Patent ID: 6914036

Claim:
A demulsifier composition to prevent or resolve downhole emulsions in aqueous solutions, said demulsifier composition consisting essentially of: a demulsifying amount of one or more salts of alkylaryl sulfonic acid effective to perform a function selected from the group consisting of demulsifying an emulsion in an aqueous solution and preventing formation of an emulsion in an aqueous solution; a first solubilizing quantity of a non-ionic surfactant effective to solubilize said demulsifier in said aqueous solution, said non-ionic surfactant consisting essentially of an alkoxylated compound having the following general formula: R 6 O(CH 2 CHR 7 O) x R 8 wherein R 6 is an alkyl group having from about 8 to about 16 carbon atoms; R 7 independently is selected from the group consisting of hydrogen and alkyl groups having from about 1 to about 6 carbon atoms; R 8 is selected from the group consisting of hydrogen and alkyl groups having from about 1 to about 6 carbon atoms; x is from about 2 to about 20; and a second solubilizing quantity of a mutual organic solvent selected from the group consisting of water soluble glycol ethers, water soluble amides, water soluble ketones, and water soluble alcohols selected from the group consisting of methanol, ethanol, 1-propanol, and 2-propanol, said mutual organic solvent being effective to solubilize said demulsifier and said non-ionic surfactant to produce said demulsifier composition.