Journal
ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 12, 2021
Volume 12, Issue -, Pages 543-571Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev-chembioeng-092920-102703
Keywords
reactive transport; porous media; dissolution kinetics; linear stability; wormhole formation; pore-scale processes; numerical methods
Categories
Funding
- US Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division [DE-SC0018676]
- National Science Center (Poland) [2016/21/B/ST3/01373]
- U.S. Department of Energy (DOE) [DE-SC0018676] Funding Source: U.S. Department of Energy (DOE)
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This article reviews theoretical and computational research on the flow of reactive fluids in porous media, focusing on nonlinear feedback mechanisms that can enhance permeability. It discusses the evolution of geological forms inferred from these mechanisms and geotechnical applications, as well as the limitations and successes of Darcy-scale modeling and pore-scale modeling. Recent research on validation of pore-scale simulations, particularly through visual observations from microfluidic experiments, is also included.
We review theoretical and computational research, primarily from the past 10 years, addressing the flow of reactive fluids in porous media. The focus is on systems where chemical reactions at the solid-fluid interface cause dissolution of the surrounding porous matrix, creating nonlinear feedback mechanisms that can often lead to greatly enhanced permeability. We discuss insights into the evolution of geological forms that can be inferred from these feedback mechanisms, as well as some geotechnical applications such as enhanced oil recovery, hydraulic fracturing, and carbon sequestration. Until recently, most practical applications of reactive transport have been based on Darcy-scale modeling, where averaged equations for the flow and reactant transport are solved. We summarize the successes and limitations of volume averaging, which leads to Darcy-scale equations, as an introduction to pore-scale modeling. Pore-scale modeling is computationally intensive but offers new insights as well as tests of averaging theories and pore-network models. We include recent research devoted to validation of pore-scale simulations, particularly the use of visual observations from microfluidic experiments.
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