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U.S. Department of Energy
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Micellar flooding process

Patent ·
OSTI ID:7219298
A process is given for the recovery of petroleum from a subterranean formation by the injection of a micellar displacement system consisting of a micellar solution and aqueous phase including the ammonium or alkali metal salt of an aminopolycarboxylic acid as a chelating agent. The chelating agent is present in concentrations in excess of the stoichiometric amount required to chelate the multivalent ion of the aqueous phase. 30 claims.
Assignee:
Union Oil Co. of California
Patent Number(s):
US 4036300
OSTI ID:
7219298
Country of Publication:
United States
Language:
English