During the fracture treatment, the stimulation fluid must be able to return to a low viscosity fluid state once the proppant is placed. This helps minimise the return of proppants–keeping the majority of proppant in the fractured zone–and maximise the return of fluids to the surface. Breakers are used to decrease fluid viscosity.
Breakers or gel breakers are specialised chemicals that ‘break’ the polymers and crosslinkers in the frac fluid, reducing the fluid viscosity and allowing easier cleanup after the treatment. The GelBrake series of live and encapsulated oxidising breakers can be used in hydraulic fracturing applications, at the end of jobs, and during flushes.
A S Harrison & Co offers a series of live and encapsulated oxidizing breakers that are specifically formulated for use in hydraulic fracturing applications, at the end of jobs, and during flushes. The effective temperature ranges are 130° to 220°F.
GelBrake™ 410 is a high-temperature oxidising breaker used to break down crosslinked polymers.