re: Westlake Area: Entergy, Crescent Midstream collaborating on large carbon capture project

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Okay so what happens to the CO2 stored in the cavern.

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CCS, at least in LA from the projects I'm familiar with, do not store CO2 in caverns. It is injected into a specific rock formation that is essentially like a sponge with tiny holes all throughout. It is called pore space.

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Could it leak out or displace other layers in the strata.

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Highly unlikely unless there is a major failure in the injection process. Once in the pore space, not it cannot leak out.

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Could the CO2 compress and form into a solid under pressure?

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Yes, it calcifies into the rock over time

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Could it also escape into the water table turning water wells in the region in to soda water?

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No, the injection space is a 5000+ feet below the water table

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Could one day future earth beings drill for carbon dioxide as a necessary element?

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Who knows