Polymerflood process

摘要

A polymerflood oil recovery process comprising the use of low molecular weight polymers of alpha,beta-unsaturated mono- and dicarboxylic acids and alkali metal salts thereof in aqueous polymer slugs to stabilize the solution viscosity of said slugs throughout a polymerflooding process in which adverse subterranean conditions are encountered, such as high temperature, high salinity and/or high concentrations of "hardness" ions.