Residual Fluid Blobs and Contact Angle Measurements ...

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XVI International Conference on Computational Methods in Water Resources (CMWR-XVI) Ingeniørhuset

Residual Fluid Blobs and Contact Angle Measurements from X-Ray Images of Fluid Displacement
Paper
Author:Masa Prodanovic <masha@ices.utexas.edu> (Institute for Computational and Engineering Sciences, University of Texas at Austin)
W. Brent Lindquist <lindquis@ams.sunysb.edu> (Department of Applied Mathematics and Statistics, Stony Brook University)
Randall S. Seright <randy@prrc.nmt.edu> (New Mexico Petroleum Recovery Research Center, New Mexico Institute of Mining and Technology)
Presenter:Masa Prodanovic <masha@ices.utexas.edu> (Institute for Computational and Engineering Sciences, University of Texas at Austin)
Date: 2006-06-18     Track: Special Sessions     Session: Pore-Scale Modelling: New Developments And Applications
DOI:10.4122/1.1000000404
DOI:10.4122/1.1000000405

Over the past decade a growing number of high resolution, three-dimensional CT images of multiphase porous media systems have become available, as well as the number of algorithms to analyze both the pore space and the fluid partitioning imaged within the voids. We describe the challenge in identifying triple points (points with three phases in contact) and an algorithm for fluid contact angle measurement from a multiphase digitized image. Despite the challenges and limitations on vertex positions in isosurfaces determined from a segmented multiphase image, the contact angle algorithm showed satisfactory ability to identify small angles when tested on an analytic example and gave results in agreement with the experimental wettability measurements for a well-studied Berea sandstone sample. We furthermore present visualization of the residual fluid blobs from the same sample and their qualitative behaviour which is in agreeement with conventional wisdom.