The Effect of Mixed Wettability on Pore‐Scale Flow Regimes Based on a Flooding Experiment in Ketton Limestone

M. Rücker, W.‐B. Bartels, Kamaljit Singh, N. Brussee, A. Coorn, H. A. van der Linde, A. Bonnin, H. Ott, S. M. Hassanizadeh, M. J. Blunt, H. Mahani, A. Georgiadis, S. Berg

Research output: Contribution to journalArticle

Abstract

Darcy‐scale multiphase flow in geological formations is significantly influenced by the wettability of the fluid‐solid system. So far it has not been understood how wettability impacts the pore‐scale flow regimes within rocks, which were in most cases regarded as an alteration from the base case of strongly water‐wet conditions by adjustment of contact angles. In this study, we directly image the pore‐scale flow regime in a carbonate altered to a mixed‐wet condition by aging with crude oil to represent the natural configuration in an oil reservoir with fast synchrotron‐based X‐ray computed tomography. We find that the pore‐scale flow regime is dominated by ganglion dynamics in which the pore space is intermittently filled with oil and brine. The frequency and size of these fluctuations are greater than in water‐wet rock such that their impact on the overall flow and relative permeability cannot be neglected in modeling approaches.
Original languageEnglish
Pages (from-to)3225-3234
Number of pages10
JournalGeophysical Research Letters
Volume46
Issue number6
Early online date6 Mar 2019
DOIs
Publication statusPublished - 28 Mar 2019

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wettability
flooding
limestone
experiment
oil
multiphase flow
pore space
rock
brine
tomography
crude oil
permeability
carbonate
effect
modeling

Cite this

Rücker, M. ; Bartels, W.‐B. ; Singh, Kamaljit ; Brussee, N. ; Coorn, A. ; van der Linde, H. A. ; Bonnin, A. ; Ott, H. ; Hassanizadeh, S. M. ; Blunt, M. J. ; Mahani, H. ; Georgiadis, A. ; Berg, S. / The Effect of Mixed Wettability on Pore‐Scale Flow Regimes Based on a Flooding Experiment in Ketton Limestone. In: Geophysical Research Letters. 2019 ; Vol. 46, No. 6. pp. 3225-3234.
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abstract = "Darcy‐scale multiphase flow in geological formations is significantly influenced by the wettability of the fluid‐solid system. So far it has not been understood how wettability impacts the pore‐scale flow regimes within rocks, which were in most cases regarded as an alteration from the base case of strongly water‐wet conditions by adjustment of contact angles. In this study, we directly image the pore‐scale flow regime in a carbonate altered to a mixed‐wet condition by aging with crude oil to represent the natural configuration in an oil reservoir with fast synchrotron‐based X‐ray computed tomography. We find that the pore‐scale flow regime is dominated by ganglion dynamics in which the pore space is intermittently filled with oil and brine. The frequency and size of these fluctuations are greater than in water‐wet rock such that their impact on the overall flow and relative permeability cannot be neglected in modeling approaches.",
author = "M. R{\"u}cker and W.‐B. Bartels and Kamaljit Singh and N. Brussee and A. Coorn and {van der Linde}, {H. A.} and A. Bonnin and H. Ott and Hassanizadeh, {S. M.} and Blunt, {M. J.} and H. Mahani and A. Georgiadis and S. Berg",
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Rücker, M, Bartels, WB, Singh, K, Brussee, N, Coorn, A, van der Linde, HA, Bonnin, A, Ott, H, Hassanizadeh, SM, Blunt, MJ, Mahani, H, Georgiadis, A & Berg, S 2019, 'The Effect of Mixed Wettability on Pore‐Scale Flow Regimes Based on a Flooding Experiment in Ketton Limestone', Geophysical Research Letters, vol. 46, no. 6, pp. 3225-3234. https://doi.org/10.1029/2018GL081784

The Effect of Mixed Wettability on Pore‐Scale Flow Regimes Based on a Flooding Experiment in Ketton Limestone. / Rücker, M.; Bartels, W.‐B.; Singh, Kamaljit; Brussee, N.; Coorn, A.; van der Linde, H. A.; Bonnin, A.; Ott, H.; Hassanizadeh, S. M.; Blunt, M. J.; Mahani, H.; Georgiadis, A.; Berg, S.

In: Geophysical Research Letters, Vol. 46, No. 6, 28.03.2019, p. 3225-3234.

Research output: Contribution to journalArticle

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