Abstract
We measured the change in permeability of two selected sandstones (Berea, Fonteinebleau) due to injection of CO2- saturated ("live") brine, unsaturated ("dead") brine or supercritical (sc) CO2 at reservoir conditions. We found that the permeability did not significantly change in a clean sandstone consisting of pure quartz (Fonteinemebleau) due to live or dead brine injection, although permeability changed due to scCO2 injection by 23%. The permeability in the Berea sandstone, however, changed due to live or dead brine injection, by up to 35%; this permeability reduction in Berea sandstone was likely caused by fines release and subsequent pore throat plugging as the damage was more significant at higher injection rates. We expect that this phenomenon - i.e. rock permeability reduction due to CO2 injection into the formation - can have a significant and detrimental influence on CO2 injectivity, which would be reduced accordingly.
| Original language | English |
|---|---|
| Pages (from-to) | 3051-3059 |
| Number of pages | 9 |
| Journal | Energy Procedia |
| Volume | 63 |
| DOIs | |
| State | Published - 2014 |
| Externally published | Yes |
| Event | 12th International Conference on Greenhouse Gas Control Technologies, GHGT 2014 - Austin, United States Duration: 5 Oct 2014 → 9 Oct 2014 |
Bibliographical note
Publisher Copyright:© 2014 The Authors Published by Elsevier Ltd.
Keywords
- CO-saturated brine
- Injectivity decrease
- Live brine
- Permeability reduction
- Sandstone
- Supercritical CO
ASJC Scopus subject areas
- General Energy