Compositions for fracturing subterranean formations

Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component

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507217, 507922, 435209, E21B 4326

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058694358

ABSTRACT:
A method of fracturing a subterranean formation which surrounds a well bore comprises the steps of providing a fracturing fluid, and injecting the fracturing fluid into the well bore at a pressure sufficient to form fractures in the subterranean formation which surrounds the well bore. The pressure is then released from the fracturing fluid, after which the fluid may be removed from the well and the well placed into production. The fracturing fluid comprises an aqueous liquid, a polysaccharide soluble or dispersible in the aqueous liquid in an amount sufficient to increase the viscosity of the aqueous liquid, an enzyme breaker which degrades said polysaccharide at a temperature above 180.degree. F. Fracturing fluid compositions and enzyme breaker systems useful for carrying out the invention are also disclosed.

REFERENCES:
patent: 3922173 (1975-11-01), Misak
patent: 4250044 (1981-02-01), Hinkel
patent: 4502967 (1985-03-01), Conway
patent: 4996153 (1991-02-01), Cadmus et al.
patent: 5067566 (1991-11-01), Dawson
patent: 5201370 (1993-04-01), Tjon-Joe-Pin
patent: 5226479 (1993-07-01), Gupta et al.
patent: 5247995 (1993-09-01), Tjon-Joe-Pin et al.
patent: 5297625 (1994-03-01), Premuzic et al.
patent: 5476775 (1995-12-01), Fodge et al.
J. Gulbis and D. Schlumberger; Fracturing Fluid Chemistry; Reservoir Stimulation 2d edition; pp. 4-1 thru 4-14 (1989).
E. Luthi, et al; Cloning, Sequence Analysis, and Expression in Escherichia coli of a Gene Coding for a .beta.-Mannanase from the Extremely Thermophilic Bacterium "Caldocellum saccharlyticum", Applied and Environmental Microbiology, 57 No. 3; pp. 694-700 (1991).
M.D. Gibbs, et al; The .beta.-Mannanase from "Caldocellum saccharolyticum" Is Part of a Multidomain Enzyme; Applied and Environment Microbiology, 58 No. 12; pp. 3864-3867 (1992).

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