The Dynamics of Nanoparticle- enhanced Fluid Displacement in Porous Media: A Pore-scale Study

Tannaz Pak, N. L Archilha, I. F Mantovani, A. C Moreira, Ian B. Butler

Research output: Contribution to journalArticle

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Abstract

This work provides new insights into the dynamics of silica nanoparticle-based removal of organic fluids (here oil) from naturally occurring porous media. We have used 4D (time-resolved 3D) imaging at pore-scale using X-ray computed micro-tomography (μCT) technique. The captured 3D tomographic
time-series data reveal the dynamics of immiscible oil displacement from a carbonate rock upon injection of nanoparticle (NP) suspensions (0.06 and 0.12
wt% SiO2 in deionised water). Our analysis shows significant pore-scale remobilisation of initially trapped oil upon injection of the NP suspensions,
specifically, at higher concentration. Our data shows that oil clusters become significantly smaller with larger fluid/fluid interface as a result of the higher concentration NP injection. This paper demonstrates that use of 2D radiograms collected during fluid injections allows monitoring flow dynamics at time
resolutions down to a few seconds using conventional laboratory-based
μCT scanners. Here, as an underlying mechanism for oil remobilisation, we present the first 4D evidence of in-situ formation of an oil in water emulsion induced by nanoparticles.
Original languageEnglish
JournalScientific Reports
Volume8
Issue number1
DOIs
Publication statusPublished - 24 Jul 2018

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porous medium
fluid
oil
remobilization
tomography
fluid injection
emulsion
scanner
carbonate rock
nanoparticle
silica
time series
water
monitoring

Cite this

Pak, Tannaz ; Archilha, N. L ; Mantovani, I. F ; Moreira, A. C ; Butler, Ian B. / The Dynamics of Nanoparticle- enhanced Fluid Displacement in Porous Media : A Pore-scale Study. In: Scientific Reports. 2018 ; Vol. 8, No. 1.
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The Dynamics of Nanoparticle- enhanced Fluid Displacement in Porous Media : A Pore-scale Study. / Pak, Tannaz; Archilha, N. L; Mantovani, I. F; Moreira, A. C; Butler, Ian B.

In: Scientific Reports, Vol. 8, No. 1, 24.07.2018.

Research output: Contribution to journalArticle

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