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| Titel |
The influence of CO2-SO2 - brine mixtures on petrophysical parameters of potential reservoir sandstones |
| VerfasserIn |
Juliane Kummerow, Erik Spangenberg, Ronny Giese |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250039628
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| Zusammenfassung |
| The main objective of this study is to investigate the interaction between CO2-CO2-SO2 –
brine mixtures and sandstone samples from potential CO2 reservoir formations
(Buntsandstein, Stuttgart Formation) on petrophysical parameters under realistic pressure and
temperature conditions. This is essential to assess the required purity of the CO2
from the capture process in order to avoid reservoir damage. We built a long-term
experimental flow assembly designed for a maximum pressure of 600 bar at a maximum
working temperature of 150°C. The internal set-ups allow for the determination of
P and S wave velocities, electrical conductivity and permeability at samples of
30mm in diameter and 60mm in length. Additionally, the experimental equipment is
capable for capillary pressure experiments. In this case, elastic wave velocities and
electrical resistivity are determined as functions of the water saturation of the rock
samples.
To date, we have performed long-term (several weeks) two-phase flow experiments using
CO2 and brine at different ratios. The flow experiments showed not the expected changes of
the measured physical rock properties. This can be explained by the high residual water
saturation of most samples, which vary between 40 and 70%.
We also present first results from experiments with CO2-SO2- mixtures. |
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