Composition containing a polyvinylpyrrolidone and method for sti

Details Composition containing a polyvinylpyrrolidone and method for sti Composition containing a polyvinylpyrrolidone and method for sti

1976-04-26

1978-03-14

Guynn, Herbert B.

Compositions

Leather or fur treating

166307, 252 855R, E21B 4327, E21B 4326

Patent

active

040790118

ABSTRACT:
The production of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acid-soluble components, such as one containing clays or siliceous minerals as exemplified by sandstone, shale, etc. is stimulated by injecting into the formation a composition comprising an aqueous solution of a mineral acid and a fluorine-containing acid or salt and having dissolved therein a vinylpyrrolidone polymer and, if desired, a small amount of a water-soluble acrylic acid-type polymer. The in-depth increase in the permeability and porosity of the formation achieved utilizing the method of invention results in a substantial improvement in hydrocarbon recovery.

REFERENCES:
patent: 1990969 (1935-02-01), Wilson
patent: 2011579 (1935-08-01), Heath et al.
patent: 2763326 (1956-09-01), Cardwell et al.
patent: 3179171 (1965-04-01), Beale
patent: 3481404 (1969-12-01), Gidley
patent: 3549538 (1970-12-01), Jacklin
patent: 3794117 (1974-02-01), Knox et al.
patent: 3827977 (1974-08-01), Miles et al.
patent: 3924684 (1975-12-01), Tate

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