Method of controlling fluid loss in acidizing treatment of a sub

Details Method of controlling fluid loss in acidizing treatment of a sub Method of controlling fluid loss in acidizing treatment of a sub

1978-05-09

1980-12-09

Padgett, Benjamin R.

Wells

Processes

Separate steps of fracturing or attacking formation

252 855C, 166307, 166308, E21B 3313

Patent

active

042379741

ABSTRACT:
Improved fluid loss control is realized in an acidizing treatment of a subterranean formation, of the type wherein a gelled pad fluid is injected ahead of an acidizing fluid, by dissolving an effective amount of an inorganic water soluble metal halide or sulfate salt in the pad fluid and injecting said salt containing pad fluid ahead of the acid.

REFERENCES:
patent: 1916122 (1933-06-01), Grebe
patent: 2122483 (1938-07-01), Menual
patent: 2127662 (1938-08-01), Grebe
patent: 3974077 (1976-08-01), Free
patent: 4113631 (1978-09-01), Thompson

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