Method for treating subterranean formations

Details Method for treating subterranean formations Method for treating subterranean formations

1987-01-16

1988-05-03

Novosad, Stephen J.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166308, 252 8551, E21B 4326

Patent

active

047414014

ABSTRACT:
Control release capsules comprising a breaker contained within a enclosure member are employed to break fracturing fluids. The enclosure member is permeable to at least one fluid in the subterranean formation or injected with the capsules such that upon sufficient exposure to the fluid, the capsules rupture, thereby releasing the breaker to the formation. In such manner, the release of the breaker can be conducted in a controlled manner. In addition, the entire amount of breaker introduced into the formation is released.

REFERENCES:
patent: 3952741 (1976-04-01), Baker
patent: 3992317 (1976-11-01), Brichard et al.
patent: 4202795 (1980-05-01), Burnham et al.
patent: 4259205 (1981-03-01), Murphey
patent: 4382003 (1983-05-01), Kucera et al.
patent: 4506734 (1985-03-01), Nolte
patent: 4610795 (1986-09-01), Norris

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