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Imaging Techniques f or R ock Characterization and EOR Processes . 16. October 2012 Jarand Gauteplass Department of Physics and Technology University of Bergen. Experimental setup. MRI-experiment CT-experiment. Experimental procedure: MRI-experiment . - PowerPoint PPT Presentation
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Imaging Techniques for Rock Characterization and EOR Processes 16. October 2012
Jarand Gauteplass
Department of Physics and TechnologyUniversity of Bergen
Experimental setupMRI-experimentCT-experiment
Experimental procedure:MRI-experiment
Experimental procedure:CT-experiment
Liquid CO2 injectionAmbient temperature, 1200 psiCHP_CO2_2
SCA2008-41SCA2008-41 SCA2008-41
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Rock CharacterizationAmbient temperature and pressure
•Outcrop from Portland quarry in Ålborg, DK
•Similar to chalk reservoir rock in the North sea
•Effective porosity: 42 – 48%•Abs permeability: 2 – 6 mD•99% calcite, 1% quartz
Rørdal chalk
Results:Rock characterization using CT
•40 x 40 x 42 microns resolution
•1.5“ Rørdal chalk
Results:Rock characterization using CT
•40 x 40 x 42 microns resolution
•1.5“ Rørdal chalk
Results:Rock characterization using CT
•40 x 40 x 42 microns resolution
•1.5“ Rørdal chalk
Results:Rock characterization using CT
•40 x 40 x 42 microns resolution
•1.5“ Rørdal chalk
Liquid CO2 injectionAmbient temperature, 1200 psiCHP_CO2_8
Results:CO2 injection
•One SWW Rørdal chalk core (IAH=1.0)•Liquid CO2 conditions
•First contact miscible displacement•Imaged using industrial CT
0 PVCO2
0.01 PV
0.04 PV
0.07 PV
0.10 PV
0.12 PV
0.15 PV
0.18 PV
0.21 PV
0.24 PV
0.27 PV
0.30 PV
0.33 PV
0.36 PV
0.38 PV
0.41 PV
0.44 PV
0.48 PV
0.53 PV
0.59 PV
0.65 PV
0.88 PV
1.06 PV
Conclusions•Shear bands identified•Small heterogeneties have a large impact
on core floods
