Air injection tests in two argillaceous rock formations : experimental results and modelling

Xiang Ling Li, Enrique Romero, Laura González Blanco, Xavier Sillen, Paul Marschall, Cristina Jommi

    Research outputpeer-review


    Air flow through two argillaceous rock formations is investigated on the basis of laboratory work and its modelling to help in the interpretation of the results. Priority in the experimental program has been given to study the volume change response of these initially water saturated materials along relatively fast and controlled volume rate air injections. These high rates intend to give preference to single-phase air flow mechanisms associated with the opening of stress-dependent pathways. Particular attention has been focused on the changes in the pore network to detect opening of fissures after air injection tests using mercury intrusion porosimetry. Selected experimental results have been simulated using a fully coupled hydromechanical finite element code, which incorporates an embedded fracture permeability model to account for the simulation of the gas flow along preferential pathways.
    Original languageEnglish
    Title of host publicationEnergy Geotechnics
    Subtitle of host publicationChapter 97 - Air injection tests in two argillaceous rock formations: Experimental results and modelling
    EditorsFrank Wuttke, Sebastian Bauer, Marcelo Sanchez
    PublisherTaylor & Francis (CRC)
    Number of pages8
    ISBN (Electronic)978-1-315-31523-2
    ISBN (Print)978-1-138-03299-6
    StatePublished - 1 Jun 2016

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