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Exploring fissure opening and their connectivity in a Cenozoic clay during gas injection

Conference Paper (2017)
Author(s)

Laura Gonzalez-Blanco (Universitat Politecnica de Catalunya)

Enrique Romero (Universitat Politecnica de Catalunya)

Cristina Jommi (TU Delft - Civil Engineering & Geosciences)

Xavier Sillen (Belgian Agency for Radioactive Waste and Enriched Fissile Materials)

Xiangling Li (EIG Euridice)

Research Group
Geo-engineering
DOI related publication
https://doi.org/10.1007/978-3-319-52773-4_33 Final published version
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Publication Year
2017
Language
English
Research Group
Geo-engineering
Pages (from-to)
288-295
Publisher
Springer
ISBN (print)
9783319527727
Event
International Workshop on Advances in Laboratory Testing and Modelling of Soils and Shales, ATMSS 2017 (2017-01-18 - 2017-01-20), Villars-sur-Ollon, Switzerland
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144

Abstract

Gas transport properties in argillaceous rocks are becoming an important issue within different contexts of energy-related geomechanics (disposal of radioactive waste, production of shale gas, CO2 sequestration). The present investigation aims at describing the pathways generated on a deep Cenozoic clay during gas injection using different microstructural techniques. Mercury intrusion porosimetry results have allowed detecting fissures after gas injection tests that have not been observed on intact samples. The opening of these pressure-dependent fissures plays a major role on gas permeability. A complementary insight into the connectivity of these fissures has been quantified by micro-computed tomography.