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Interfacial Tension Measurements Using MRI Drop Shape Analysis

Lookup NU author(s): Dr Kieren Hollingsworth

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Abstract

Accurate interfacial tension data for fluid systems such as hydrocarbons and water is essential to many applications such as reservoir oil and gas recovery predictions. Conventional interfacial tension measurement techniques typically use optical images to analyze droplet shapes but require that the continuous-phase fluid be optically transparent and that the fluids are not refractive index matched. Magnetic resonance images obtain contrast between fluids using other mechanisms such as magnetic relaxation weighting, so systems that are impossible to measure with optical methods may be analyzed. In this article, we present high-field (9.4 T) MRI images of various droplets analyzed with axisymmetric drop shape analysis. The resultant interfacial tension data show good agreement with literature data. The method is subsequently demonstrated using both opaque continuous phases and refractive-index-matched fluids. We conclude with a brief consideration of the potential to extrapolate the methodology to lower magnetic fields (0.3 T), featuring more accessible hardware; although droplet imaging is possible, resolution and stability do not currently permit accurate interfacial tension measurements.


Publication metadata

Author(s): Hussain R, Vogt SJ, Honari A, Hollingsworth KG, Sederman AJ, Mitchell J, Johns ML

Publication type: Article

Publication status: Published

Journal: Langmuir

Year: 2014

Volume: 30

Issue: 6

Pages: 1566-1572

Print publication date: 28/01/2014

ISSN (print): 0743-7463

ISSN (electronic): 1520-5827

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/la404635x

DOI: 10.1021/la404635x


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