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Predictive pressure control in deep geothermal systems

We present a predictive control scheme to regulate the fluid pressure in the reservoir rock of deep geothermal systems. Controlling the fluid pressure profile is important to avoid strong seismic events during hydraulic stimulation. The introduced predictive controller builds on a nonlinear, uncertain, and non-differentiable model describing the pressurization and seismicity in the reservoir. Since measurements of system states are limited, we additionally design an unscented Kalman filter to solve the observation problem.