Titlebook: Analysis and Control of Oilwell Drilling Vibrations; A Time-Delay Systems Martha Belem Saldivar Márquez,Islam Boussaada,Silv Book 2015 Spri

Excise

Stick-Slip Control: Lyapunov-Based Approacht eliminating the stick-slip phenomenon. Within the framework of Lyapunov theory, two control approaches based on different system representations are proposed. First, a switched model-based control is designed. Since the frictional torque on bit is usually modeled by a nonlinear function subject to

間接

Practical Stabilization of the Drilling Systemint of view, the system response may be considered acceptable. This idea gives rise to the notion of ultimate boundedness or practical stability, which allows characterizing the transient behavior of a perturbed system. Under the assumption that the drilling system is subject to external disturbance

extemporaneous

Performance Analysis of the Controllerssed control solutions stabilize the system, effectively suppressing the stick-slip and the bit-bounce, notwithstanding, it is important to provide a comparative analysis to highlight the advantages and vulnerabilities of each control method. This chapter presents a contrastive study of the system re

Allege

咽下

Introduction,urring during drilling operations: torsional (stick-slip), axial (bit-bounce) and lateral (whirling). It also presents the basics of a vertical drilling operation and a description of the system components. The scope and organization of the monograph is provided.

placebo-effect

nepotism

Methodologie und analytischer Rahmeny conditions involving a nonlinear term to represent the bit-rock contact from which undesirable vibrations arise. This chapter presents an accurate experience-based model of the frictional torque which considers the drilling surface characteristics and the bit geometry.

Junction

招待

https://doi.org/10.1007/978-3-642-47388-3string behaviors are also reviewed. Furthermore, the most popular tools used in oil platforms to dampen drillstring vibrations, the different methods used for acquiring, monitoring, and transmitting data from the downhole to the surface, and the innovative automated systems that improve the perforation process are addressed in this chapter.

aspersion