Transport modeling at multiple scales for the Illinois Basin - Decatur Project

The application of reactive-transport models is essential to understand and predict the impacts of carbon dioxide (CO2) storage in deep saline reservoirs. This study was conducted to generate preliminary information in support of the Illinois Basin - Decatur Project (IBDP) using two model... Ausführliche Beschreibung

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doi: 10.1002/ghg.1424
Autoren:Roy, W.R.; Mehnert, E.; Berger, P.M.; Damico, J.R.; Okwen, R.T.
Volumen Titel:Illinois Basin - Decatur Project
Volume Authors:Greenberg, S., editor
Quelle:Illinois Basin - Decatur Project, edited by S. Greenberg. Greenhouse Gases: Science and Technology, 4(5), p.645-661. Publisher: John Wiley & Sons, Sussex, United Kingdom. ISSN: 2152-3878
Publikationsdatum:2014
Hinweis:In English. 28 refs.; illus., incl. 7 tables
Schlagworte:Brines; Cambrian; Cap rocks; Carbon dioxide; Carbon sequestration; Clastic rocks; Diffusivity; Eau Claire Formation; Fluid dynamics; Kinetics; Models; Mount Simon Sandstone; Numerical models; Paleozoic; Permeability; Porous materials; Reactive transport; Reservoir properties; Reservoirs; Saturation; Sedimentary rocks; Shale; Simulation; Stratigraphy; Transport; Upper Cambrian; Illinois; Illinois Basin; United States; Decatur Project; TOUGHREACT
Datensatz-ID:2015033591
Urheberrechtsinformationen:GeoRef, Copyright 2020 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom
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Beschreibung
The application of reactive-transport models is essential to understand and predict the impacts of carbon dioxide (CO2) storage in deep saline reservoirs. This study was conducted to generate preliminary information in support of the Illinois Basin - Decatur Project (IBDP) using two modeling approaches: (i) flow and transport modeling of CO2 at the basin scale, and (ii) geochemical modeling of CO2-saturated brine interactions with the primary seal at the IBDP. Using the TOUGH2-MP simulator, a flow and transport approach was developed to evaluate possible impacts of carbon sequestration at the basin scale. These modeling results should provide useful geologic and hydrogeologic data for future developers of carbon sequestration projects in the Illinois Basin and serve as a template for evaluating geologic carbon sequestration in other deep saline reservoirs. The modeling results demonstrated the significance of the geologic model for understanding the distribution of CO2 and the predicted pressure changes with time. Geochemical modeling was applied to further understand potential interactions of CO2-saturated brine with the Eau Claire Shale. Geochemical simulations were conducted using TOUGHREACT, a numerical simulator that includes reactive chemistry, and Geochemist's Workbench(Registered trademark), which contains kinetic and reactive-transport modules. Simulations conducted for a 1000-year time frame yielded a decrease in porosity throughout the profile because of mineral precipitation. It was concluded that the rate by which ions diffuse into the caprock had little impact on changes in porosity when compared to the rates of mineral reaction. Abstract Copyright (2014), John Wiley & Sons, Ltd.