Pore-scale experimental simulation of water flow in acidified carbonate rock based on tomographic imaging

Resumo

It presents a pore-scale experimental simulation of water flow in acidified carbonate rock based on
tomographic images with the aim of investigating the variations in the rock petrophysical properties because of
the acidizing as well as the efficiency of the wormhole pattern. The experimental configuration allows an
understanding of the behavior of the acidified reservoir by means of comparisons between the experimental
petrophysical analysis and the digital analysis of an acidified sample. Digital analysis accounts for mathematical
models of reconstructing images by using computerized X-rays. The validation of the simulation is done by
comparing the experimental petrophysical results with the digital petrophysical analysis before and after the
acidizing. This research is motivated by the need to evaluate the permeability and porosity characteristics of the
rock and the digital rock derived from the simulation. Moreover, the simulation is used to evaluate the efficiency
of the wormhole pattern (dissolution channels structure) and, consequently, validate the acidification process.