Analysis and Control of Oilwell Drilling Vibrations: A by Martha Belem Saldivar Márquez,Islam Boussaada,Hugues

By Martha Belem Saldivar Márquez,Islam Boussaada,Hugues Mounier,Silviu-Iulian Niculescu

This e-book experiences the result of exhaustive study paintings on modeling and keep watch over of vertical oil good drilling structures. it really is considering 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 geared up in 3 parts.

The first half, Modeling, provides lumped- and distributed-parameter versions that let the dynamic habit of the drill string to be characterised; a complete mathematical version considering mechanical and electrical parts of the final drilling procedure is usually supplied. The dispensed nature of the procedure is accommodated through contemplating a process of wave equations topic to nonlinear boundary stipulations; this version is remodeled right into a pair of neutral-type time-delay equations that 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 method defined via the time-delay version; vital houses beneficial for reading approach balance are investigated and frequency- and time-domain concepts are reviewed.

Part III, regulate, matters the layout of stabilizing keep an eye on legislation aimed toward putting off bad drilling vibrations; diversified keep watch over innovations in accordance with infinite--dimensional method representations are designed and evaluated. The regulate proposals are proven to be powerful in suppressing stick-slip and bit-bounce in order that a substantial development of the general drilling functionality may be achieved.

This self-contained booklet presents operational instructions to prevent drilling vibrations. moreover, because the modeling and keep an eye on suggestions provided right here will be generalized to regard assorted engineering difficulties, it constitutes an invaluable source to researchers engaged on regulate and its engineering program in oil good drilling.

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