chemical degradation of polyacrylamide during hydraulic at monaco

chemical degradation of polyacrylamide during hydraulic at monaco
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  • What happens to polyacrylamide based friction reducers in slickwater hydraulic fracturing fluids?
  • Polyacrylamide (PAM) based friction reducers are a primary ingredient of slickwater hydraulic fracturing fluids. Little is known regarding the fate of these polymers under downhole conditions, which could have important environmental impacts including decisions on strategies for reuse or treatment of flowback water.
  • Does high volume hydraulic fracturing cause degradation of polyacrylamide?
  • Here we explore a non-chemical mechanism-mechanical degradation of polyacrylamide under ultrahigh shear rates unique to high volume hydraulic fracturing operations. The fundamental understanding enables us to estimate the extent and chemistry of degradation given geological and operational conditions.
  • Does shale fracturing cause oxidative degradation of Pam?
  • The shale sample adsorbed some PAM (∼30%), but importantly it catalyzed the chemical degradation of PAM, likely due to dissolution of Fe 2+ at low pH. These results provide the first evidence of radical-induced degradation of PAM under HPT hydraulic fracturing conditions without additional oxidative breaker.
  • Does a non-chemical pathway-mechanical degradation of polyacrylamide exist during HVHF?
  • This study focused on a non-chemical pathway-mechanical degradation of polyacrylamide under ultra-high fluid strain conditions (∼10 7 s −1) that uniquely exist during HVHF but has not yet been explored experimentally.