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Quantification of fluid saturations in transparent porous media

Lee-Ann K. Sills, Kevin G. Mumford and Greg A. Siemens
Quantification of fluid saturations in transparent porous media
Vadose Zone Journal (February 2017) 16 (2)

Abstract

Experiments using transparent porous media, where the indices of refraction of the solid grains and the wetting fluid are matched, can be used to quantify fluid saturations from digital images. In this study, significantly more efficient calibration and validation methods for unsaturated transparent porous media were developed, which used just three images and one saturation measurement. Imbibition and drainage column experiments were used to define the pixel intensity and saturation at residual wetting fluid saturation, as well as at residual nonwetting fluid saturation in two gradations of transparent porous media used for validation. The other images were pixel intensity at 100 and 0% wetting fluid saturation. Results from the drainage and imbibition experiments on the two transparent porous media gradations showed a log-linear saturation-pixel intensity relationship, which agreed with the validation points from this study as well as those using a previous calibration method. We expect that this new calibration procedure will allow efficient development of saturation-pixel intensity relationships for the investigation of multiphase flow using transparent porous media under a variety of conditions.


ISSN: 1539-1663
Serial Title: Vadose Zone Journal
Serial Volume: 16
Serial Issue: 2
Title: Quantification of fluid saturations in transparent porous media
Affiliation: Queen's University, Department of Civil Engineering, Kingston, ON, Canada
Published: 201702
Text Language: English
Publisher: Soil Science Society of America, Madison, WI, United States
Number of pages: 9
References: 31
Accession Number: 2017-023497
Categories: Hydrogeology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Secondary Affiliation: Royal Military College of Canada, CAN, Canada
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Soil Science Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201715
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