Conventional breakers reduce fracturing-fluid viscosity much too rapidly, even at moderate temperatures (140 to 200°F), to be used at the high concentrations required to degrade polymers within proppant packs. A delayed-release, encapsulated breaker was developed that permits the use of high breaker concentrations and thus significantly increases fracture conductivity.

Keywords:
conductivity, ooo gal, partition, coating, concentration, fracture conductivity, proppant, release mechanism, mechanism, permeability
Subjects:
Fracturing materials (fluids, proppant), Hydraulic Fracturing
Copyright 1992, Society of Petroleum Engineers
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