Blar i NTNU Open på forfatter "Johannessen, Morten Krøtøy"
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Stick-Slip Prevention of Drill Strings Using Nonlinear Model Reduction and Nonlinear Model Predictive Control
Johannessen, Morten Krøtøy; Myrvold, Torgeir (Master thesis, 2010)The main focus of this thesis is aspects in the development of a system for prevention of stick-slip oscillations in drill strings that are used for drilling oil wells. Stick-slip is mainly caused by elasticity of the drill ...