Acidic internal breaker for viscoelastic surfactant fluids in brine
作者： Leiming Li , Toan Bui , Carlos Abad , Lijun Lin
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摘要: Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly use in hydraulic fracturing. Breaking pores is accomplished without mechanical intervention or a second fluid. Acidic internal breakers such as sulfuric acid nitric used. The break may be accelerated, example with free radical propagating species, retarded, an oxygen scavenger.
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