By Martha Belem Saldivar Márquez,Islam Boussaada,Hugues Mounier,Silviu-Iulian Niculescu
This publication reviews the result of exhaustive examine paintings on modeling and regulate of vertical oil good drilling platforms. it's all in favour of the research of the system-dynamic reaction and the removal of the main harmful drill string vibration modes affecting total perforation functionality: stick-slip (torsional vibration) and bit-bounce (axial vibration). The textual content is equipped in 3 parts.
The first half, Modeling, offers lumped- and distributed-parameter versions that let the dynamic habit of the drill string to be characterised; a accomplished mathematical version making an allowance for mechanical and electrical parts of the general drilling procedure is additionally supplied. The disbursed nature of the process is accommodated by means of 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 which could conquer the complexity inquisitive about the research and simulation of the partial differential equation model.
The moment half, research, is dedicated to the examine of the reaction of the approach defined by means of the time-delay version; vital homes necessary for reading procedure balance are investigated and frequency- and time-domain innovations are reviewed.
Part III, keep watch over, matters the layout of stabilizing keep watch over legislation aimed toward putting off bad drilling vibrations; assorted regulate strategies in response to infinite--dimensional method 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 general drilling functionality might be achieved.
This self-contained ebook offers operational guidance to prevent drilling vibrations. moreover, because the modeling and keep an eye on recommendations offered the following will be generalized to regard diversified engineering difficulties, it constitutes an invaluable source to researchers engaged on keep watch over 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