Gas Bubble Nucleation and Migration in Soils—Pore-Network Model Simulation

Nariman Mahabadi, Xianglei Zheng, Tae Sup Yun, Jaewon Jang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Sediment can be de-saturated by introducing gas bubbles, which is found in various applications such as methane gas generation in landfill, microbial-induced gas bubble formation, air sparing method for soil remediation, heavy oil depressurization for carbon recovery, and gas production from hydrate bearing sediment. The gas introduction method (e.g., nucleation and injection) and migration and trapping of gas bubbles affect the hydraulic conductivity, residual gas saturation, and the stability of these gassy sediments. In this study, the pore-network model is used to investigate gas bubble migration in porous media. Gas bubbles are introduced by mimicking either nucleation or injection. Based on the known gas bubble behavior available in the literature, numerical algorithms are developed to simulate the migration and trapping of gas bubbles in pore-network model. The effect of gas bubble size distribution and pore size distribution on residual saturation is investigated. The results show that gas bubble size distribution becomes wider as gas bubbles coalesce to each other during migration. And the residual gas saturation increase with increasing bubble size and permeability reduction becomes apparent as the gas bubble size and the number of generated gas bubble increase.

Original languageEnglish
Title of host publicationNew Solutions for Challenges in Applications of New Materials and Geotechnical Issues - Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes
Subtitle of host publicationFrom Failure to Sustainability, 2018 in HangZhou, China
EditorsShuying Wang, Yu Xinbao, Moses Tefe
PublisherSpringer Science and Business Media B.V.
Pages27-37
Number of pages11
ISBN (Print)9783319957432
DOIs
Publication statusPublished - 2019
Event5th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, 2018 - HangZhou, China
Duration: 2018 Jul 232018 Jul 25

Publication series

NameSustainable Civil Infrastructures
ISSN (Print)2366-3405
ISSN (Electronic)2366-3413

Conference

Conference5th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, 2018
Country/TerritoryChina
CityHangZhou
Period18/7/2318/7/25

Bibliographical note

Publisher Copyright:
© 2019, Springer International Publishing AG, part of Springer Nature.

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Computational Mechanics
  • Geotechnical Engineering and Engineering Geology
  • Environmental Engineering

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