Method for acidizing a subterranean formation

Details Method for acidizing a subterranean formation Method for acidizing a subterranean formation

1977-08-15

1979-05-01

Novosad, Stephen J.

Wells

Processes

Placing fluid into the formation

E21B 4327

Patent

active

041518799

ABSTRACT:
The permeability of a subterranean formation is increased by injecting into the formation, a conventional mud acidizing solution (HCl/HF) followed by a fluoboric acid solution. Use of fluoboric acid as an overflush is believed to deter clay migration and thereby significantly reduce or delay production decline which is often otherwise encountered shortly after conventional mud acidizing treatments.

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patent: 2885004 (1959-05-01), Perry
patent: 3283816 (1966-11-01), Bradley
patent: 3441085 (1969-04-01), Gidley
patent: 3543856 (1970-12-01), Knox et al.

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