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Qatar Foundation Annual Research Conference Proceedings Volume 2016 Issue 1
Volume 11B: 46th Design Automation Conference (DAC)
Metamodel Based Forward and Inverse Design for Passive Vibration SuppressionAperiodic metamaterials represent a class of structural systems that are composed of different building blocks (cells), instead of a self-repeating chain of the same unit cells. Optimizing aperiodic cellular structural systems thus presents high-dimensional design problems, that become intractable to solve using purely high-fidelity structural analysis coupled with optimization. Specialized analytical modeling along with metamodel based optimization can provide a more tractable alternative to designing such aperiodic metamaterials. To explore this concept, this paper presents an initial design automation framework applied to a case study representative of a simple 1D metamaterial system. The case under consideration is a drill string, where vibration suppression is of utmost importance. The drill string comprises a set of nonuniform rings attached to the outer surface of a longitudinal rod. As such, the resultant system can now be perceived as an aperiodic 1D metamaterial with each ...
Drill string vibrations and shocks (V&S) can limit the optimization of drilling performance, which is a key problem for trajectory optimizing, wellbore design, increasing drill tools life, rate of penetration, and intelligent drilling. The directional wells and other special trajectory drilling technologies are often used in deep water, deep well, hard rock, and brittle shale formations. In drilling these complex wells, the cost caused by V&S increases. According to past theories, indoor experiments, and field studies, the relations among ten kinds of V&S, which contain basic forms, response frequency, and amplitude, are summarized and discussed. Two evaluation methods are compared systematically, such as theoretical and measurement methods. Typical vibration measurement tools are investigated and discussed. The control technologies for drill string V&S are divided into passive control, active control, and semiactive control. Key methods for and critical equipment of three control types are compared. Based on the past development, a controlling program of drill string V&S is devised. Application technologies of the drill string V&S are discussed, such as improving the rate of penetration, controlling borehole trajectory, finding source of seismic while drilling, and reducing the friction of drill string. Related discussions and recommendations for evaluating, controlling, and applying the drill string V&S are made.
2004 •
Shock and Vibration
Nonlinear Model and Qualitative Analysis for Coupled Axial/Torsional Vibrations of Drill StringA nonlinear dynamics model and qualitative analysis are presented to study the key effective factors for coupled axial/torsional vibrations of a drill string, which is described as a simplified, equivalent, flexible shell under axial rotation. Here, after dimensionless processing, the mathematical models are obtained accounting for the coupling of axial and torsional vibrations using the nonlinear dynamics qualitative method, in which excitation loads and boundary conditions of the drill string are simplified to a rotating, flexible shell. The analysis of dynamics responses is performed by means of the Runge-Kutta-Fehlberg method, in which the rules that govern the changing of the torsional and axial excitation are revealed, and suggestions for engineering applications are also given. The simulation analysis shows that when the drill string is in a lower-speed rotation zone, the torsional excitation is the key factor in the coupling vibration, and increasing the torsional stress of ...
Techniques de sismique pendant forage avec mesures de fond, inaugurées par l'IFP et ses partenaires en 1990-2000-La sismique pendant forage (SWD), comprend toute technique opérée pendant que le train de tige est dans le puits, pendant le forage effectif ou pendant les manoeuvres d'ajout de tige ou de nettoyage. Deux techniques utilisées par l'industrie sont développées ici :-l'écoute sismique du trépan pendant forage (drillbit-SWD), usitée depuis 1986, qui consiste à enregistrer le signal avec un nombre indéfini de capteurs de surface, ainsi qu'un signal de référence représentatif des vibrations du trépan ;-le profil sismique vertical pendant forage (VSP-WD), qui consiste à enregistrer le signal émis par une source de surface avec un capteur sismique et un enregistreur intégrés à la garniture de forage (BHA). Cette technique émergente est opérée depuis l'année 2000 principalement par la société Schlumberger. Les deux techniques efficaces suivantes, assimilables à la sismique pendant le forage, ne seront pas dis-cutées ici :-la technique de VSP dans le tubage (TLC), en particulier le VSP au câble avec outil descendu au câble dans un tubing de production ou un train de tiges de forage ;-le « VSP intermédiaire », qui consiste à acquérir un VSP conventionnel au câble avant la pose et la cimentation d'un cuvelage (casing), afin d'affiner le calage du puits à la sismique de surface et de prédire les zones en surpression au-dessous du trépan. Les développements récents effectués par l'IFP et ses partenaires en sismique pendant forage ont bénéfi-cié de la technologie de transmission temps réel à haut débit par fils et tiges câblés du système TRAFOR, qui a permis d'exécuter rapidement des tests terrains cruciaux. Pendant la période 1986-2003, la pratique d'écoute sismique du trépan visait une utilisation continue sur la profondeur totale du forage, avec peu de capteurs de surface, et sans adjonction d'enregistreur de puits pendant le forage : cette technique a donné des résultats mitigés, quasi nuls avec les trépans de type PDC (Polycrystalline Diamond Cutter). Les meilleurs résultats ont été obtenus avec l'usage de trépan de type tricône, lors du forage de formations plutôt dures, en évitant des valeurs faibles pour les paramètres de poids sur outil (WOB) et vitesse de rotation (RPM). L'IFP a introduit dans la technique d'écoute sismique du trépan les innovations suivantes :-les mesures de fond pendant forage, afin de mieux comprendre le processus d'émission sismique du trépan ;-l'amélioration de l'architecture mécanique de la garniture (BHA) en intégrant un élément amortisseur permettant d'optimiser la qualité du signal source émis et de diminuer les émissions secondaires indésirables ; Interactive Drilling / Forage interactif D o s s i e r
2010 International Conference on Mechanical and Electrical Technology
Analysis of the method of Black box modeling of drill string dynamics by least squares methodJournal of Sound and Vibration
On the Effective Control of Torsional Vibrations in Drilling Systems1999 •
Archive of Applied Mechanics
Controlling torsional vibrations of drill strings via decomposition of traveling waves2012 •
Computational Mechanics
Computational modeling of the nonlinear stochastic dynamics of horizontal drillstrings2015 •
Mathematical Modelling and Analysis
Calculating Dispersion Relations for Waveguide Immersed in Perfect FluidNonlinear Dynamics
Drill-string vibration analysis using non-smooth dynamics approach2012 •
Journal of Sound and Vibration
Analysis of the energy transmission in spatial piping systems with heavy internal fluid loading2008 •
Acta acustica united with …
Wave propagation in a fluid filled rubber tube: Theoretical and experimental results for Korteweg's wave2007 •
Sensors
Detection, Localisation and Assessment of Defects in Pipes Using Guided Wave Techniques: A Review2018 •
Sensors (Basel, Switzerland)
Data communications using guided elastic waves by time reversal pulse position modulation: experimental study2013 •
International Journal of Engineering Research and Technology (IJERT)
IJERT-Finite Element Analysis for Control of Lateral and Torsional Vibrations in Drilling Directional and Multi-Lateral Wells2016 •
Journal of Low Frequency Noise, Vibration and Active Control
Fractional-order controllers for stick-slip vibration mitigation in oil well drill-stringsJournal of Sound and Vibration
Modeling and analysis of stick-slip and bit bounce in oil well drillstrings equipped with drag bits2014 •
Journal of Petroleum Exploration and Production Technology
Modeling of BHA dynamic behaviors2013 •
ICRACEM 2020, Indian Institute of Technology(IIT), Kharagpur
A Key to the Estimation of Important Features in the Hot Rolling of Steel: A Comparative Study between Empirical Model and Hybrid ANN Model using Genetic Algorithm2020 •
The Journal of the Acoustical Society of America
Prediction of flow induced sound and vibration of periodically stiffened plates2013 •
2013 •
Journal of Vibration and Acoustics
Wave Propagation in Periodically Supported Nanoribbons: A Nonlocal Elasticity Approach2013 •
Journal of Sound and Vibration
Vibration analysis of drillstrings with self-excited stick–slip oscillations2007 •
Journal of Sound and Vibration
Approaches to estimating the reflection and transmission coefficients of discontinuities in waveguides from measured data2007 •
2005 •
Marine Structures
A study of vibration and vibration control of ship structures2009 •