Influence of the Reactive Fluid Flow Regime on Mineral Dissolution Rate
https://doi.org/10.18599/grs.2025.2.16
Abstract
The digital core analysis technique and associated direct pore-scale flow modeling tools provide unique capabilities for simulating physicochemical processes at the microscale, while accounting for the structure and properties of actual reservoir rock matrices. This study presents numerical simulation results of pore-scale acid treatment in carbonate reservoirs using the density functional hydrodynamics (DFH) method. The proposed approach models interactions between hydrochloric acid (HCl) solution flow and pore surfaces through an additional distancedependent potential incorporated in the simulation model.
The investigation focuses on determining the influence of acid injection rate on mineral matrix dissolution efficiency, porosity evolution, and rock permeability alteration. Simulations were conducted on a three-dimensional digital dolomite model reconstructed based on X-ray tomography data. By accounting for both pore space heterogeneity and surface chemical reactions, this study examines flow regime effects on mineral dissolution processes and establishes empirical correlations between effective reaction rates and flow velocity.
The results demonstrate the significant potential of numerical methods for investigating processes that are challenging or impossible to reproduce under laboratory conditions. The developed approach offers new perspectives for analyzing acid stimulation effects on reservoir pore characteristics, with important implications for enhancing hydrocarbon recovery efficiency.
About the Authors
E. N. Ivanov
TCS LLC
Russian Federation
Russian Federation
Evgeny N. Ivanov – Cand. Sci. (Physics and Mathematics), Senior Research Scientist
16A, b.3, Leningradskoe sh., Moscow, 125171
D. A. Korobkov
TCS LLC
Russian Federation
Russian Federation
Dmitry A. Korobkov – Cand. Sci. (Engineering), Senior Research Scientist
16A, b.3, Leningradskoe sh., Moscow, 125171
M R. Stukan
TCS LLC
Russian Federation
Russian Federation
Mikhail R. Stukan – Cand. Sci. (Physics and Mathematics.), Program Manager
16A, b.3, Leningradskoe sh., Moscow, 125171
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Review
For citations:
Ivanov E.N., Korobkov D.A., Stukan M.R. Influence of the Reactive Fluid Flow Regime on Mineral Dissolution Rate. Georesursy = Georesources. 2025;27(2):206–215. (In Russ.) https://doi.org/10.18599/grs.2025.2.16
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