Encapsulated breaker chemical

Details Encapsulated breaker chemical Encapsulated breaker chemical

1991-01-04

1992-04-07

Stoll, Robert L.

Compositions

Leather or fur treating

252 8553, 25218632, 252330, 252358, 42840222, 166308, 427213, E21B 4326

Patent

active

051025582

ABSTRACT:
An encapsulated breaker chemical composition used in a fracturing process in the protection of an oil or gas stimulation operation which comprises: a breaker chemical; and a pinhole free coating of a neutralized sulfonated elastomeric polymer of about 2 to about 80 microns thick deposited onto the surface of the breaker chemical, wherein said neutralized sulfonated polymer encapsulates the breaker chemical, wherein the neutralized sulfonated polymer is permeable to the breaker chemical and the neutralized sulfonated polymer is non-reactive to the breaker chemical.

REFERENCES:
patent: 3990978 (1976-11-01), Hill
patent: 4627850 (1986-12-01), Deters et al.
patent: 4701204 (1987-10-01), Duvdevani et al.
patent: 4741401 (1988-05-01), Walles et al.
patent: 4741956 (1988-05-01), Thaler et al.
patent: 4770796 (1988-09-01), Jacobs
patent: 4788081 (1988-11-01), Thaler et al.
patent: 4919209 (1990-04-01), King
patent: 4979980 (1990-12-01), Thaler et al.
patent: 4988377 (1991-01-01), Manalastas et al.
patent: 4997470 (1991-03-01), Thaler et al.

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