Go straight to content
<
<
Ulf

Ulf Jakob Flø Aarsnes

Senior Researcher

ulaa@norceresearch.no
+47 51 87 56 71
Tullins gate 2, 0166 Oslo, Norway

I am a senior researcher with the Drilling and Well Modeling group at the NORCE Energy department, and the recipient of a MSCA Individual Fellowship and FRIPRO Mobility stipend. I am the project leader of the Robust Estimation and Control of Infinite Dimensional Systems (RECIDS) project: This project is focused on the development and implementation of model-based control and estimation algorithms for systems described by PDEs (i.e. infinite dimensional systems). Before the mobility stipend I received my PhD at NTNU in the Intelligent Drilling -- Automated Underbalanced Drilling Operations project, and then worked as a PostDoc in the DrillWell program. I spent one year from 2018-2019 working with Prof. Miroslav Krstic at the University of California at San Diego and one year from 2019-2020 working with Prof. Florent Di Meglio at Mines ParisTech, France. In May 2018 I organized the “Fourth International Colloquium on Non-linear dynamics and control of deep drilling systems” in Stavanger, Norway.

Ulf Jakob Flø Aarsnes

Division

Energy & Technology

Research Groups

Energy Modelling and Automation

More information about Ulf

See profile in Cristin

Projects

See all
See all
Publications
Evaluation of distributed damping subs with active control for stick–slip reduction in drilling – Geoenergy Science and Engineering 2023
Boundary Control and Estimation for Under-Balanced Drilling with Uncertain Reservoir Parameters – IEEE Transactions on Control Systems Technology 2023
Modeling and Analysis of Non-Rotating Damping Subs for Removing Torsional Vibrations in Drilling – 2022
Self-Tuning Torsional Drilling Model for Real-Time Applications – American Control Conference (ACC) 2020
A phenomenological transient model of bit foundering – Journal of Petroleum Science and Engineering 2020
Robust control design of underactuated 2× 2 PDE-ODE-PDE systems – IEEE Control Systems Letters 2020
Closed-loop tool face control with the bit off-bottom – Journal of Process Control 2020
Robust output feedback stabilization of an ODE–PDE–ODE interconnection – Automatica 2020
Axial and torsional self-excited vibrations of a distributed drill-string – Journal of Sound and Vibration 2019
Delay robust control design of under-actuated PDE-ODE-PDE systems – American Control Conference (ACC) 2019
Effect of shock subs on self-excited vibrations in drilling systems – Journal of Petroleum Science and Engineering 2019
Extremum seeking for real-time optimal drilling control – American Control Conference (ACC) 2019
Estimating friction factors while drilling – Journal of Petroleum Science and Engineering 2019
Benchmarking of Industrial Stick-Slip Mitigation Controllers – IFAC-PapersOnLine 2018
Delay-Robust Control Design for Two Heterodirectional Linear Coupled Hyperbolic PDEs – IEEE Transactions on Automatic Control 2018
Effects of latency, motor inertia and filtering on stick-slip mitigation control – 2018
ADVANCES IN CONTROL OF HYPERBOLIC PARTIAL DIFFERENTIAL EQUATIONS: OPPORTUNITIES FOR DRILLING – 2018
Stick-slip and torsional friction factors in inclined wellbores – MATEC Web of Conferences 2018
Robust output regulation of 2x 2 hyperbolic systems: Control law and Input-to-State Stability – American Control Conference (ACC) 2018
Avoiding stick slip vibrations in drilling through startup trajectory design – Journal of Process Control 2018
Flow and pressure control of underbalanced drilling operations using NMPC – Journal of Process Control 2018
Transient modeling of one-dimensional solid-liquid flow in conduits – International Journal of Multiphase Flow 2018
Dynamics of a distributed drill string system: Characteristic parameters and stability maps – Journal of Sound and Vibration 2018
Torsional vibrations with bit off bottom: Modeling, characterization and field data validation – Journal of Petroleum Science and Engineering 2018
State and Parameter Estimation of a Drift-Flux Model for Underbalanced Drilling Operations – IEEE Transactions on Control Systems Technology 2017
Review of two-phase flow models for control and estimation – Annual Reviews in Control 2016
Robust controller design for automated kick handling in managed pressure drilling – Journal of Process Control 2016
Real-time estimation of reservoir influx rate and pore pressure using a simplified transient two-phase flow model – Journal of Natural Gas Science and Engineering 2016
A simplified two-phase flow model using a quasi-equilibrium momentum balance – International Journal of Multiphase Flow 2016
Linear stability analysis of self-excited vibrations in drilling using an infinite dimensional model – Journal of Sound and Vibration 2016
A methodology for classifying operating regimes in underbalanced-drilling operations – SPE Journal 2016
Estimation of states and parameters of a drift-flux model with unscented kalman filter – IFAC-PapersOnLine 2015
A distributed parameter systems view of control problems in drilling – IFAC-PapersOnLine 2015
Fit-for-Purpose Modeling for Automation of Underbalanced Drilling Operations – 2014
CONTROL-ORIENTED DRIFT-FLUX MODELING OF SINGLE AND TWO-PHASE FLOW FOR DRILLING – 2014
Modeling and avoidance of heave-induced resonances in offshore drilling – SPE Drilling & Completion 2014
An adaptive observer for hyperbolic systems with application to UnderBalanced Drilling – Elsevier IFAC Publications / IFAC Proceedings series 2014
Limits of Controller Performance in the Heave Disturbance Attenuation Problem – 2013
Quantifying Error Introduced by Finite Order Discretization of a Hydraulic Well Model – 2012
Modeling for MPD operations with experimental validation – 2009
See all publications in Cristin

News