Journal Papers

• [J1] U. J. F. Aarsnes, M. S. Gleditsch, O. M. Aamo, and A. Pavlov, “Modeling and Avoidance of Heave Induced Resonances in Offshore Drilling,” SPE Drill. Complet., vol. 29, no.04, pp. 454-464, Dec. 2014.
• [J2] U. J. F. Aarsnes and O. M. Aamo, “Linear stability analysis of self-excited vibrations in drilling using an infinite dimensional model," J. Sound Vib., vol. 360, pp. 239–259, Jan. 2016.
• [J3] U. J. F. Aarsnes, F. Di Meglio, R. Graham, and O. M. Aamo, “A Methodology for Classifying Operating Regimes in Underbalanced Drilling Operations,” SPE J., vol. 21, no.02, Apr. 2016.
• [J4] A. Ambrus, U. J. F. Aarsnes, A. Karimi Vajargah, B. Akbari, E. van Oort, and O. M. Aamo, “Real-Time Estimation of Reservoir Influx Rate and Pore Pressure Using a Simplified Transient Two-Phase Flow Model for Managed Pressure Drilling Operations,” J. Nat. Gas Sci. Eng., vol. 32, pp. 439–452, 2016.
• [J5] U. J. F. Aarsnes, B. Acikmese, A. Ambrus, and O. M. Aamo, “Robust Controller Design for Automated Kick Handling in Managed Pressure Drilling”. J. of Process Control, vol. 47, pp. 46–57, Nov. 2016.
• [J6] U. J. F. Aarsnes, A. Ambrus, F. Di Meglio, A. Karimi Vajargah, E. van Oort, and O. M. Aamo. “A Simplified Two-Phase Flow Model Using a Quasi-Equilibrium Momentum Balance”. Int. J. of Multiph. flow, vol. 83, pp 77-85, Mar. 2016.
• [J7] U. J. F. Aarsnes, T. Flåtten, and O. M. Aamo, “Review of two-phase flow models for control and estimation,” Annu. Rev. Control, vol. 42, pp. 50--62, Jul. 2016.
• [J8] A. Nikoofard, U. J. F. Aarsnes, T. A. Johansen, and G.O. Kaasa, “State and Parameter Estimation of a Drift-Flux Model for Underbalanced Drilling Operations,” IEEE Trans. Control Syst. Technol., pp. 1–10, 2017.
• [J9] T. Pedersen, U. J. F. Aarsnes, and J. M. Godhavn, “Flow and pressure control of underbalanced drilling operations using NMPC”. J. of Process Control, 68, 73–85. 2018.
• [J10] U. J. F. Aarsnes and R. J. Shor, “Torsional vibrations with bit off bottom: Modeling, characterization and field data validation,” J. Pet. Sci. Eng., vol. 163, pp. 712–721, Apr. 2018.
• [J11] U. J. F. Aarsnes and N. van de Wouw, “Dynamics of a distributed drill string system: Characteristic parameters and stability maps,” J. Sound Vib., vol. 417, pp. 376–412, Mar. 2018.
• [J12] Auriol, U. J. F. Aarsnes, P. Martin, and F. Di Meglio, “Delay-robust control design for heterodirectional linear coupled hyperbolic PDEs,” IEEE Trans. Automat. Contr., vol. 63, no. 10, pp. 3551–3557, Sep. 2018.
• [J13] U. J. F. Aarsnes, and A. Busch, “Transient modeling of one-dimensional solid-liquid flow in conduits,” Int. J. of Multiph. flow, 105(August), 102–111. 2018.
• [J14] U. J. F. Aarsnes, F. Di Meglio, and R. J. Shor, “Avoiding stick slip vibrations in drilling through startup trajectory design”. J. of Process Control, 70, 24–35. 2018.
• [J15] U. J. F. Aarsnes and N. van de Wouw, “Axial and torsional self-excited vibrations of a distributed drill-string,” J. Sound Vib., vol 444, pp. 127-151, Mar. 2019.
• [J16] U. J. F. Aarsnes and N. van de Wouw, “Effect of shock subs on self-excited vibrations in drilling systems,” J. Pet. Sci. Eng., vol. 181, p. 106217, Oct. 2019.
• [J17] U. J. F. Aarsnes, J. Auriol, F. Di Meglio, and R. J. Shor, “Estimating friction factors while drilling,” J. Pet. Sci. Eng., vol. 179, pp. 80–91, Aug. 2019.
• [J18] F. Di Meglio, P. Lamare, and U. J. F. Aarsnes, “Robust output feedback stabilization of ODE-PDE-ODE interconnection,” Automatica, vol. 119, 2020.
• [J19] J. Auriol, R. J. Shor, U. J. F. Aarsnes, and F. Di Meglio, “Closed-loop toolface control with the bit off-bottom,” J. of Process Control, 90, 35–45. 2020.
• [J20] J. Auriol, U. J. F. Aarsnes, F. Di Meglio, R. Shor, “Robust control design of underactuated 2× 2 PDE-ODE-PDE systems,” IEEE Contrl Syst. Letters, vol. 5, no. 2, pp. 469–474. 2020.
• [J21] U. J. F. Aarsnes, A. Ambrus, F. Di Meglio, L. Gerbaud “A phenomenological transient model of bit foundering,” Journal of Petroleum Science and Engineering 199, 108299. 2021.
• [J22] T. Strecker, U. J. F. Aarsnes “Boundary Control and Estimation for Underbalanced Drilling With Uncertain Reservoir Parameters,” IEEE Transactions on Control Systems Technology, vol. 31, no. 1, pp. 281–294. 2022.
• [J23] P. M. Nüsse, A. Ambrus, U. J. F. Aarsnes, O. M. Aamo “Evaluation of distributed damping subs with active control for stick–slip reduction in drilling,” Geoenergy Science and Engineering, vol. 231, Part A, 212255. 2023.
• [J24] J. Shi, U. J. F. Aarsnes, D. Nærheim, S. Moura, “Online energy management system for a fuel cell/battery hybrid system with multiple fuel cell stacks,” Submitted. 2023.

Conference Proceedings

• [C1] I. S. Landet, H. Mahdianfar, U. J. F. Aarsnes, A. Pavlov, and O. M. Aamo, “Modeling for MPD Operations With Experimental Validation,” in IADC/SPE Drilling Conference and Exhibition, 2012.
• [C2] U. J. F. Aarsnes, O. M. Aamo, and A. Pavlov, “Quantifying Error Introduced by Finite Order Discretization of a Hydraulic Well Model,” in Australian Control Conference, 2012, pp. 54–59.
• [C3] U. J. F. Aarsnes, O. M. Aamo, E. Hauge, and A. Pavlov, “Limits of Controller Performance in the Heave Disturbance Attenuation Problem,” in Control Conference (ECC), 2013 European, 2013, pp. 1070–1076.
• [C4] U. J. F. Aarsnes, F. Di Meglio, O. M. Aamo, and G.-O. Kaasa, “Fit-for-Purpose Modeling for Automation of Underbalanced Drilling Operations,” in SPE/IADC Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, 2014.
• [C5] F. Di Meglio, D. Bresch-Pietri, and U. J. F. Aarsnes, “An Adaptive Observer for Hyperbolic Systems with Application to Under Balanced Drilling,” in IFAC World Congress 2014, South Africa, 2014, pp. 11391–11397.
• [C6] U. J. F. Aarsnes, H. Mahdianfar, O. M. Aamo and A. Pavlov. “Rejection of Heave-Induced Pressure Oscillations in Managed Pressure Drilling," presented at the Colloquium on Nonlinear Dynamics and Control of Deep Drilling Systems, Minneapolis, Minnesota, May 2014. (Invited Paper).
• [C7] U. J. F. Aarsnes, F. Di Meglio, S. Evje, and O. M. Aamo, “Control-Oriented Drift-Flux Modeling of Single and Two-Phase Flow for Drilling,” in Proceeding of the ASME 2014 Dynamic Systems and Control Conference, 2014.
• [C8] F. Di Meglio and U. J. F. Aarsnes, “A distributed parameter systems view of control problems in drilling," in 2nd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production, 2015.
• [C9] A. Nikoofard, U. J. F. Aarsnes, T. A. Johansen and G.-O. Kaasa, “Estimation of States and Parameters of Drift-Flux Model with Unscented Kalman Filter," in 2nd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production, 2015.
• [C10] U. J. F. Aarsnes, A. Ambrus, A. Karimi Vajargah, O. M. Aamo, and E. Van Oort, “A Simplified Gas-Liquid Flow Model for Kick Mitigation and Control During Drilling Operations,” in Proceeding of the ASME 2015 Dynamic Systems and Control Conference. ASME Energy Systems Best Paper Award Finalist.
• [C11] A. Ambrus, U. J. F. Aarsnes, A. Karimi Vajargah and E. van Oort, “A Simplified Transient Multi-Phase Model for Automated Well Control Applications,” in 9th International Petroleum Conf. (IPTC), 2015.
• [C12] U. J. F. Aarsnes, E. Hauge and J.-M. Godhavn, “Mathematical Modeling of Gas in Riser,” in SPE Deepwater Drilling & Completions Conf., 2016.
• [C13] U. J. F. Aarsnes, and N. van de Wouw, “Axial and torsional dynamics of a distributed drill string system,” at European Nonlinear Dynamics Conference (ENOC), 2017.
• [C14] U. J. F. Aarsnes and R. J. Shor, “Stick-slip and torsional friction factors in inclined wellbores,” in MATEC Web of Conferences, 2018.
• [C15] P.-O. Lamare, J. Auriol, F. di Meglio, and U. J. F. Aarsnes, “Robust output regulation of 2 × 2 hyperbolic systems: Control law and Input-to-State Stability,” in American Control Conference (ACC), 2018.
• [C16] U. J. F. Aarsnes, F. Meglio, and R. J. Shor, “Benchmarking of Industrial Stick-Slip Mitigation Controllers,” in IFAC Workshop on Automatic Control in Offshore Oil and Gas Production, 2018.
• [C17] R. J. Shor, U. J. F. Aarsnes and F. Di Meglio, “Effects of latency, motor inertia and filtering on stick-slip mitigation control”, presented at the Colloquium on Nonlinear Dynamics and Control of Deep Drilling Systems, Stavanger, Norway, May 2018. (Invited Paper).
• [C18] F. Di Meglio, U. J. F. Aarsnes, and R. J. Shor, “Advances in control of Hyperbolic Partial Differential Equations: opportunities for drilling”, presented at the Colloquium on Nonlinear Dynamics and Control of Deep Drilling Systems, Stavanger, Norway, May 2018. (Invited Paper).
• [C19] U. J. F. Aarsnes, O. M. Aamo and M. Krstic, “Extremum seeking for real-time optimal drilling control”, in American Control Conference (ACC), 2019.
• [C20] U. J. F. Aarsnes, R. Vazquez, F Di Meglio and M. Krstic. “Delay robust control design of under-actuated PDE-ODE-PDE systems”, in American Control Conference (ACC), 2019.
• [C21] P. Pastusek, G. Payette, R. Shor, E. Cayeux, U. J. F. Aarsnes, et al., “Creating Open Source Models, Test Cases, and Data for Oilfield Drilling Challenges” in SPE/IADC International Drilling Conference and Exhibition, 2019.
• [C22] J. Auriol, U. J. F. Aarsnes and R. Shor, "Self-Tuning Torsional Drilling Model for Real-Time Applications," 2020 American Control Conference (ACC), 2020, pp. 3091-3096.
• [C23] J. Auriol, U. J. F. Aarsnes, F. Di Meglio and R. Shor, "Robust control design of underactuated 2 × 2 PDE-ODE-PDE systems,” in 59th IEEE Conference on Decision and Control (CDC), 2020.
• [C24] A. Ambrus, U. J. F. Aarsnes, E. Cayeux, R. Mihai “Modeling and Analysis of Non-Rotating Damping Subs for Removing Torsional Vibrations in Drilling,” in International Conference on Offshore Mechanics and Arctic Engineering, 2022.
• [C25] A. G. Aribowo, U. J. F. Aarsnes, E. Detournay, N. van de Wouw, N. Reimers. "Performance Analysis of a Downhole Regulator on Rate-Of-Penetration and Drilling Efficiency: An Autonomous Load Management at Bit." in SPE/IADC International Drilling Conference and Exhibition, 2023.