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| Titel |
Changes of petrophysical properties of long sandstone core samples during CO2-injection |
| VerfasserIn |
Georg Nover, Davood M. Yosef Nejad, Arne Mansfeld |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250153634
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| Publikation (Nr.) |
 EGU/EGU2017-18635.pdf |
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| Zusammenfassung |
| Changes of petrophysical parameters were studied on four
different quartz rich sandstones (from northern and western
Germany) during CO2-injection. The injection experiments
were carried out in 24 long samples (9 cm) to see the effect
of lenght and different salinity (0.1M to 1M NaCl-solution) on porosity, permeability and electrical conductivity changes.
The samples were fully saturated before the injection process
using a vacuum desiccator. Constant pressure method was
used for all sets of experiments. After the experiments the
samples were cut into 3 cm long pieces to investigate the
changes of the porosity and permeability individually.
X-ray powder diffraction (XRD) analysis was also done to
investigate the mineralogical composition changes before
and after the CO2 injection. The first results show a
relationship between the salinity of the brine and changes
in petrophysical properties. XRD results show the relation
between the salinity of the brine and the mineralogical
dissolution/enrichment in the samples. Details will be
presented on the poster. |
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