Methods and compositions for breaking viscosified fluids

Details Methods and compositions for breaking viscosified fluids Methods and compositions for breaking viscosified fluids

1997-11-05

1999-09-14

Suchfield, George

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166308, 507209, 507215, 507921, 507922, E21B 4325, E21B 4326

Patent

active

059507314

ABSTRACT:
The present invention relates to methods of treating subterranean formations and viscosified aqueous well treating compositions which break into thin fluids at temperatures in the range of from about 100.degree. F., to about 300.degree. F. A breaker system is included in the compositions comprised of an alkali metal chlorite or hypochlorite breaker and a breaker activator comprised of copper II ion or an amine, or both.

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