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Title

MODELING A LONG-TERM CO2 INJECTION EXPERIMENT AT THE UNDERGROUND ROCK LABORATORY OF MONT TERRI

AuthorsVilarrasa, Víctor; Rebscher, Dorothee; Makhnenko, Roman Y.
KeywordsHM coupled analysis
Fluid injection
Geologic Carbon Storage
Geo-energies
Caprock Integrity,
Opalinus clay
Issue DateMay-2019
Citation11st Workshop of CODE_BRIGHT Users, UPC, Barcelona, Spain, 16 May 2019
AbstractGeologic carbon storage is considered as a key technology to reach zero emissions by 2050 in order to meet the objective of the Paris Agreement of limiting temperature increase below 2 ºC. Yet, a number of concerns exist about the long-term caprock integrity to permanently storing CO2 in deep geological formations. To gain knowledge on the sealing properties of clay-rich geomaterials that serve as caprock, field experiments in underground research laboratories are required. Here, we present preliminary results of the modeling of a long-term CO2 injection experiment into Opalinus Clay (shale) at Mont Terri, Switzerland. Simulation results show that the high entry pressure hinders CO2 penetration in free phase into the shale, but CO2 does get into Opalinus Clay dissolved into the resident pore water. The presence of fractures in the caprock provide preferential paths for pressure propagation and for CO2 migration provided that the CO2 entry pressure is low enough to permit CO2 entering into it. The modeling of the experiment is ongoing in order to define the design of the experiment.
URIhttp://hdl.handle.net/10261/183578
Appears in Collections:(IDAEA) Cursos-Material didáctico
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