HR: 1340h
AN: H13F-1648    [Abstracts]
TI: Reactive Transport Modeling of Supercritical Carbon Dioxide Injection Into Mafic Rock Reservoirs
AU: * Podgorney, R
EM: robert.podgorney@inl.gov
AF: Idaho National Laboratory, PO Box 1625 / MS 2107, Idaho Falls, ID 83404, United States
AU: Hull, L
EM: laurence.hull@inl.gov
AF: Idaho National Laboratory, PO Box 1625 / MS 2107, Idaho Falls, ID 83404, United States
AU: Huang, H
EM: hai.huang@inl.gov
AF: Idaho National Laboratory, PO Box 1625 / MS 2107, Idaho Falls, ID 83404, United States
AU: McLing, T
EM: travis.mcling@inl.gov
AF: Idaho National Laboratory, PO Box 1625 / MS 2107, Idaho Falls, ID 83404, United States
AB: Technologies to reduce emissions of greenhouse gases and increase the sequestration of CO2 have received increasing attention since the development of the Kyoto protocol. One promising technology is the sequestration of CO2 in geologic formations. The suitability of a fractured basalt reservoir for CO2 sequestration is constrained by three broad categories of issues, which we refer to as physical, technical, and economic constraints. Physical constraints are beyond human control; thus, it is a requirement that a systematic method be developed by which a particular target reservoir may be evaluated to determine if it lies within the bounds required for safe and effective disposal. Technical constraints, on the other hand, are challenges to the ability to design, construct, and/or monitor a sequestration project as a result of limitations on our ability to determine the distribution of properties in the subsurface, our knowledge of the behavior of CO2 in the deep subsurface, and the current state of computational science and subsurface monitoring. Equally important are the heterogeneity of economic costs associated with sequestering CO2 at different sites and within different formations. The work presented here focuses on the technical aspects of CO2 injection, specifically examining reactive transport of CO2 in the subsurface in the vicinity of the injection well using the simulation code TOUGHREACT. Pressure distribution and propagation, kinetics of the geochemical reactions, and resultant changes in permeability/porosity are examined in order to evaluate injection scenarios that maximize the longevity of the injection well and sustainability of the reservoir.
DE: 1009 Geochemical modeling (3610, 8410)
DE: 1847 Modeling
SC: Hydrology [H]
MN: 2007 Fall Meeting