Method for preparing microgels of controlled size

摘要

The present invention relates to a method for preparing microgels of controlled size. According to the method, a gelling composition comprising a polymer and a crosslinking additive intended for the polymer is injected into a porous and permeable medium, and a monodisperse solution of microgels of substantially constant size is recovered at the outlet.The invention also relates to an application of the method for reducing the permeability of porous and permeable formations of reservoir rock type.