Imperial College London
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ProfessorMartinBlunt

Faculty of Engineering, Department of Earth Science & Engineering

Chair in Flow in Porous Media
 
 
 
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Contact

 

+44 (0)20 7594 6500m.blunt Website

 
 
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Location

 

2.38ARoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Menke:2016:10.1016/j.chemgeo.2016.02.030,
author = {Menke, HP and Andrew, MG and Blunt, MJ and Bijeljic, B},
doi = {10.1016/j.chemgeo.2016.02.030},
journal = {Chemical Geology},
pages = {15--26},
title = {Reservoir condition imaging of reactive transport in heterogeneous carbonates using fast synchrotron tomography - effect of initial pore structure and flow conditions},
url = {http://dx.doi.org/10.1016/j.chemgeo.2016.02.030},
volume = {428},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We investigate the impact of initial pore structure and velocity field heterogeneity on the dynamics of fluid/solid reaction at high Péclet numbers (fast flow) and low Damköhler number (relatively slow reaction rates). The Diamond Lightsource Pink Beam was used to image dissolution of Estaillades and Portland limestones in the presence of CO2-saturated brine at reservoir conditions (10 MPa and 50 °C representing ~1 km aquifer depth) at two flow rates for a period of 2 h. Each sample was scanned between 51 and 94 times at 4.76-μm resolution and the dynamic changes in porosity, permeability, and reaction rate were examined using image analysis and flow modelling. We find that the porosity can either increase uniformly through time along the length of the samples, or may exhibit a spatially and temporally varying increase that is attributed to channel formation, a process that is distinct from wormholing, depending on initial pore structure and flow conditions. The dissolution regime was structure-dependent: Estaillades with a higher porosity showed more uniform dissolution, while the lower porosity Portland experienced channel formation. The effective reaction rates were up to two orders of magnitude lower than those measured on a flat substrate with no transport limitations, indicating that the transport of reactant and product is severely hampered away from fast flow channels.
AU  - Menke,HP
AU  - Andrew,MG
AU  - Blunt,MJ
AU  - Bijeljic,B
DO  - 10.1016/j.chemgeo.2016.02.030
EP  - 26
PY  - 2016///
SN  - 1872-6836
SP  - 15
TI  - Reservoir condition imaging of reactive transport in heterogeneous carbonates using fast synchrotron tomography - effect of initial pore structure and flow conditions
T2  - Chemical Geology
UR  - http://dx.doi.org/10.1016/j.chemgeo.2016.02.030
UR  - http://hdl.handle.net/10044/1/31156
VL  - 428
ER  -
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