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How much Carbon Dioxide can be stored in the ground by sequestration?

In a recent report, the following statement has been made:
"Published reports on the potential for sequestration fail to address the necessity of storing CO2 in a closed system. Our calculations suggest that the volume of liquid or supercritical CO2 to be disposed cannot exceed more than about 1% of pore space. This will require from 50 to 200 times more underground reservoir volume than has been envisioned by many, and it renders geologic sequestration of CO2 a profoundly non-feasible option for the management of CO2 emissions."

Other scientists find the statement controversial and misleading due to analysis based on assumptions, which, perhaps, do not occur in reality.

The project consists of the following tasks:

1. Read the report, and filter out what assumptions are made. Compare these with other assumptions in the literature. An important assumption is the one of closed boundaries, but there may be other important issues as well?

2. Formulate a model problem, where at least the boundary conditions can be varied in accordance with what is commonly used.

3. Perform numerical simulations using a suitable software to investigate the impact of the boundary assumptions, and possibly ther assumptions.

There are two options regarding the choice of the software. One possibility is to use Comsol Multiphysics.
The other option is to use a specialized software product, available at the Department of Earth Sciences, Uppsala University.
The choice is to be discussed.

The report in question is here.

Gunilla Kreiss, TDB, main supervisor

Margot Gerritsen (Stanford) will help with formulating the model problem, and which tests to perform.

Auli Niemi will be the contact person from the Department of Earth Sciences.

Uppdaterad  2010-03-10 13:37:01 av Maya Neytcheva.