Solid-fluid interfacial area measurement for wettability quantification in multiphase flow through porous media

Deepshikha Singh, Shantanu Roy, Harish Jagat Pant, Jyoti Phirani*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Quantification of wettability inside a porous medium is challenging. Most of the currently available methods use either a proxy surface of the porous solid or a small sample of the porous medium for wettability quantification. Recognizing that more wetting fluid has more interfacial area with porous solid, we develop a tracer method to quantify the solid-liquid interfacial area for a porous medium. We use two tracers for a fluid-phase, an ideal tracer, and an adsorbing tracer. The ideal tracer follows the flow path, and the adsorbing tracer dynamically adsorbs on the porous surface. We use the tracers’ mean residence time to quantify the solid-liquid interfacial area during multiphase flow in a porous medium. We conduct the tracer flow experiments at various saturations for a given wettability condition. We observe a monotonic behaviour of the wetted area with the fluid saturations. At the same residual saturation, oil has 10% less interfacial area with the porous solid in comparison to water. This difference in contact area can be used for quantifying the wettability using our methodology.

Original languageEnglish
Article number116250
Number of pages11
JournalChemical Engineering Science
Volume231
Early online date1 Nov 2020
DOIs
Publication statusPublished - 15 Feb 2021

Keywords

  • enhanced oil recovery
  • solid-fluid interfacial area
  • two-tracer method
  • wettability

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