METHOD FOR REDUCING THE PERMEABILITY DISPARITY BETWEEN TWO ZONES OF A GEOLOGICAL FORMATION AND USE THEREOF FOR RECOVERING HYDROCARBONS

摘要

A fluid is provided for reducing differences in the permeability of a heterogeneous or fissured geological formation through which runs a well linked to the surface. The fluid consists of a stable suspension of solid particles and is selectively injected into areas of high permeability or into fissures rather than into areas of low permeability. Said suspension can be used to treat water inflows in production wells and to improve injection recovery in a productive formation. A method for reducing differences in the permeability of a geological formation is also provided.