Experimental Investigation of the Combined Effect of IFT Variation and Wettability on Three-Phase Relative Permeabilities

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Experimental investigation of the effects of varying the inter-facial tension (IFT) between two phases in the presence of a third phase on three-phase relative permeabilities for anUnconsolidated Oil-Wet Medium is conducted for this research. This study extends previous studies conducted by Cinar and Orr (2004) using the same analog fluid system for an unconsolidated water-wet medium, whose results will be utilized to broaden this foregoing investigation to cover the effects of wettability. Extension of Cinar's previous studies is pursued to cover the range of wettability that may a rise in actual reservoir settings. Using the same analog fluid system, which is a quaternary liquid system composed of hexadecane, n-butanol, water and iso-propanol that allows us to control IFT variations systematically, we employ a series of displacement experiments using a water-wet glass bead pack, following a different fluid wetting sequence to simulate an oil-wet system.Subsequent recovery and pressure drop data are then analyzed to generate phase saturations and relative permeabilities using the Welge Tangent Construction Method and the extended Johnson-Bossler-Naumann (JBN) Method, respectively. Results indicate that lowering the IFT between the oil (C16-rich, wetting) and gas (NBA-rich, intermediate-wetting) phases imposes a strong influence on the wetting phase relative permeabilities, which exhibited an order of magnitude increase for every two orders of magnitude decrease in IFT. Residual oil saturation was also reduced for both wetting systems as the IFT between these two phases were lowered.


Type of resource text
Date created June 2004


Author Marquez, Sharoh Galeon
Primary advisor Orr Jr., Franklin M.
Degree granting institution Stanford University, Department of Petroleum Engineering


Subject School of Earth Energy & Environmental Sciences
Genre Thesis

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Marquez, Sharoh Galeon. (2004). Experimental Investigation of the Combined Effect of IFT Variation and Wettability on Three-Phase Relative Permeabilities. Stanford Digital Repository. Available at: https://purl.stanford.edu/tc037rd6519


Master's Theses, Doerr School of Sustainability

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