By Martha Belem Saldivar Márquez,Islam Boussaada,Hugues Mounier,Silviu-Iulian Niculescu
This publication experiences the result of exhaustive learn paintings on modeling and keep an eye on of vertical oil good drilling platforms. it's involved in 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 prepared 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 complete mathematical version bearing in mind mechanical and electrical parts of the general drilling approach is usually supplied. The dispensed nature of the approach is accommodated through contemplating a process of wave equations topic to nonlinear boundary stipulations; this version is reworked right into a pair of neutral-type time-delay equations that can triumph over the complexity focused on the research and simulation of the partial differential equation model.
The moment half, research, is dedicated to the examine of the reaction of the procedure defined by means of the time-delay version; vital homes worthy for interpreting process balance are investigated and frequency- and time-domain suggestions are reviewed.
Part III, regulate, matters the layout of stabilizing regulate legislation aimed toward disposing of bad drilling vibrations; diversified regulate options in response to infinite--dimensional process representations are designed and evaluated. The keep watch over proposals are proven to be potent in suppressing stick-slip and bit-bounce in order that a substantial development of the final drilling functionality will be achieved.
This self-contained booklet offers operational instructions to prevent drilling vibrations. additionally, because the modeling and keep watch over strategies offered the following will be generalized to regard diversified engineering difficulties, it constitutes an invaluable source to researchers engaged on keep an eye on and its engineering program in oil good drilling.
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Extra 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