Blar i Artikler, kapitler og presentasjoner fra NORCE Energi og teknologi på forfatter "Aarsnes, Ulf Jakob Flø"
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Extremum seeking for real-time optimal drilling control
Aarsnes, Ulf Jakob Flø; Aamo, Ole Morten; Krstic, Miroslav (Peer reviewed; Journal article, 2019)This paper demonstrate the feasibility and illustrates some challenges of applying extremum seeking control to online optimization of the drilling process. Specifically, we consider the problem of finding the hook-load ... -
Stick-slip and torsional friction factors in inclined wellbores
Aarsnes, Ulf Jakob Flø; Shor, Roman (Peer reviewed; Journal article, 2018)Stick slip is usually considered a phenomenon of bit-rock interaction, but is also often observed in the field with the bit off bottom. In this paper we present a distributed model of a drill string with an along-string ...