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Real-Time Monitoring of Reactive-Polymer Fracturing for Geothermal Conditions

Achievements, outcomes, and advancements in Task 2 include real-time monitoring of fluid chemistry, unique high-pressure rotor capability, and MAS-NMR technology development for geothermal conditions. Dr. David Hoyt and Dr. D. Heldebrant led the initiatives, with initial time-resolved 13C NMR spectra showcasing promising results under specified conditions.

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Real-Time Monitoring of Reactive-Polymer Fracturing for Geothermal Conditions

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  1. Accomplishments, Results and Progress Task 2: Reactive-Polymer Fracturing • Real-time monitoring of fluid chemistry • Unique High-Pressure Rotor capability for • Magic Angle Spinning 13C NMR (MAS-NMR) developed by Dr. David Hoyt at EMSL • Unparalleled real-time analysis of kinetics and speciation of H2O/CO2 fluid with polymer under geothermal conditions Dr. D. Hoyt Dr. D. Heldebrant 10 h Initial 5 h In situ time-resolved 13C NMR spectra of 1% aqueous polymer. Temperature 100 ºC Pressure = 120 bar H2O/CO2

  2. Accomplishments, Results and Progress Task 2: Reactive-Polymer Fracturing • Current cell performance limited to 120 bar and 150 ˚C • Current data is higher than any other in situ measurement capability but still short of geothermal conditions • Projected cell performance requirements are 300 bar, 300 ˚C Dr. D. Hoyt High pressure sample loading/ reaction chamber Sample MAS NMR probe

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