By Martha Belem Saldivar Márquez,Islam Boussaada,Hugues Mounier,Silviu-Iulian Niculescu
This e-book reviews the result of exhaustive learn paintings on modeling and keep an eye on of vertical oil good drilling platforms. it really is excited by the research of the system-dynamic reaction and the removing of the main destructive drill string vibration modes affecting total perforation functionality: stick-slip (torsional vibration) and bit-bounce (axial vibration). The textual content is geared up in 3 parts.
The first half, Modeling, provides lumped- and distributed-parameter types that let the dynamic habit of the drill string to be characterised; a complete mathematical version considering mechanical and electrical parts of the general drilling process is usually supplied. The dispensed nature of the process is accommodated via contemplating a method of wave equations topic to nonlinear boundary stipulations; this version is remodeled right into a pair of neutral-type time-delay equations that can conquer the complexity concerned about the research and simulation of the partial differential equation model.
The moment half, research, is dedicated to the research of the reaction of the approach defined by way of the time-delay version; very important homes priceless for examining process balance are investigated and frequency- and time-domain suggestions are reviewed.
Part III, keep watch over, matters the layout of stabilizing regulate legislation aimed toward putting off bad drilling vibrations; different keep watch over recommendations in accordance with infinite--dimensional method representations are designed and evaluated. The keep watch over proposals are proven to be powerful in suppressing stick-slip and bit-bounce in order that a substantial development of the final drilling functionality could be achieved.
This self-contained e-book offers operational directions to prevent drilling vibrations. additionally, because the modeling and regulate ideas offered right here should be generalized to regard various engineering difficulties, it constitutes an invaluable source to researchers engaged on regulate and its engineering program in oil good drilling.
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Analysis and Control of Oilwell Drilling Vibrations: A Time-Delay Systems Approach (Advances in Industrial Control) by Martha Belem Saldivar Márquez,Islam Boussaada,Hugues Mounier,Silviu-Iulian Niculescu