By Martha Belem Saldivar Márquez,Islam Boussaada,Hugues Mounier,Silviu-Iulian Niculescu
This e-book studies the result of exhaustive examine paintings on modeling and regulate of vertical oil good drilling structures. it's interested in the research of the system-dynamic reaction and the removal 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 equipped in 3 parts.
The first half, Modeling, offers lumped- and distributed-parameter types that let the dynamic habit of the drill string to be characterised; a finished mathematical version bearing in mind mechanical and electrical parts of the final drilling method is usually supplied. The allotted nature of the procedure is accommodated through contemplating a method of wave equations topic to nonlinear boundary stipulations; this version is reworked right into a pair of neutral-type time-delay equations which may triumph over the complexity fascinated by the research and simulation of the partial differential equation model.
The moment half, research, is dedicated to the research of the reaction of the procedure defined by way of the time-delay version; vital houses worthwhile for studying method balance are investigated and frequency- and time-domain strategies are reviewed.
Part III, regulate, matters the layout of stabilizing regulate legislation geared toward casting off bad drilling vibrations; various keep watch over thoughts in line with infinite--dimensional process 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 will be achieved.
This self-contained e-book presents operational guidance to prevent drilling vibrations. in addition, because the modeling and keep an eye on suggestions offered the following could be generalized to regard diversified engineering difficulties, it constitutes an invaluable source to researchers engaged on regulate and its engineering software 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