| 简介 |
A method of treating a hydrocarbon containing formation, comprising (a) providing a hydrocarbon recovery composition to at least a portion of the hydrocarbon containing formation, wherein the hydrocarbon recovery composition comprises a propoxylated composition which comprises (1) a glycerol sulfonate of a propoxylated primary alcohol having a branched aliphatic group with an average carbon number from 10 to 24 and having an average number of branches per aliphatic group of from 0.7 to 2.5 and having at least 0.5, preferably from 3 to 12, moles of propylene oxide per mole of primary alcohol and (2) polypropylene glycol; provided that the primary alcohol is propoxylated by contacting the alcohol with propylene oxide in the presence of a catalytically effective amount of one or more of the phosphate salts of lanthanum series elements or the rare earth elements, preferably a carbonate salt thereof, wherein the propoxylated composition comprising the propoxylated alcohol and from 1 to 30 wt% of polypropylene glycol is produced; and (b) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation. |
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