks Experiencing Mineral Precipitation and Dissolution: A Numerical Study.WATER RESOURCES RESEARCH,55(4),3107-3121. |
MLA | Niu, Qifei,et al."Permeability Prediction in Rocks Experiencing Mineral Precipitation and Dissolution: A Numerical Study".WATER RESOURCES RESEARCH 55.4(2019):3107-3121. |
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