Compositions – Leather or fur treating
Patent
1978-05-22
1980-08-26
Guynn, Herbert B.
Compositions
Leather or fur treating
166307, 525329, 526264, E21B 4327
Patent
active
042194296
ABSTRACT:
The production of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acid-soluble components, such as one composed at least in part of dolomite or limestone, is stimulated by injecting into the formation usually via casing and cement pack perforations a composition comprising an aqueous solution of a mineral acid having dissolved therein a small amount of a vinylpyrrolidone terpolymer. The increase in the permeability and porosity of the formation achieved utilizing the method of invention results in a substantial improvement in hydrocarbon recovery. Optionally, the injected composition may be saturated with natural gas at the injection pressure.
REFERENCES:
patent: 2596137 (1952-05-01), Fast
patent: 2763326 (1956-09-01), Cardwell
patent: 3679000 (1972-07-01), Kaufman
patent: 3791446 (1974-02-01), Tate
patent: 3923666 (1975-12-01), Dill
Allen Joseph C.
Tate Jack F.
Guynn Herbert B.
Hunter Walter D.
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
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