USE OF ALKOXYLATED ALCOHOL ANIONIC SURFACTANT IN ENHANCED OIL RECOVERY

The invention relates to a method of treating a hydrocarbon containing formation, comprising the following steps: a) providing a composition, which comprises a surfactant which is a compound of the formula (I) R-O-[R′-O]x-X, wherein R is a hydrocarbyl group having a weight average carbon number of f...

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Bibliographische Detailangaben
Hauptverfasser:	DUBEY SHEILA TERESA, GROEN KHRYSTYNA, KROM CORNELIA ALIDA, BARNES JULIAN RICHARD, ON QUOC AN
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	The invention relates to a method of treating a hydrocarbon containing formation, comprising the following steps: a) providing a composition, which comprises a surfactant which is a compound of the formula (I) R-O-[R′-O]x-X, wherein R is a hydrocarbyl group having a weight average carbon number of from 13 to 30, R′-O is an alkylene oxide group, x is the number of alkylene oxide groups R′-O, and X is selected from the group consisting of: (i) a group comprising a sulfate moiety; (ii) a group comprising a carboxylate moiety; and (iii) a group comprising a sulfonate moiety, to at least a portion of the hydrocarbon containing formation, wherein the hydrocarbon containing formation comprises a crude oil which has a weight ratio of saturates to aromatics of from 0.6 to 5.0; and b) allowing the surfactant from the composition to interact with the hydrocarbons in the hydrocarbon containing formation.