Gas migration process in deformable clay formations

Introduction To predict the evolution of a Geological Disposal Facility, it is necessary to understand the interaction between a number of key features and process and its impact on the long-term behaviour. Central to these issues are the mechanisms and process that govern the movement of gases in a repository. Linking the gas transport to the stress-strain response of the engineering systems barriers remains challenging particularly from an experimental point of view. Therefore, this paper aims to shed light on the volume change response of different potential host clayey rocks -Boom Clay formation from Belgium and Opalinus Clay and ‘Brauner Dogger’ formations from Switzerlandduring gas injection and dissipation experiments though a comparative study.