Abstract
The displacement of oil by an aqueous acid solution in the neighborhood of a well and a hydraulic fracture is considered with allowance for the kinetics of acid dissolution of a carbonate rock. The penetration of the active admixture and the variation of the seepage characteristics of the reservoir in the course of the reactant injection and after stoppage for reaction are investigated on the basis of the model proposed. The effect of the acid treatment, the reaction time, and the depth of penetration of the solution into the formation are estimated. Analytic estimates and numerical calculations are carried out for real examples.
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