Dissolving siliceous materials with self-acidifying liquid

Details Dissolving siliceous materials with self-acidifying liquid Dissolving siliceous materials with self-acidifying liquid

1974-05-03

1976-04-27

Guynn, Herbert B.

Compositions

Leather or fur treating

166307, E21B 4327

Patent

active

039533409

ABSTRACT:
Siliceous materials in or around a well are dissolved by contacting them with a self-acidifying aqueous liquid system comprising an aqueous solution of at least one water-soluble fluoride salt mixed with a relatively slowly-reactive acid-yielding material that subsequently converts the salt solution to a hydrofluoric acid solution that has a relatively high pH but is capable of dissolving siliceous material.

REFERENCES:
patent: 1990969 (1935-02-01), Wilson
patent: 2059459 (1936-11-01), Hund et al.
patent: 2094479 (1937-09-01), Vandergrift
patent: 2238671 (1941-04-01), Woodhouse
patent: 2652360 (1953-09-01), Bond et al.
patent: 3122204 (1964-02-01), Oakes
patent: 3215199 (1965-11-01), Dilgren
patent: 3630285 (1971-12-01), Claytor et al.
patent: 3794117 (1974-02-01), Knox et al.
patent: 3826312 (1974-07-01), Richardson et al.

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