Method for consolidating sand or water control in subterranean f

Details Method for consolidating sand or water control in subterranean f Method for consolidating sand or water control in subterranean f

1978-07-26

1980-03-18

Guynn, Herbert B.

Wells

Processes

Cementing, plugging or consolidating

252316, E21B 3313

Patent

active

041934539

ABSTRACT:
A method and composition for fracturing a subterranean formation which comprises (1) contacting a subterranean formation with an aqueous liquid comprising a propping agent and a composition containing water, acrylamide:methacrylate copolymer cross-linked with chromium (III) ion, in presence of carbonate ion, oxalate ion, and, optionally, persulfate ion, (2) applying pressure to said liquid, (3) maintaining said pressure to fracture said formation, (4) and said gel breaking within 24 hours of gel formation. The composition without the persulfate gel breaking is also useful for sand consolidation and fluid control.

REFERENCES:
patent: 3502149 (1970-03-01), Pence
patent: 3687200 (1972-04-01), Routson
patent: 3727689 (1973-04-01), Clampitt
patent: 3816151 (1974-06-01), Podlas
patent: 3926258 (1975-12-01), Hessert et al.
patent: 4021355 (1977-05-01), Holtmyer et al.

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