Water-soluble copolymers useful for enhanced oil recovery

Details Water-soluble copolymers useful for enhanced oil recovery Water-soluble copolymers useful for enhanced oil recovery

1984-05-08

1986-01-07

Morris, Theodore

Compositions

Leather or fur treating

526287, C09K 300

Patent

active

045632901

ABSTRACT:
Water-soluble copolymers of 10-30 mole % of (meth)acrylic acids, 1-10 mole % of sulfo group-containing (meth)acrylic monomers and 60-89 mole % of (meth)acrylamides, which copolymers have inherent viscosity of 10-25 dl/g, have improved mechanical shear stability and improved viscosity-increasing property even under contact with water containing impurities and are used for enhanced oil recovery.

REFERENCES:
patent: 3804173 (1974-04-01), Jennings
patent: 3858652 (1975-01-01), Rhudy et al.
patent: 4163476 (1979-08-01), Tate
patent: 4309523 (1982-01-01), Engeihardt
patent: 4404111 (1983-08-01), Bi et al.
patent: 4471097 (1984-08-01), Uhl et al.

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