Petrologic and petrophysical evaluation of the Dallas Center Structure, Iowa, for compressed air energy storage in the Mount Simon Sandstone. Page: 3 of 89
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SAND2013-0027
Unlimited Release
Printed March 2013
Petrologic and Petrophysical Evaluation of the
Dallas Center Structure, Iowa, for Compressed
Air Energy Storage in the Mount Simon
Sandstone
Jason E. Heath', Stephen J. Bauer', Scott T. Broome', Thomas A. Dewers', and
Mark A. Rodriguez2
Departments of 'Geomechanics and 2Materials Characterization
Sandia National Laboratories
P.O. Box 5800
Albuquerque, New Mexico 87185-0750
Abstract
The Iowa Stored Energy Plant Agency selected a geologic structure at Dallas Center,
Iowa, for evaluation of subsurface compressed air energy storage. The site was
rejected due to lower-than-expected and heterogeneous permeability of the target
reservoir, lower-than-desired porosity, and small reservoir volume. In an initial
feasibility study, permeability and porosity distributions of flow units for the nearby
Redfield gas storage field were applied as analogue values for numerical modeling of
the Dallas Center Structure. These reservoir data, coupled with an optimistic reservoir
volume, produced favorable results. However, it was determined that the Dallas
Center Structure cannot be simplified to four zones of high, uniform permeabilities.
Updated modeling using field and core data for the site provided unfavorable results
for air fill-up. This report presents Sandia National Laboratories' petrologic and
petrophysical analysis of the Dallas Center Structure that aids in understanding why
the site was not suitable for gas storage.
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Heath, Jason E.; Bauer, Stephen J.; Broome, Scott Thomas; Dewers, Thomas A. & Rodriguez, Mark Andrew. Petrologic and petrophysical evaluation of the Dallas Center Structure, Iowa, for compressed air energy storage in the Mount Simon Sandstone., report, March 1, 2013; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc828917/m1/3/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.