Aqueous surfactant systems for in situ multiphase...

Details Aqueous surfactant systems for in situ multiphase... Aqueous surfactant systems for in situ multiphase...

E - Fixed Constructions

21

B

31/13

E21B 43/00 (2006.01) C09K 8/584 (2006.01)

Patent

CA 1097052

MAR 10 1981 Abstract of the Disclosure The optimum aqueous surfactant system for forming an efficient multiphase microemulsion system In situ is determined by comparing the be- havior of oil from the formation to be flooded with the behavior of simple hydrocarbons in an equilibration test with a standard surfactant system. Thereafter, salt concentration, equivalent weight of the sulfonate and/or alcohol solubility is varied based on criterion disclosed herein to arrive at the optimum system for recovery of the specific oil in question.

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