susan carroll, megan smith, yuehao, and harris mason library/events/2017/carbon-storage... ·...
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This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. Lawrence Livermore National Security, LLC
Susan Carroll, Megan Smith, Yue Hao, and Harris MasonLynn Watney (et al.), KGS, Jessie Maisano, UT Austin CT Lab, Rachel Lindvall, Zurong Dai, LLNL, Lee Spangler and Stacey Fairweather, Big Sky CSP
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Lawrence Livermore National Laboratory
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Lawrence Livermore National Laboratory
Kansas, USAimages: www.ptrc.ca
Weyburn, Canada
We derived key reactive-transport parameters and
ranges for carbonate rocks over a wide range
of heterogeneity and initial permeability
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Lawrence Livermore National Laboratory
XCMT core scanning Constant flowrate brine/CO2core-flooding experiments Post-rxn core scans
Additional corestatistics (SEM)
Reactive flow modelingFluid chemistry
analyses
NMRscanning
NMRscanning
4
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Lawrence Livermore National Laboratory
Unstable Dissolution Fronts
Stable Dissolution Fronts
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Lawrence Livermore National Laboratory
Greater permeability change with limestone
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Lawrence Livermore National Laboratory
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Lawrence Livermore National Laboratory www.bigskyco2.org/kevin_dome_site_characterization
Dolomite5% ϕ and low k
• CHARACTERIZATIONX-ray CT, XRD, SEM, NMR
• FORWARD MODELING• REACTIVE EXPERIMENT• MODEL – DATA COMPARISON
Mixed carbonate 17% ϕ and high k
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Lawrence Livermore National Laboratory
3.81 cm (1.5 in)
Before
7.6
cm (1
.5 in
)
Calibrate the initial model permeability against the experiment.
Run simulations spanning model parameters (n, k)
Compare simulated and measured results
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Lawrence Livermore National Laboratory
high permfractures
medium permboundary walls
low permdense matrix
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Lawrence Livermore National Laboratory
n = 1 3 8
kdol = 10-8
10-7
10-6
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Lawrence Livermore National Laboratory
n = 1
kdol = 10-8
3.81 cm (1.5 in)
Experiment7.
6 cm
(1.5
in)
Simulation
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Lawrence Livermore National Laboratory
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Lawrence Livermore National Laboratory
1 km – high k
1 km – moderate k
1 km – very low k
1.3 km – expected high k
Initial permeability= 0.5 mD
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Lawrence Livermore National Laboratory 15
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Lawrence Livermore National Laboratory
• Model is calibrated against experiment• Brute force calculation to maintain same resolution as experiment
• 250 million grid blocks • 4096 cores • 1,000 times increase in rock volume • 20 times increase in reaction time
0.5
Met
er
30 M
illim
eter
at 1700 hours after injection
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Lawrence Livermore National Laboratory
pressure change
bulk porosity change
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Lawrence Livermore National Laboratory
Grid coarsening requires an increase in permeabil power “n” and a decrease available reactive surface to retain major flow paths
fine-scaledx = 0.5 mm
n = 8
25xdx =12.5 mm
n = 11
1700 hours
50xdx =25 nm
n = 12
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Lawrence Livermore National Laboratory
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Lawrence Livermore National Laboratory20
Derived key reactive-transport parameters and ranges for carbonate rocks over a wide range of heterogeneity and initial permeability
Conducting a validation study using core from an independent CO2 storage formation
Using numerical methods to scale laboratory parameters to reservoir
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Lawrence Livermore National Laboratory
• Smith, M., Hao, Y., Carroll, S (2017) Development and calibration of a reactive transport model for porosity and permeability changes in carbonate reservoirs, International Journal Greenhouse Gas Control http://dx.doi.org/10.1016/j.ijggc.2016.12.004
• Smith, M., Sholokhova, Y., Hao Y., and Carroll, S., 2013, Evaporite caprock integrity: An experimental study of reactive mineralogy and pore – scale heterogeneity during brine – CO2exposure. Environmental Science and Technology, http://dx.doi.org/es3012723.
• Carroll, S. Hao, Y., Smith, M., Sholokhova, Y. (2013), Development of scaling parameters to describe CO2-carbonate-rock interactions for the Marly Dolostone and Vuggy Limestone, I J Greenhouse Gas Control, http://dx.doi.org/10.1016/j.ijggc.2012.12.026
• Hao, Y., Smith, M., Sholokhova, Y., and Carroll, S. (2013) CO2-induced dissolution of low permeability carbonates. Part 1: Numerical modeling of experiments, Advances in Water Resources http://dx.doi.org/10.1016/j.advwatres.2013.09.009
• Smith, M. Sholokhova, Y., Hao, Y., and Carroll, S. (2013) CO2-induced dissolution of low permeability carbonates. Part 2: Characterization and experiments, Advances in Water Resourceshttp://dx.doi.org/10.1016/j.advwatres.2013.09.008
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Lawrence Livermore National Laboratory
Injection Zone
dissolution front pressure difference
solution chemistry (pH) solution chemistry (Ca/Mg)
10 fold permeability increase
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