Fracturing with a mixture of carbon dioxide and alcohol

Details Fracturing with a mixture of carbon dioxide and alcohol Fracturing with a mixture of carbon dioxide and alcohol

1988-12-23

1989-12-19

Suchfield, George A.

Wells

Processes

Placing fluid into the formation

166280, 252 8551, E21B 4326, E21B 43267

Patent

active

048876712

ABSTRACT:
The invention is a method of fracturing an underground formation penetrated by a wellbore, which comprises injecting into a formation a mixture of carbon dioxide and a polar alcohol or polar glycol additive at a temperature and pressure above the critical temperature and pressure of carbon dioxide. The alcohol or glycol additive should have less than about 9 carbon atoms and comprises about 0.1% to about 10% by weight of the injected mixture. The mixture is injected with sufficient volume and pressure to cause a fracture to be formed in the underground formation.

REFERENCES:
patent: 3664422 (1972-05-01), Bullen
patent: 4156464 (1979-05-01), Hussin
patent: 4324668 (1982-04-01), Harris
patent: 4374545 (1983-02-01), Bullen et al.
patent: 4393934 (1983-07-01), Savins et al.
patent: 4400034 (1983-08-01), Chew
patent: 4519455 (1985-05-01), Holtmeyer et al.
patent: 4567947 (1986-02-01), Mzik

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