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This paper presents a nonlinear observer-based control scheme to stabilize the downhole pressure and eliminate riser slugging. A simple empirical model is developed that describes the qualitative behavior of the downhole pressure in case of severe riser slugging. A new nonlinear adaptive observer is developed for state estimations with the new parameter adaptation law. The controller is designed by...
This paper presents a nonlinear observer-based control scheme applied to stabilize riser induced slugging. A simple empirical model is developed that describes the qualitative behavior of the downhole pressure in case of severe riser slugging. A nonlinear observer is developed for estimation of unmeasured states. The developed controller is designed by an integrator backstepping approach to stabilize...
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