Escape of Supercritical-CO2 Fluids Trapped in Calcite Nano-metric Pores

Autor: Zuddas Pierpaolo, Salvi Stefano, Lopez Olivier, De Giudici Giovanni, Censi Paolo
Jazyk: English<br />French
Rok vydání: 2019
Předmět:
Zdroj: E3S Web of Conferences, Vol 98, p 01056 (2019)
Druh dokumentu: article
ISSN: 2267-1242
DOI: 10.1051/e3sconf/20199801056
Popis: Flow of supercritical CO2-bearing fluids through a rock is a fundamental phenomenon which acts upon a great many geological processes ranging from seismic activity to formation of ore deposits. Atomic Force Microscopy scanning experiments allowed us to infer movement of supercritical CO2-bearing fluids through calcite crystals and relate it to natural decrepitation of nanoscale fluid inclusions. Calculated velocities exceed the rate of diffusion predicated via current vacancy models by several orders of magnitude implying that CO2-rich fluid movement through micro and nano-pore space may presently be greatly underestimated.
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