ELECTROLYTE-CONTAINING AQUEOUS POLYMER SOLUTION AND METHOD FOR TERTIARY RECOVERY OF PETROLEUM

An electrolyte-containing aqueous polymer solution is described with a salt content of 5% to 35% by weight with respect to the total weight of the polymer solution, containing at least one dissolved synthetic copolymer which contains structural units which are derived from (i) at least one amide of...

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Bibliographic Details
Main Authors KRATTENMACHER MANFRED, NEUBER MARITA, USENER CAROLIN, DUGONJIC-BILIC FATIMA
Format Patent
LanguageEnglish
Published 17.03.2016
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Summary:An electrolyte-containing aqueous polymer solution is described with a salt content of 5% to 35% by weight with respect to the total weight of the polymer solution, containing at least one dissolved synthetic copolymer which contains structural units which are derived from (i) at least one amide of an ethylenically unsaturated carbonic acid and from (ii) at least one ethylenically unsaturated sulphonic acid or their alkali metal salts and/or ammonium salts, and containing at least one non-ionic surfactant selected from the group formed by alkoxylated fatty alcohols, alkoxylated alkylphenols and/or alkoxylated fatty acids, with the proviso that the mean degree of alkoxylation of said surfactants is 8-10. The aqueous polymer solution is used for the tertiary recovery of crude petroleum and is characterized by very good filtration behaviour, in particular in the presence of saline water.
Bibliography:Application Number: US201414784732