A large scale dual-porosity approach for the modeling of the wormholing phenomenon

Michel QUINTARD, Brigitte BAZIN, Charles Edouard COHEN, Didier DING & Charles Edouard COHEN
Acid treatment is frequently used in the oil industry to improve well productivity. It is achieved in carbonate reservoir by taking advantage of a macroscopic instability which creates empty channels (wormholes) bypassing the damaged areas and improving near wellbore permeability. Length, size and density of these channels depend on numerous parameters from injection rate to rock properties. Resulting dissolution patterns have been extensively studied and several models proposed. Today, core-scale numerical models can successfully reproduce...
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