N-vinyl lactam/unsaturated amide copolymers in thickened acid co

Details N-vinyl lactam/unsaturated amide copolymers in thickened acid co N-vinyl lactam/unsaturated amide copolymers in thickened acid co

1984-03-05

1986-03-25

Morris, Theodore

Compositions

Leather or fur treating

166307, E21B 4327

Patent

active

045782016

ABSTRACT:
Water soluble thickened acid compositions suitable for matrix or fracture acidizing are provided comprising water, an acid, and a water thickening amount of a copolymer of a N-vinyl lactam and an unsaturated amide. This composition can contain in addition a crosslinking agent to give a gelled acid composition. In a preferred embodiment, a lactam-containing copolymer is made in a diluent containing dissolved electrolytes. These compositions are particularly useful in acid or matrix fracturing in subterranean formations exhibiting a hostile environment, as exemplified by high temperatures and/or high concentration of multivalent metal cations.

REFERENCES:
patent: 3252904 (1966-05-01), Carpenter
patent: 3421584 (1969-01-01), Eilers et al.
patent: 3434971 (1969-03-01), Atkins et al.
patent: 3482636 (1969-12-01), Crowe
patent: 3768565 (1973-10-01), Persinski et al.
patent: 3791446 (1974-02-01), Tate
patent: 3923666 (1975-12-01), Dill
patent: 3924684 (1975-12-01), Tate
patent: 4002589 (1977-01-01), Farley
patent: 4044833 (1977-08-01), Volz
patent: 4079011 (1978-03-01), Tate
patent: 4107057 (1978-08-01), Dill
patent: 4191657 (1980-03-01), Swanson
patent: 4210205 (1980-07-01), Allen et al.
patent: 4219429 (1980-08-01), Allen et al.
patent: 4244826 (1981-01-01), Swanson
patent: 4277580 (1981-07-01), Allen et al.
patent: 4309523 (1982-01-01), Engelhardt
patent: 4323123 (1982-04-01), Swanson
patent: 4404111 (1983-09-01), Bi et al.

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