Oil recovery by waterflooding employing a...

Details Oil recovery by waterflooding employing a... Oil recovery by waterflooding employing a...

E - Fixed Constructions

21

B

31/16, 166/33

E21B 43/22 (2006.01) C09K 8/584 (2006.01) C09K 8/90 (2006.01)

Patent

CA 1047395

Abstract of the Disclosure A process for the recovery of oil from subterranean oil reservoirs by waterflooding employing a multicomponent anionic-nonionic surfactant system in combination with a Xanthomonas polysaccharide thickening agent. The surfactant system and polysaccharide provide for enhancing thickening action in the injected aqueous liquid at relatively low shear rates. The anionic surfactant employed is an amide-linked sulfonate and the nonionic component is a polyethylene oxide type surfactant. -1-

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