METHOD FOR INHIBITING WATER PERMEATION IN AN EXTRACTION WELL OF A HYDROCARBON FLUID FROM AN UNDERGROUND RESERVOIR

摘要

The present invention relates to a method for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir comprising: - supplying a water-in-oil emulsion comprising: - an oily continuous phase, - an aqueous discontinuous phase comprising a plurality of particles of at least one hydrogel comprising at least one cationic polymer; - positioning said water-in-oil emulsion in contact with said underground reservoir. The present invention also concerns a treatment fluid for hydrocarbon fluid extraction wells comprising the aforementioned water-in- oil emulsion and the related preparation process.