Oil recovery method using sulfonate surfactants derived from...

Details Oil recovery method using sulfonate surfactants derived from... Oil recovery method using sulfonate surfactants derived from...

E - Fixed Constructions

21

B

31/31

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

Patent

CA 1193427

ABSTRACT An oil recovery method is disclosed which uses a particular class of alkylaryl sulfonate surfactants. The surfactants are derived from an extracted aromatic feedstock consisting essentially of benzene, toluene, xylenes, and lesser amounts of ethylbenzene, trimethylbenzenes, and tetra- methylbenzenes. The aromatic feedstock is then alkylated with linear .alpha.-olefins to favor second-carbon attachment, and sulfonated to result in surfactants having high oil solubilization parameters and whose phase behavior is substantially independent of temperature over 120°-250° Fahrenheit.

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