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How viscoelastic effects impact polymer fluid flow in porous media

Abstract:
Polymer fluids are widely used in subsurface and geotechnical engineering applications. While the steady shear rheology of polymer fluids is known to be reasonably captured by a Carreau-like shear thinning model, it is still not fully understood how their elastic rheological characteristics, beyond shearthinning behavior alone, influence their flow in porous media. In this study, we numerically investigate these effects using direct, pore-scale numerical simulations. By comparing data from simulations using the FENE-P model, which incorporates viscoelastic effects, with data from corresponding simulations using the Carreau model, which captures only shear thinning, we confirm that fluid elasticity can induce recirculation upstream of restrictions, leading to a reduction in polymer fluid conductance in porous media. As this recirculation is controlled by the geometric conditions, we conducted detailed comparisons between a two-dimensional model, a three-dimensional model mimicking microfluidics experiments, and an axisymmetric model, analogous to a constricted capillary tube. We also simulate flow in an ordered packing of uniform spheres to develop an understanding of the implications for flow in a 3D porous material. We find that these flows are regulated by the interplay between shear-thinning and elasticity effects. When the shear-thinning effect is sufficiently strong, the effects of elasticity are suppressed. In subsurface applications, viscoelastic effects are significant due to pore-scale confinement and fluid rheology itself, requiring explicit consideration in modeling, pilot design, and performance forecasting.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/s11242-026-02312-6

Authors

More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
ORCID:
0000-0002-1852-5599
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
University College
Role:
Author
ORCID:
0000-0002-8280-0743


More from this funder
Funder identifier:
https://ror.org/001aqnf71
Grant:
APP36940
More from this funder
Funder identifier:
https://ror.org/0439y7842
Grant:
EP/X034437/1
EP/X034305/1


Publisher:
Springer
Journal:
Transport in Porous Media More from this journal
Volume:
153
Article number:
65
Publication date:
2026-05-14
Acceptance date:
2026-04-08
DOI:
EISSN:
1573-1634
ISSN:
0169-3913


Language:
English
Keywords:
Pubs id:
2403558
Local pid:
pubs:2403558
Deposit date:
2026-05-07
ARK identifier:

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