Graduate Thesis Or Dissertation
 

Analyzing the Relationship between Capillary Pressure, Saturation, and Interfacial Area for a Three-Phase Flow System in Porous Media

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/4j03d479q

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  • Multi-phase flow in porous media includes many instances of subsurface flow. Three-phase flow in particular is important in situations of enhanced oil recovery, CO2 sequestration, and groundwater remediation. Many studies have been performed on how two fluid phases (oil/water or air/water) behave in porous media, but very few studies exist on three-phase flow systems (e.g. oil/water/air). This work presents data collected via x-ray micro-tomography resulting in high-resolution three-dimensional images of the fluid configurations for varying degrees of saturation. The relationship of capillary pressure (Pc), saturation (Sw), and fluid-fluid interfacial area (anw) was found to eliminate hysteresis for the oil-water fluid pair in the water-wet system, but due to insufficient data, this could not be confirmed for the air-oil fluid pair in the water-wet system nor either fluid pair in the fractionally-wet system. Additionally, for the oil-water fluid pair the wettability of the medium had a pronounced effect on the capillary pressure-saturation-interfacial area relationship, however wettability did not alter the capillary pressure-saturation-interfacial area relationship for the air-oil fluid pair.
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  • International Research Institute of Stavanger
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