A method of treating an underground formation is provided, the method including sequential steps of: (a) contacting the formation with an aqueous medium; (b) contacting the formation with a hydrocarbon fluid; (c) contacting the formation with a solvent in the form of a glycol ether; (d) contacting the formation with a consolidation solution of between 30 and 60 % m of monomeric and/or polymeric organic polyepoxides having more than one epoxy group per molecule and between 5 and 20% m of a curing agent in the solvent; and (e) contacting the formation with a viscosified fluid containing aliphatic hydrocarbons.
RELATED PATENT APPLICATION
This patent application is a continuation application to U.S. patent application Ser. No. 08/757,198, filed on Nov. 27, 1996.
A method of treating an underground formation of an oil reservoir, comprising the sequential steps of (a) contacting the formation with an aqueous medium, (b) contacting the underground formation with a hydrocarbon fluid, (c) contacting the underground formation with a solvent in the form of a glycol ether, (d) contacting the underground formation with a first consolidation constituent solution, mainly comprising a poly epoxy resin, (e) contacting the underground formation with second consolidation constituent substantially homogenous solution mainly comprising a curing agent in a solvent.
