By Martha Belem Saldivar Márquez,Islam Boussaada,Hugues Mounier,Silviu-Iulian Niculescu
This publication experiences the result of exhaustive learn paintings on modeling and regulate of vertical oil good drilling structures. it really is curious about 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 permit the dynamic habit of the drill string to be characterised; a finished mathematical version bearing in mind mechanical and electrical parts of the general drilling approach is usually supplied. The allotted nature of the approach is accommodated by means of contemplating a procedure of wave equations topic to nonlinear boundary stipulations; this version is remodeled right into a pair of neutral-type time-delay equations which could conquer the complexity excited by the research and simulation of the partial differential equation model.
The moment half, research, is dedicated to the learn of the reaction of the procedure defined via the time-delay version; very important homes beneficial for interpreting approach balance are investigated and frequency- and time-domain suggestions are reviewed.
Part III, regulate, matters the layout of stabilizing regulate legislation aimed toward taking away bad drilling vibrations; different keep watch over concepts in line with infinite--dimensional approach representations are designed and evaluated. The keep an eye on proposals are proven to be powerful in suppressing stick-slip and bit-bounce in order that a substantial development of the final drilling functionality should be achieved.
This self-contained publication offers operational directions to prevent drilling vibrations. in addition, because the modeling and keep watch over recommendations offered right here will be generalized to regard different engineering difficulties, it constitutes an invaluable source to researchers engaged on regulate and its engineering program in oil good drilling.
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Additional info for Analysis and Control of Oilwell Drilling Vibrations: A Time-Delay Systems Approach (Advances in Industrial Control)
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