Process for chemically and mechanically limited reservoir acidiz

Details Process for chemically and mechanically limited reservoir acidiz Process for chemically and mechanically limited reservoir acidiz

1975-02-18

1976-04-06

Novosad, Stephen J.

Wells

Processes

Placing fluid into the formation

E21B 4325, E21B 4327

Patent

active

039483240

ABSTRACT:
The fluid productivity of a relatively unconsolidated oil producing subterranean siliceous reservoir is improved by a limited flow rate sequential injection of oil solvent, relatively dilute hydrogen fluoride-free acid, and relatively dilute hydrogen fluoride containing-acid, and a gradual returning of the well to production.

REFERENCES:
patent: 2215487 (1940-09-01), Sutherlin et al.
patent: 2367350 (1945-01-01), Heigl
patent: 2784788 (1957-03-01), Hughes et al.
patent: 2885004 (1959-05-01), Perry
patent: 3254718 (1966-06-01), Dunlap

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