Oxidative internal breaker system with breaking activators...

Details Oxidative internal breaker system with breaking activators... Oxidative internal breaker system with breaking activators...

C - Chemistry, Metallurgy

09

K

C09K 8/68 (2006.01) C09K 8/575 (2006.01) E21B 43/25 (2006.01)

Patent

CA 2635868

Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Bromate oxidizing agents are used along with selected breaking activators for the bromate breaking compounds. Useful bromate breaking activators include acid-generating breaking activators, oxidizing sulfur containing breaking activators, and reducing agent breaking activators.

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