Preformed surfactant-optimized aqueous alkaline flood

Details Preformed surfactant-optimized aqueous alkaline flood Preformed surfactant-optimized aqueous alkaline flood

1989-08-09

1991-11-26

Stoll, Robert L.

Compositions

Radioactive compositions

Nuclear reactor fuel

252 8551, 166270, 166271, 166272, 166273, 166274, 166275, E21B 4322

Patent

active

050680439

ABSTRACT:
An aqueous alkaline flood for recovering oil from a reservoir containing acidic oil is improved by adding to the injected aqueous alkaline solution both a stoichiometric excess of the alkaline material and a kind and amount of preformed cosurfactant material that increases the salinity of that solution so that, in contact with the oil in the reservoir, it will form a surfactant system having a salinity requirement which minimizes the interfacial tension between it and the oil.

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"Enhanced Recovery Pilot Begins in Louisiana", QUEST, May-June, 1986.

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