Pore-scale imaging of trapped supercritical carbon dioxide in sandstones and carbonates
نویسندگان
چکیده
Geological carbon dioxide storage must be designed such that the CO2 cannot escape from the rock formation into which it is injected, and often simple stratigraphic trapping is insufficient. CO2 can be trapped in the pore space as droplets surrounded by water through capillary trapping. X-ray microtomography was used to image, at a resolution of 6.6 m, the pore-scale arrangement of these droplets in three carbonates and two sandstones. The pressures and temperatures in the pore space were representative of typical storage formations, while chemical equilibrium was maintained between the CO2, brine and rock arbon capture and storage
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SPE 166498 Reservoir-Condition Pore-Scale Imaging Of Supercritical Carbon Dioxide
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