Methods of fracture acidizing subterranean formations

Details Methods of fracture acidizing subterranean formations Methods of fracture acidizing subterranean formations

1992-07-01

1993-08-24

Novosad, Stephen J.

Wells

Processes

Placing fluid into the formation

166308, E21B 4326, E21B 4327

Patent

active

052380688

ABSTRACT:
Improved methods of fracture-acidizing producing zones in subterranean formations are provided. The methods basically comprise creating one or more fractures in the zone, causing the fractures to close and injecting acid into and through the closed fractures so that flow channels are formed therein. The fractures are then extended in the zone, caused to close and acid is injected through the previously formed flow channels and through the extended portions of the fractures so that flow channels are formed in the extended portions. The steps of extending the fractures, causing the fractures to close and injecting acid are repeated until fractures having flow channels formed therein are extended desired distances in the zone.

REFERENCES:
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patent: 4245702 (1981-01-01), Haafkens et al.
patent: 4249609 (1981-02-01), Haafkens et al.
patent: 4739832 (1988-04-01), Jennings, Jr. et al.
patent: 4807703 (1989-02-01), Jennings, Jr.

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