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The Dependence of Electrical Resistivity-Saturation Relationships on Multiphase Flow Instability
Joint Authors
Liu, Zoulin
Moysey, Stephen M. J.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-10-17
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Earth Science , Water and Environment
Physics
Abstract EN
We investigate the relationship between apparent electrical resistivity and water saturation during unstable multiphase flow.
We conducted experiments in a thin, two-dimensional tank packed with glass beads, where Nigrosine dyed water was injected uniformly along one edge to displace mineral oil.
The resulting patterns of fluid saturation in the tank were captured on video using the light transmission method, while the apparent resistivity of the tank was continuously measured.
Different experiments were performed by varying the water application rate and orientation of the tank to control the generalized Bond number, which describes the balance between viscous, capillary, and gravity forces that affect flow instability.
We observed the resistivity index to gradually decrease as water saturation increases in the tank, but sharp drops occurred as individual fingers bridged the tank.
The magnitude of this effect decreased as the displacement became increasingly unstable until a smooth transition occurred for highly unstable flows.
By analyzing the dynamic data using Archie’s law, we found that the apparent saturation exponent increases linearly between approximately 1 and 2 as a function of generalized Bond number, after which it remained constant for unstable flows with a generalized Bond number less than −0.106.
American Psychological Association (APA)
Liu, Zoulin& Moysey, Stephen M. J.. 2012. The Dependence of Electrical Resistivity-Saturation Relationships on Multiphase Flow Instability. ISRN Geophysics،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-459139
Modern Language Association (MLA)
Liu, Zoulin& Moysey, Stephen M. J.. The Dependence of Electrical Resistivity-Saturation Relationships on Multiphase Flow Instability. ISRN Geophysics No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-459139
American Medical Association (AMA)
Liu, Zoulin& Moysey, Stephen M. J.. The Dependence of Electrical Resistivity-Saturation Relationships on Multiphase Flow Instability. ISRN Geophysics. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-459139
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-459139