Ulf Jakob F. Aarsnes
Ulf Jakob F. Aarsnes, NORCE
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Delay-robust control design for two heterodirectional linear coupled hyperbolic PDEs
J Auriol, UJF Aarsnes, P Martin, F Di Meglio
IEEE Transactions on Automatic Control 63 (10), 3551-3557, 2018
Axial and torsional self-excited vibrations of a distributed drill-string
UJF Aarsnes, N van de Wouw
Journal of Sound and Vibration 444, 127-151, 2019
Dynamics of a distributed drill string system: Characteristic parameters and stability maps
UJF Aarsnes, N van de Wouw
Journal of Sound and Vibration 417, 376-412, 2018
Linear stability analysis of self-excited vibrations in drilling using an infinite dimensional model
UJF Aarsnes, OM Aamo
Journal of Sound and Vibration 360, 239-259, 2016
Torsional vibrations with bit off bottom: Modeling, characterization and field data validation
UJF Aarsnes, RJ Shor
Journal of Petroleum Science and Engineering 163, 712-721, 2018
An adaptive observer for hyperbolic systems with application to UnderBalanced Drilling
F Di Meglio, D Bresch-Pietri, UJF Aarsnes
Proceeding of the 2014 IFAC World Congress, 11391-11397, 2014
A distributed parameter systems view of control problems in drilling
F Di Meglio, UJF Aarsnes
IFAC-PapersOnLine 48 (6), 272-278, 2015
Review of two-phase flow models for control and estimation
UJF Aarsnes, T Flåtten, OM Aamo
Annual Reviews in Control 42, 50-62, 2016
Control-oriented drift-flux modeling of single and two-phase flow for drilling
UJF Aarsnes, F Di Meglio, S Evje, OM Aamo
Dynamic Systems and Control Conference 46209, V003T37A003, 2014
Avoiding stick slip vibrations in drilling through startup trajectory design
UJF Aarsnes, F Di Meglio, RJ Shor
Journal of Process Control 70, 24-35, 2018
A simplified two-phase flow model using a quasi-equilibrium momentum balance
UJF Aarsnes, A Ambrus, F Di Meglio, AK Vajargah, OM Aamo, E van Oort
International Journal of Multiphase Flow 83, 77-85, 2016
Real-time estimation of reservoir influx rate and pore pressure using a simplified transient two-phase flow model
A Ambrus, UJF Aarsnes, AK Vajargah, B Akbari, E van Oort, OM Aamo
Journal of Natural Gas Science and Engineering 32, 439-452, 2016
Robust output feedback stabilization of an ODE–PDE–ODE interconnection
F Di Meglio, PO Lamare, UJF Aarsnes
Automatica 119, 109059, 2020
Modeling for MPD Operations With Experimental Validation
I Landet, H Mahdianfar, A Pavlov, OM Aamo, UJF Aarsnes
IADC/SPE Drilling Conference and Exhibition, 2012
A simplified transient multi-phase model for automated well control applications
A Ambrus, UJF Aarsnes, AK Vajargah, B Akbari, E Oort
International Petroleum Technology Conference, D041S059R001, 2015
Robust output regulation of hyperbolic systems: Control law and Input-to-State Stability
PO Lamare, J Auriol, FD Meglio, UJF Aarsnes
American Control Conference (ACC), 2018
Robust controller design for automated kick handling in managed pressure drilling
UJF Aarsnes, B Açıkmeşe, A Ambrus, OM Aamo
Journal of Process Control 47, 46-57, 2016
Modeling and avoidance of heave-induced resonances in offshore drilling
UJ Aarsnes, MS Gleditsch, OM Aamo, A Pavlov
SPE Drilling & Completion 29 (04), 454-464, 2014
Extremum seeking for real-time optimal drilling control
UJF Aarsnes, OM Aamo, M Krstic
2019 American Control Conference (ACC), 5222-5227, 2019
Modeling of Two-Phase Flow for Estimation and Control of Drilling Operations
UJF Aarsnes
Norwegian University of Science and Technology, 2016
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