Refereed Journal Publications
(published or in press, i.e., accepted)
Randolph*, J.B., and M.O. Saar, Impact of reservoir permeability
on the choice of subsurface geothermal heat exchange fluid: CO2 versus water and native brine,
GRC Transactions, in press since May 21, 2011.
PDF | Funding: IREE, DE-EE0002764
Randolph, J.B., and M.O. Saar, Combining geothermal energy capture
with geologic carbon dioxide sequestration, Geophys. Res. Lett., 38, L10401,
doi:10.1029/2011GL047265, 2011.
PDF |
Funding: IREE, DE-EE0002764
Randolph, J.B. and M.O. Saar, Coupling carbon dioxide sequestration
with geothermal energy capture in naturally permeable, porous geologic formations: Implications
for CO2 sequestration, Energy Procedia, 4, 2206-2213, DOI: 10.1016/j.egypro.2011.02.108, 2011.
PDF |
Funding: IREE, DE-EE0002764
Saar, M.O., Review: Geothermal heat as a tracer of large-scale groundwater flow and as a
means to determine permeability fields, special theme issue on Environmental Tracers and
Groundwater Flow, editor-invited peer-reviewed contribution, Hydrogeology Journal, 19:31-52,
DOI 10.1007/s10040-010-0657-2, 2011. A Hydrogeology Journal Editor's Choice Article for 2011.
PDF |
Funding: NSF-EAR-0838541, NSF-DMS-0724560, NSF-EAR-0941666, DE-EE0002764
Randolph, J.B. and M.O. Saar, Coupling geothermal energy capture with carbon dioxide
sequestration in naturally permeable, porous geologic formations: A comparison with enhanced geothermal systems,
Geothermal Research Council Transactions, 34, 433-438, 2010.
PDF
Funding: DOE-DE-EE0002764, IREE
Saar, M.O., M.C. Castro, C.M. Hall, M. Manga, and T.P. Rose,
Quantifying magmatic, crustal, and atmospheric Helium contributions
to volcanic aquifers using all stable noble gases: Implications for magmatism
and groundwater flow, Geochemistry Geophysics Geosystems, Vol. 6, Nr. 3,
Q03008, DOI:10.1029/2004GC000828, 2005.
PDF |
Funding: U. of Michigan Turner Postdoctoral Fellowship and UCRP, LLNL
Non-Refereed Publications
(theses, dissertations, reports)
Randolph, J.B.,, Coupling geothermal energy capture with carbon dioxide
sequestration in naturally permeable, porous geologic formations - a novel approach for expanding
geothermal energy utilization, Ph.D. Dissertation, 211 pp.,
University of Minnesota - Minneapolis, 2011. Dissertation Adviser: M.O. Saar
pdf-dissertation (19.8 MB)
Randolph, J.B., and M.O. Saar, Preliminary numerical modeling of CO2
injection and storage in deep saline aquifers: Current research, scenarios, and required data,
in Potential capacity for geologic carbon sequestration in the Midcontinent Rift
System in Minnesota, Thorleifson, L. H., ed., Minnesota Geological Survey Open
File Report OFR-08-01, 138 p, 2008.
pdf-report (7.4 MB)
Andrews, J.L., and M.O. Saar,
Coupling and decoupling of heat and helium transport in a geothermal reservoir,
Proceedings, TOUGH Symposium 2006, Lawrence Berkeley National Laboratory, Berkeley,
CA, 9 p., May 15-17, 2006.
pdf-proceedings (867 KB)
Abstracts
(for conference presentations as talks or posters)
2011
Luhmann*, A.J., K. Ding*, M.O. Saar, and W.E. Seyfried,
Effects of small-scale chemical reactions between supercritical CO2 and
arkosic sandstone on large-scale permeability fields: An experimental
study with implications for geologic carbon sequestration,
American Geophysical Union (AGU) Abstract, San Francisco Conference, 2011.
Tutolo, B.M., W.E. Seyfried, and M.O. Saar,
An Assessment of Thermodynamic Database Effects on Reactive Transport
Models' Predictions of Permeability Fields: Insights from CO2/Brine Experiments,
American Geophysical Union (AGU) Abstract, San Francisco Conference, 2011.
Saar, M.O., and J.B. Randolph*, Multicomponent CO2-Brine
Simulations of Fluid and Heat Transfer in Sedimentary-Basin Geothermal
Systems: Expanding Geothermal Energy Opportunities, American Geophysical
Union (AGU) Abstract, San Francisco Conference, 2011.
Kong*, X., and M.O. Saar, Effects of Permeability
Heterogeneity on Density-driven Convection during CO2 Dissolution
Storage in Saline Aquifers, American Geophysical Union (AGU) Abstract,
San Francisco Conference, 2011.
Saar, M.O., Multiphase, multicomponent simulations and
experiments of reactive flow, relevant for combining geologic CO2
sequestration with geothermal energy capture, Bulletin of the
American Physical Society, 64th Annual Meeting of the APS Division
of Fluid Dynamics, Volume 56, Number 18, 2011.
Bordoloi, A.D., E.K. Longmire, Kong*, X.,
and M.O. Saar, Investigation of drop motion through circular
orifices, Bulletin of the American Physical Society, 64th Annual
Meeting of the APS Division of Fluid Dynamics, Volume 56, Number 18, 2011.
Saar, M.O., Combining Geothermal Energy Capture with CO2 Sequestration,
E3 Conference, Institute on the Environment (IonE), Initiatitive for Renewable
Energy and the Environment (IREE), University of Minnesota, Minneapolis, Nov. 7,
2011.
Randolph*, J.B., and M.O. Saar, Impact of reservoir
permeability on the choice of subsurface geothermal heat exchange fluid:
CO2 versus water and native brine,
Geothermal Resources Council Annual Meeting, October 25, 2011.
Kong*, X., and M.O. Saar, An evaluation of relative
permeability and the capillary pressure-saturation relationship in
porous media lattice-Boltzmann methods, Geological Society of America (GSA),
Abstracts with Programs, Vol. 43, No. 5, p. 80, 2011.
Randolph*, J.B., and M.O. Saar, Carbon-dioxide plume
geothermal (CPG) systems, an alternative engineered geothermal system (EGS):
Net energy production potential compared to traditional water-based
geothermal systems, Geological Society of America (GSA), Abstracts with
Programs, Vol. 43, No. 5, p. 40, 2011.
Tutolo, B.M., W.E. Seyfried Jr., M.O. Saar, A
comparison between popular geochemical thermodynamic data sets and
near-equilibrium experimental data, Geological Society of America (GSA),
Abstracts with Programs, Vol. 43, No. 5, p. 108, 2011.
Toot, R.K., B. Tutolo, J.B. Randolph, S.A. Alexander*,
J. Nelson, M.O. Saar, A Comparison of the Wheatstone Bridge and
Kelvin Connection for High-Precision Temperature Versus Depth, Geotherm,
Measurements, Minnesota Groundwater Association Conference, May 2011.
Saar, M.O., B. Adams, J. Bielicki, B. Janke, T. Kuehn,
A. Mevison, C. Parker, M. Pollak, J.B. Randolph,
A. Smale, S. Taff, and E. Wilson, Carbon dioxide plume
geothermal (CPG) energy: Making electricity (and $$) from geologic
sequestration of carbon dioxide, 10th Annual Conference on Carbon
Capture and Sequestration, Pittsburgh, USA, May 2-5, 2011.
Randolph, J.B., and M.O. Saar, Coupling geothermal
energy capture with carbon dioxide sequestration in naturally permeable,
porous geologic formations - a novel approach for expanding and
enhancing geothermal energy utilization - and related fundamental topics
regarding fluid and heat flow in porous and fractured geologic media, Doctoral
Dissertation Fellowship Presentation, University of Minnesota, April 2011.
2010
Saar, M.O. and W.E. Seyfried, Jr., Toward development of parameters for permeability field
variations due to fluid-rock reactions during geologic CO2 sequestration, submitted as
American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.
Randolph, J.B. and M.O. Saar, Carbon-dioxide plume geothermal (CPG) systems, an
alternative engineered geothermal system (EGS) that does not require hydrofracturing: Comparison with
traditional EGS regarding geologic reservoir heat energy extraction and potential for inducing seismicity,
submitted as American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.
Walsh*, S.D.C., M.O. Saar, and J.B. Randolph, Pore-scale lattice-Boltzmann fluid flow
simulations in super-critical CO2/brine/rock systems using graphics processing units, submitted as
American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.
Randolph, J.B. and M.O. Saar, Using CO2 sequestration or enhanced oil and gas recovery
to enhance geothermal resources, submitted as GSA Abstracts with Programs Vol. 42, No. 5, 2010.
Nelson, J.M., M.O. Saar, and J.B. Randolph,
Numerical simulation of supercritical CO2 plume evolution in the Illinois
Basin and geothermal heat flow study of Minnesota, NSF-REU
intern postern presentation, Department of Geology and Geophysics,
University of Minnesota, August 12, 2010.
Randolph, J.B. and M.O. Saar, Coupling carbon dioxide sequestration with geothermal
energy capture in naturally permeable, porous geologic formations: Implications for CO2 sequestration, International Conference
on Greenhouse Gas Technologies (GHGT-10) , Amsterdam, Netherlands, Abstract,
Sep. 19-23, 2010.
2009
Saar, M.O., and J. Randolph, Coupling geothermal energy capture with carbon dioxide
sequestration in permeable, porous geologic formations I: Overview and discussion, Eos Trans. AGU,
Fall Meet. Suppl., Abstract, 2009.
J. Randolph, and M. O. Saar, Coupling geothermal energy capture with carbon dioxide
sequestration in permeable, porous geologic formations II: Numerical modeling and preliminary results,
Eos Trans. AGU, Fall Meet. Suppl., Abstract, 2009.
Saar, M.O. and J. Randolph, Coupling carbon dioxide sequestration with
geothermal energy capture, Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p.
173, 2009.
Randolph, J., and M.O. Saar, TOUGH2 modeling of coupled CO2 fluid flow and heat
transfer in geothermal reservoirs with CO2 as working fluid, TOUGH Symposium 2009,
Lawrence Berkeley National Laboratory, Berkeley, CA, Sep. 14-16, 2009.
2008
Randolph, J.B., and M.O. Saar,
Geologic CO2 sequestration in saline aquifers accounting for dual
permeability/porosity environments,
Eos Trans. AGU, Fall Meet. Suppl., 2008.
2007
Randolph, J., M.O. Saar, C. Farrar, and S. Hurwitz, Using Transient
Temperature-Depth Data to Constrain Groundwater Flow Velocities in Thermal Aquifers of Long
Valley Caldera, California, Eos Trans. AGU, Fall Meet. Suppl.,
Abstract H33M-06, talk, 2007.
2006
Andrews, J.L., M.O. Saar, and S. Finsterle, Heat and Helium Transport: The Effect
of Subsurface Processes on Near-Surface Signals, Eos Trans. AGU, Fall Meet. Suppl., Abstract H43A-0477,
2006.
Saar, M.O., and J.L. Andrews, Groundwater as a Sampling Tool and Transfer Function
for Magmatic Heat and Gases to Constrain Hot Spot Dynamics, Eos Trans. AGU, Fall Meet. Suppl., Abstract
V51D-1701, 2006.
Hurwitz, S., C.D. Farrar, J. Randolph, and M.O. Saar, Anomalous Hydrothermal
Activity in Hot Creek Gorge Area, Long Valley Caldera, California, USA, Eos Trans. AGU, Fall Meet. Suppl., Abstract
V53A-1742, 2006.
Andrews, J.L., and M.O. Saar, Modeling of helium and heat transport
in an extensional basin using the noble gas module EOSN in TOUGH2, submitted to the
TOUGH2 Symposium, Lawrence Berkeley National Laboratory, Berkeley, CA, May 15-17, 2006.
2005
Saar, M.O., Helium isotopes as a natural tracer in volcanic and non-volcanic
aquifers, MGWA fall conference, Nov. 18, 2005.
Hurwitz, S., M.O. Saar, L. Mastin, and J. Major, Volcano Hydrology,
special session at the AGU Spring meeting in New Orleans, May 23-27, 2005.
2004
Saar, M.O., M.C. Castro, C.M. Hall, M. Manga, and T.P. Rose, Mantle
Contributions to Groundwater in the Oregon Cascades and Eastern Oregon
Inferred from Helium Isotopes, GSA National Meeting - Denver, Vol. 36,
Nr. 5, p. 469 (talk 202-6), Nov. 7-10, 2004.
|
Return
to: U of M Home
