In this section
Our research includes exploring fundamental pore scale fluid dynamics, developing digital rocks analysis techniques, increasing the accuracy of field scale reservoir simulation, and evaluating the feasibility of scaling up CO2 storage to climate relevant scales.
StrataTrapper Advanced Modelling of CO2 Migration and Trapping
THMC4CCS: ThorougH experiMental and numerical investigation of Coupled processes for geologiC Carbon Storage
@article{Spurin:2021:10.1016/j.advwatres.2021.103868,
author = {Spurin, C and Bultreys, T and Rücker, M and Garfi, G and Schlepütz, CM and Novak, V and Berg, S and Blunt, MJ and Krevor, S},
doi = {10.1016/j.advwatres.2021.103868},
journal = {Advances in Water Resources},
pages = {1--7},
title = {The development of intermittent multiphase fluid flow pathways through a porous rock},
url = {http://dx.doi.org/10.1016/j.advwatres.2021.103868},
volume = {150},
year = {2021}
}
TY - JOUR
AB - storage and natural gas production. However, due to experimental limitations, it has not been possible to identify why intermittency occurs at subsurface conditions and what the implications are for upscaled flow properties such as relative permeability. We address these questions with observations of nitrogen and brine flowing at steady-state through a carbonate rock. We overcome previous imaging limitations with high-speed (1s resolution), synchrotron-based X-ray micro-computed tomography combined with pressure measurements recorded while controlling fluid flux. We observe that intermittent fluid transport allows the non-wetting phase to flow through a more ramified network of pores, which would not be possible with connected pathway flow alone for the same flow rate. The volume of fluid intermittently fluctuating increases with capillary number, with the corresponding expansion of the flow network minimising the role of inertial forces in controlling flow even as the flow rate increases. Intermittent pathway flow sits energetically between laminar and turbulent through connected pathways. While a more ramified flow network favours lowered relative permeability, intermittency is more dissipative than laminar flow through connected pathways, and the relative permeability remains unchanged for low capillary numbers where the pore geometry controls the location of intermittency. However, as the capillary number increases further, the role of pore structure in controlling intermittency decreases which corresponds to an increase in relative permeability. These observations can serve as the basis of a model for the causal links between intermittent fluid flow, fluid distribution throughout the pore space, and the upscaled manifestation in relative permeability.
AU - Spurin,C
AU - Bultreys,T
AU - Rücker,M
AU - Garfi,G
AU - Schlepütz,CM
AU - Novak,V
AU - Berg,S
AU - Blunt,MJ
AU - Krevor,S
DO - 10.1016/j.advwatres.2021.103868
EP - 7
PY - 2021///
SN - 0309-1708
SP - 1
TI - The development of intermittent multiphase fluid flow pathways through a porous rock
T2 - Advances in Water Resources
UR - http://dx.doi.org/10.1016/j.advwatres.2021.103868
UR - https://www.sciencedirect.com/science/article/pii/S0309170821000233?via%3Dihub
UR - http://hdl.handle.net/10044/1/87319
VL - 150
ER -