Copolymers useful for gelling acids

Details Copolymers useful for gelling acids Copolymers useful for gelling acids

2005-02-15

2005-02-15

Tucker, Philip C. (Department: 1712)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S222000, C507S224000, C507S903000, C507S923000, C507S933000, C166S308200, C166S308500, C166S307000

Reexamination Certificate

active

06855672

ABSTRACT:
Disclosed is a copolymer useful for preparing acid gels comprising a copolymer having a copolymer backbone, the copolymer having a general formula:wherein: (a) A is an H or other terminating group; (b) R1is an OH or NH2; (c) R2is an O or NH; (d) Z is an integer having a value of from 1 to 4; (e) X and Y are present in a ratio (X:Y) of from 3:2 to 4:1; (f) structures I and II are present as blocks or randomly distributed along the copolymer backbone; and wherein the copolymer has a molecular weight of from about 1,000,000 to about 10,000,000.

REFERENCES:
patent: 3839500 (1974-10-01), Dexter
patent: 4024040 (1977-05-01), Phalangas et al.
patent: 4152274 (1979-05-01), Phillips et al.
patent: 4507440 (1985-03-01), Engelhardt et al.
patent: 4514551 (1985-04-01), Furuno et al.
patent: 4515635 (1985-05-01), Rao et al.
patent: 4536303 (1985-08-01), Borchardt
patent: 4554081 (1985-11-01), Borchardt et al.
patent: 4555269 (1985-11-01), Rao et al.
patent: 4558741 (1985-12-01), Borchardt et al.
patent: 4563292 (1986-01-01), Borchardt
patent: 4588508 (1986-05-01), Allenson et al.
patent: 4626363 (1986-12-01), Gleason et al.
patent: 4669722 (1987-06-01), Rangaswamy
patent: 4730081 (1988-03-01), Holtmyer et al.
patent: 4767550 (1988-08-01), Hanlon et al.
patent: 4780221 (1988-10-01), Holtmyer et al.
patent: 4783513 (1988-11-01), Cadel et al.
patent: 4980437 (1990-12-01), Kaussen et al.
patent: 5652296 (1997-07-01), Randen
patent: 5698627 (1997-12-01), Oguni et al.
patent: 5701955 (1997-12-01), Frampton
patent: 5717045 (1998-02-01), Tseng
patent: 5795926 (1998-08-01), Niessner et al.
patent: 5975206 (1999-11-01), Woo et al.
patent: 6046140 (2000-04-01), Woo et al.
patent: 6053246 (2000-04-01), Echols et al.
patent: 6189615 (2001-02-01), Sydansk
patent: 6207620 (2001-03-01), Gonzalez et al.
patent: 2912326 (1980-10-01), None
patent: 311904 (1988-10-01), None
patent: 04-11095 (1992-01-01), None
patent: 06-80737 (1994-03-01), None
Lewis R. Norman et al.;Temperature Stable Acid Gelling Polymers. Laboratories Evaluation and Field Results,SPE 10260, 56th Annual Fall Technical Conference and Exhibition of the Society of Petroleum Engineers of AIME, Oct. 5-7, 1981, pp. 1-4, 3 Tables, 8 Figures.

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