Application of a stabilized polymer gel to an alkaline treatment region for improved hydrocarbon recovery

摘要: A process is provided for reducing the permeability of or fluid mobility within a carbonate-containing treatment region in proximate to hydrocarbon-bearing formation below an earthen surface penetrated by well bore. The initiated preparing gelation solution at which includes acrylamide polymer, crosslinking agent, stabilizing agent and aqueous solvent. acid additive, acidic pH buffer system, delayed generator. chromium(III) complex having one more cations carboxylate anions. injected into bore displaced where it gelled situ form gel substantially reduces region. maintains stability resulting diminishing detrimental effect alkaline carbonate minerals on agent.