Oil recovery method utilizing highly oxyalklated phenolic resins

Details Oil recovery method utilizing highly oxyalklated phenolic resins Oil recovery method utilizing highly oxyalklated phenolic resins

1987-09-18

1989-03-21

Guynn, Herbert B.

Compositions

Leather or fur treating

166274, 166275, 525507, 525528, 525129, E21B 4322

Patent

active

048140945

ABSTRACT:
The method of recovering petroleum from a subterranean reservoir preferably comprising the steps of: (1) introducing through an injection well a predetermined amount of a polyalkylene oxide adduct of a fusible, aromatic hydrocarbon soluble synthetic resin which contains between about 4 to about 16 phenolic groups and is a condensate of a substituted phenol and an aldehyde, said condensate resin being further condensed with ethylene oxide and at least one other alkylene oxide containing 3 or 4 carbon atoms and in such amounts that the weight ratio of condensed alkylene oxide moiety to phenolic resin moiety ranges from about 1-to-1 to about 100-to-1 and the weight percentage of ethylene oxide residues to the total of all alkylene oxide residues ranges from about 20% to about 75%; said adduct (a) being soluble in water to the extent of about 1% or more at 25.degree. C. and (b) said 1% solution having a cloud point of less than about 70.degree. C.; (2) contacting said petroleum in said reservoir with an effective thin film forming amount of said polyalkylene oxide adduct; and (3) introducing into the formation an aqueous medium to urge said petroleum toward and through a producing well.

REFERENCES:
patent: 2356205 (1944-08-01), Blair et al.
patent: 2454541 (1946-11-01), Bock et al.
patent: 2557081 (1951-06-01), De Groote et al.
patent: 3583486 (1971-06-01), Stratton
patent: 4260019 (1981-04-01), Blair

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