Abstract: The invention relates to a method for treating a reservoir rock, wherein the following stages are carried out: making a concentrated water-in-oil emulsion comprising: between 50% and 80% aqueous phase in which at least one treatment additive is dissolved and between 20% and 50% oil phase containing at least one polymeric surfactant, shearing the concentrated emulsion so as to obtain an emulsion having drops of substantially monodispersed size and essentially below 1 ?m, diluting the monodispersed emulsion with an oil phase so as to obtain an aqueous phase dispersed at a rate below 50%, and injecting the diluted emulsion into the reservoir rock.