Progress Check - Volume of Supercritical CO2

What is supercritical CO₂?

Carbon dioxide with properties of a solid, but the viscosity of a liquid.

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Carbon dioxide keeping its gas properties, but also has properties of a solid.

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Carbon dioxide with properties of a liquid, but the viscosity of a gas.

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Why is it important for CO₂ to be in a supercritical phase when storing in the subsurface?

When CO2 is supercritical, it is less dense and can be easily stored.

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When CO2 is supercritical, it is denser, reducing the volume of pore space needed for storage.

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When CO2 is supercritical, it is less dense, increasing the volume of pore space needed for storage.

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What is the volume of a year’s worth of CO₂ in m³?

17.99 x 10^6 m3

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8.45 x 10^6 m3

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3.2 x 10^6 m3

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What is the volume of a year’s worth of CO₂ in ft³?

224 x 10^6 ft3

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635 x 10^6 ft3

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449 x 10^6 ft3

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Progress Check – Volume of Supercritical CO2