Thermally Stable Acrylic Polymer for Profile Modification Applications
Profile modification is a process in which flooding water is diverted from highly permeable zones into less permeable oil-bearing layers within a subterranean reservoir. In recent years this has been achieved by the use of polymeric hydrogels in yhich the water-soluble polymer is cross-linked by a multivalent metal ion1. The latter may be generated in situ from a redox couple, e.g., sodium dichromate/sodium metabisulfite or as a complexed reagent, e.g., aluminum citrate. This enables the gelation process to be retarded until the aqueous polymer solution has been placed deep into the thief zone.
KeywordsAcrylic Acid Storage Modulus Reactivity Ratio Sodium Acrylate Aqueous Polymer Solution
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