Temporal dynamics of reactive CO₂ flow in carbonate rock: insights from 4D synchrotron imaging
Author(s)
Type
Journal Article
Abstract
This research examines the dynamics of reactive CO2 transport in carbonate rock, focusing on the impact of carbonic acid-induced formation damage. We provide real-time visualization of these processes by employing four-dimensional (4D) high-resolution synchrotron imaging at the I13 beamline hosted at the Diamond Light Source. We visualize and quantify the temporal effects of reactive CO2 transport at the pore scale in carbonate rock. The experiment involved injecting CO2-saturated brine through the sample with in situ scanning to track the different stages of chemical dissolution. Analysis of the images shows a channelled dissolution pattern which corresponds with a gradual increase in porosity due to pore structure changes. Pore network models were generated from the segmented images to carry out a sequence of drainage and imbibition simulations. The result demonstrated that reduced capillary entry pressure with increased pore connectivity after dissolution. Furthermore, the trapping efficiency was quantified to predict a slight decrease in dissolution as the pores become broader and better connected.
Date Issued
2025-10-23
Date Acceptance
2025-09-29
Citation
Energy & Fuels, 2025, 39 (42), pp.20397-20409
ISSN
0887-0624
Publisher
American Chemical Society
Start Page
20397
End Page
20409
Journal / Book Title
Energy & Fuels
Volume
39
Issue
42
Copyright Statement
© 2025 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0 .
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/41158597
Subjects
CO2-SATURATED WATER
DISSOLUTION
Energy & Fuels
Engineering
Engineering, Chemical
GEOSEQUESTRATION
HETEROGENEOUS CARBONATES
PERMEABILITY
PORE-SPACE
PRESSURES
RAY COMPUTED-TOMOGRAPHY
Science & Technology
Technology
TEMPERATURES
TRANSPORT
Publication Status
Published
Coverage Spatial
United States
Date Publish Online
2025-10-09