EXPERIMENTAL MODELING OF FREE GAS BUBBLE TRANSPORT IN A WATER-SATURATED SANDY POROUS MEDIUM
https://doi.org/10.26006/29490995_2025_17_4_30
Abstract
This study presents the results of experimental modeling of free gas bubble transport in a water-saturated sandy porous medium. The main focus is on the development and validation of an original laboratory technique based on an optically transparent flat micromodel that enables visualization of gas saturation distribution through digital image processing. It is shown that when a gas bubble passes through the saturated sand sample, a conductive channel is formed, accompanied by a sharp increase in fluid flow, while residual gas saturation remains within the pore space. In single-bubble experiments, the residual gas saturation was independent of the bubble volume, whereas in sequential injections of multiple bubbles it stabilized at about 0.25. No significant deviations from linear filtration roperties were observed. The obtained results are of methodological significance and can be used to refine the parameters of two-phase flow models applied to numerical simulations of gas transport in Arctic shelf sediments.
About the Authors
N. A. Baryshnikov
Sadovsky Institute of Geospheres Dynamics of Russian Academy of Sciences
Russian Federation
Russian Federation
P. E. Zenchenko
Sadovsky Institute of Geospheres Dynamics of Russian Academy of Sciences
Russian Federation
Russian Federation
N. A. Yudochkin
Sadovsky Institute of Geospheres Dynamics of Russian Academy of Sciences
Russian Federation
Russian Federation
E. V. Zenchenko
Sadovsky Institute of Geospheres Dynamics of Russian Academy of Sciences
Russian Federation
Russian Federation
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For citations:
Baryshnikov N.A., Zenchenko P.E., Yudochkin N.A., Zenchenko E.V. EXPERIMENTAL MODELING OF FREE GAS BUBBLE TRANSPORT IN A WATER-SATURATED SANDY POROUS MEDIUM. Dynamic Processes in Geospheres. 2025;17(4):30-43. (In Russ.) https://doi.org/10.26006/29490995_2025_17_4_30
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