Scenario simulations of CO(2) injection feasibility, plume migration and storage in a saline aquifer, Scania, Sweden
2011 (English)In: International Journal of Greenhouse Gas Control, ISSN 1750-5836, Vol. 5, no 5, 1303-1318 p.Article in journal (Refereed) Published
Deep saline aquifers have large capacity for geological CO(2) storage, but are generally not as well characterized as petroleum reservoirs. We here aim at quantifying effects of uncertain hydraulic parameters and uncertain stratigraphy on CO(2) injectivity and migration, and provide a first feasibility study of pilot-scale CO(2) injection into a multilayered saline aquifer system in southwest Scania, Sweden. Four main scenarios are developed, corresponding to different possible interpretations of available site data. Simulation results show that, on the one hand, stratigraphic uncertainty (presence/absence of a thin mudstone/claystone layer above the target storage formation) leads to large differences in predicted CO(2) storage in the target formation at the end of the test (ranging between 11% and 98% of injected CO(2) remaining), whereas other parameter uncertainty (in formation and cap rock permeabilities) has small impact. On the other hand, the latter has large impact on predicted injectivity, on which stratigraphic uncertainty has small impact. Salt precipitation at the border of the target storage formation affects CO(2) injectivity for all considered scenarios and injection rates. At low injection rates, salt is deposited also within the formation, considerably reducing its availability for CO(2) storage.
Place, publisher, year, edition, pages
2011. Vol. 5, no 5, 1303-1318 p.
CO(2) injection test, Geological storage, Saline aquifer, Multilayered system, Numerical simulation, Southwest Scania
IdentifiersURN: urn:nbn:se:kth:diva-46863DOI: 10.1016/j.ijggc.2011.06.003ISI: 000295300700020ScopusID: 2-s2.0-80052157355OAI: oai:DiVA.org:kth-46863DiVA: diva2:454330
FunderSwedish e‐Science Research Center
QC 201110072011-11-072011-11-072012-05-23Bibliographically approved