Process for displacing oil with aqueous sulphonate and...

Details Process for displacing oil with aqueous sulphonate and... Process for displacing oil with aqueous sulphonate and...

E - Fixed Constructions

21

B

166/31

E21B 43/22 (2006.01) C09K 8/584 (2006.01)

Patent

CA 1082101

A B S T R A C T In displacing oil within a subterranean reservoir with an aqueous surfactant system containing a mixture of petroleum sulphonate and alcohol, an improvement is provided by using particular kinds and amounts of those components. The selected surfactant is one that forms an active aqueous surfactant system in the presence of an effective kind and amount of dis- solved electrolyte. The selected alcohol is a preferentially oil-soluble alkanol that provides at least substantially equal activity when mixed with the selected surfactant in an aqueous system containing little or no dis- solved electrolyte.

286879

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