Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR029072 |
Porosity-permeability evolution during simultaneous mineral dissolution and precipitation | |
Mollie S Sabo; Lauren E. Beckingham | |
2021-06-03 | |
发表期刊 | Water Resources Research
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出版年 | 2021 |
英文摘要 | Permeability in reactive porous media evolves in complex ways that are hard to predict. Macroscopic empirical equations are often used to estimate permeability evolution but fail to reflect the impact of pore scale reactions on permeability. This work aims to understand the evolution of permeability in systems where mineral dissolution and precipitation occur simultaneously. Pore network models are used for permeability simulation of a Paluxy sandstone using pore and pore-throat size distributions from analysis of X-ray CT images. Pore and pore-throat radii are increased and decreased to reflect the effects of dissolution and precipitation reactions. Varying spatial distributions of reactions are simulated and the resulting porosity and permeability values compared with commonly used macroscopic equations. It is observed that when dissolution occurs at the inlet and precipitation at the outlet, porosity increases while permeability decreases. Similar results are also observed in the respective opposite scenario where precipitation occurs at the inlet and dissolution at the outlet. When dissolution and precipitation reactions are randomly distributed throughout the network, porosity increases with little change in permeability that is not captured by the empirical equations. When reactions are controlled by pore and pore-throat sizes, such as dissolution occurring in pores and pore-throats of small size and precipitation in pores and pore-throats of larger size, porosity and permeability decrease. When precipitation occurs in pores and pore-throats of smaller size and dissolution in pores and pore throats of larger size, porosity and permeability increase and is described relatively well by the Verma-Pruess porosity-permeability equation. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
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/329733 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Mollie S Sabo,Lauren E. Beckingham. Porosity-permeability evolution during simultaneous mineral dissolution and precipitation[J]. Water Resources Research,2021. |
APA | Mollie S Sabo,&Lauren E. Beckingham.(2021).Porosity-permeability evolution during simultaneous mineral dissolution and precipitation.Water Resources Research. |
MLA | Mollie S Sabo,et al."Porosity-permeability evolution during simultaneous mineral dissolution and precipitation".Water Resources Research (2021). |
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