GSTDTAP  > 资源环境科学
DOI10.1029/2018WR024174
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
ISSN0043-1397
EISSN1944-7973
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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