WP3 Sealing properties
The WP3 Seal activity is focused on two levels:
On the large scale focus has been on the “Seal Sequence Concept”, which has involved identification of all important seal objects, their position in the sedimentary basin, their interdependence on each other, and their function with respect to CO2 retention capacity together with evaluation of the cementation of fractures by carbonates.
On the small scale of individual objects, the focus is on material properties, and specifically on their predicted dynamic behaviour as a response to the stress introduced by CO2 injection. Two particular objects/materials are in focus : microfractures and clay minerals, that represent an important component of caprocks and overburden sediments. A theoretical concept for porosity waves (e.g. dynamic changes in porosity and permeability due to stress variation) has also been initiated.
The activities in Work Package 3 are:
3.1 Seal sequence concept / basis for experimental work
3.2 Review of geochemical reactions in faults and fractures
3.3 Experimental data on individual seal elements (caprock, well materials)
3.4 Modeling of seal elements (caprock, well materials)
3.5 Coupled flow model
3.6 Quantification of leakage
3.7. Integrated concepts for seal sequence
Photo: The BCB sediments evidence that even during very intense earth movements the seal systems have been able to hold back and immobilize enormous amounts of oil over time intervals as long as 50-100 millions of years.Courtesy of Harald Johansen, Institute of Energy Technology.
06. 05. 2013
Kritisk CO2-nivå i havet er passert, forsuringsnivået i havet vil vare...
22. 02. 2013
Interessante signaler fra Europakommisjonen gir grunn til en viss opti...
4. juni 2013
The 7th Trondheim CCS Conference (TCCS-7), June 4–6...
10. juni 2013
75th EAGE Conference & Exhibition, London 10–13 June...
17. juni 2013
SIAM Conference on Mathematical and Computational Issues in the Geosci...
8. juli 2013