Thermotropic Composition with Two Gelation Agent for Water Shut-off and Enhance of Oil Recovery

This work presents results of laboratory studies and field tests of thermotropic composition for EOR and water shut-off, with two simultaneously acting gelation agents, polymer and inorganic, developed at Institute of Petroleum Chemistry SB RAS. The application area of this composition is oilfields developed by thermal flooding and cyclic-steam stimulated oil production wells. The composition forms in-situ “gel-in-gel” system with improved structural-mechanical properties, using reservoir or carrier fluid (steam) heat for gelation. The gel blocks water and steam breakthrough into producing wells and redistribute fluid flows, thus increases oil recovery factor. The results of laboratory studies and pilot tests proving technology effectiveness are presented.