English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/156435
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Long-term thermal effects on injectivity evolution during CO2 storage

AutorVilarrasa, Víctor; Rinaldi, Antonio Pio; Rutqvist, Jonny
Palabras claveCooling
Fracture aperture
Permeability increase
Thermo-hydro-mechanical coupling
Fecha de publicaciónsep-2017
EditorElsevier
CitaciónInternational Journal of Greenhouse Gas Control 64: 314-322 (2017)
ResumenCarbon dioxide (CO2) is likely to reach the bottom of injection wells at a colder temperature than that of the storage formation, causing cooling of the rock. This cooling, together with overpressure, tends to open up fractures, which may enhance injectivity. We investigate cooling effects on injectivity enhancement by modeling the In Salah CO2 storage site and a theoretical, long-term injection case. We use stress-dependent permeability functions that predict an increase in permeability as the effective stress acting normal to fractures decreases. Normal effective stress can decrease either due to overpressure or cooling. We calibrate our In Salah model, which includes a fracture zone perpendicular to the well, obtaining a good fitting with the injection pressure measured at KB-502 and the rapid CO2 breakthrough that occurred at the observation well KB-5 located 2 km away from the injection well. CO2 preferentially advances through the fracture zone, which becomes two orders of magnitude more permeable than the rest of the reservoir. Nevertheless, the effect of cooling on the long-term injectivity enhancement is limited in pressure dominated storage sites, like at In Salah, because most of the permeability enhancement is due to overpressure. However, thermal effects enhance injectivity in cooling dominated storage sites, which may decrease the injection pressure by 20%, saving a significant amount of compression energy all over the duration of storage projects. Overall, our simulation results show that cooling has the potential to enhance injectivity in fractured reservoirs. © 2017 Elsevier Ltd
Versión del editor10.1016/j.ijggc.2017.07.019
URIhttp://hdl.handle.net/10261/156435
DOI10.1016/j.ijggc.2017.07.019
Aparece en las colecciones: (IDAEA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Long-term thermal effects on injectivity evolution during CO2 storage.pdf Embargado hasta 1 de octubre de 20192,05 MBAdobe PDFVista previa
Visualizar/Abrir     Petición de una copia
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.