Performance Evaluation and Field Application of a Multifunctional Proppant
The performance and field application of a multifunctional proppant were evaluated from three aspects:suspension,drag reduction,and hydrolysis,which are beneficial for improving hydraulic fracture far-end support and good compatibility.Experiments have shown that proppants can be uniformly suspended in clean water without the use of external thickeners,with a static suspension rate of ≥ 60％,which is much higher than the suspension rate of conventional proppants.After the outer layer of the support agent is coated with film and hydrated,it has a composite drag reduction effect,which can achieve drag reduction through clear water configuration.At higher temperatures,the composite proppant mixture accelerates its own hydration,and the viscosity after hydrolysis is ≤ 3 mPa·s.This multifunctional proppant has been fully applied in unconventional reservoirs in medium and deep layers,and has shown good effects in reducing wellhead pumping pressure and increasing single well production.
far-end supportsingle well productionhigh pumping pressuresuspensiondrag reductionhydrolysis
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