Oil recovery with dilute surfactant systems

Details Oil recovery with dilute surfactant systems Oil recovery with dilute surfactant systems

E - Fixed Constructions

21

B

166/31

E21B 43/22 (2006.01)

Patent

CA 1169759

Abstract of the Disclosure The combination of a dilute surfactant solution with an alkaline compound is effective in recovering oil from petroleum deposits after primary and secondary recovery operations have been completed. The combination is injected into the petroleum bearing formation and as it travels through the structure oil is washed free of the rock and is recovered from a production well. A preferred alkaline compound is sodium silicate. The use of sodium silicate appears to maxi- mize and concentrate the recovery of the surfactant so that it can be recycled. 14

384901

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