ELEKTROLYTHOLDIG VANDIG POLYMEROPLØSNING OG FREMGANGSMÅDE TIL TERTIÆR BEDRING AF RÅOLIE

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 NEUBER, Marita, KRATTENMACHER, Manfred, DUGONJIC-BILIC, Fatima, USENER, Carolin
Format Patent
LanguageDanish
Published 18.07.2022
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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: DK20140724636T