Experimental investigation of the relationship among capillary pressure, saturation, and interfacial area in a 2D micromodel under equilibrium and non-equilibrium conditions
Abstract
A series of experiments in a 2D macro-model were carried out to investigate the role of specific interfacial area in modelling capillarity in two-phase flow. Drainage and imbibition experiments were performed under both equilibrium and non-equilibrium conditions. Using visualization techniques, locations of all fluid-fluid interfaces in the model could be determined at any given time. From this information, saturation and specific interfacial area were determined. Also, from the radius of curvature of interfaces, local capillary pressure, and then average capillary pressure were calculated. The resulting information was used to construct surfaces of capillary pressure-saturation interfacial area for both drainage and imbibition and under both equilibrium and non-equilibrium conditions. It is found that these surfaces are the same in within error measurements.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2009
- Bibcode:
- 2009AGUFM.H11H..07B
- Keywords:
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- 1829 HYDROLOGY / Groundwater hydrology;
- 1832 HYDROLOGY / Groundwater transport