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Title: Mineral dissolution and wormholing from a pore-scale perspective

Abstract

A micro-continuum approach is proposed to simulate the dissolution of solid minerals at the pore scale under single-phase flow conditions. The approach employs a Darcy–Brinkman–Stokes formulation and locally averaged conservation laws combined with immersed boundary conditions for the chemical reaction at the solid surface. The methodology compares well with the arbitrary-Lagrangian–Eulerian technique. The simulation framework is validated using an experimental microfluidic device to image the dissolution of a single calcite crystal. The evolution of the calcite crystal during the acidizing process is analysed and related to the flow conditions. Macroscopic laws for the dissolution rate are proposed by upscaling the pore-scale simulations. Finally, the emergence of wormholes during the injection of acid in a two-dimensional domain of calcite grains is discussed based on pore-scale simulations.

Authors:
ORCiD logo; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Nanoscale Control of Geologic CO2 (NCGC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1469961
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Journal of Fluid Mechanics
Additional Journal Information:
Journal Volume: 827; Related Information: NCGC partners with Lawrence Berkeley National Laboratory (lead); University of California, Davis; Lawrence Livermore National Laboratory; Massachusetts Institute of Technology; Ohio State University; Oak Ridge National Laboratory; Washington University, St. Louis; Journal ID: ISSN 0022-1120
Publisher:
Cambridge University Press
Country of Publication:
United States
Language:
English
Subject:
bio-inspired, mechanical behavior, carbon sequestration

Citation Formats

Soulaine, Cyprien, Roman, Sophie, Kovscek, Anthony, and Tchelepi, Hamdi A. Mineral dissolution and wormholing from a pore-scale perspective. United States: N. p., 2017. Web. doi:10.1017/jfm.2017.499.
Soulaine, Cyprien, Roman, Sophie, Kovscek, Anthony, & Tchelepi, Hamdi A. Mineral dissolution and wormholing from a pore-scale perspective. United States. doi:10.1017/jfm.2017.499.
Soulaine, Cyprien, Roman, Sophie, Kovscek, Anthony, and Tchelepi, Hamdi A. Thu . "Mineral dissolution and wormholing from a pore-scale perspective". United States. doi:10.1017/jfm.2017.499.
@article{osti_1469961,
title = {Mineral dissolution and wormholing from a pore-scale perspective},
author = {Soulaine, Cyprien and Roman, Sophie and Kovscek, Anthony and Tchelepi, Hamdi A.},
abstractNote = {A micro-continuum approach is proposed to simulate the dissolution of solid minerals at the pore scale under single-phase flow conditions. The approach employs a Darcy–Brinkman–Stokes formulation and locally averaged conservation laws combined with immersed boundary conditions for the chemical reaction at the solid surface. The methodology compares well with the arbitrary-Lagrangian–Eulerian technique. The simulation framework is validated using an experimental microfluidic device to image the dissolution of a single calcite crystal. The evolution of the calcite crystal during the acidizing process is analysed and related to the flow conditions. Macroscopic laws for the dissolution rate are proposed by upscaling the pore-scale simulations. Finally, the emergence of wormholes during the injection of acid in a two-dimensional domain of calcite grains is discussed based on pore-scale simulations.},
doi = {10.1017/jfm.2017.499},
journal = {Journal of Fluid Mechanics},
issn = {0022-1120},
number = ,
volume = 827,
place = {United States},
year = {2017},
month = {8}
}