CO2 water-rock reaction does not converge.
Hi everyone：
I recently used toughreactV1.2 to simulate CO2 sequestration. The total simulation time was 1 year, but unfortunately the model did not converge.
In Petrasim, when the simulation time reached about 100 days, the model suddenly did not converge. When I turned off the chemistry and just thought about the flow, there was nothing wrong with the model.
I would be grateful if you could provide me with any help or advice. Thank you very much for your help.
1 reply
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I think you probably need to take a closer look at your initial chemical conditions. I turned off the injection in your model and ran it for 1 year. The ph in the model starts at around 1 and ends around 10. I think that this indicates that the water is not in equilibrium with the minerals, which is typically a requirement for this type of simulation.