Excise
发表于 2025-3-23 12:50:56
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
间接
发表于 2025-3-23 17:16:13
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
发表于 2025-3-23 20:39:45
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
发表于 2025-3-24 01:10:25
http://reply.papertrans.cn/16/1562/156167/156167_14.png
咽下
发表于 2025-3-24 03:37:20
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
发表于 2025-3-24 06:46:28
http://reply.papertrans.cn/16/1562/156167/156167_16.png
nepotism
发表于 2025-3-24 12:15:03
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
发表于 2025-3-24 17:10:33
http://reply.papertrans.cn/16/1562/156167/156167_18.png
招待
发表于 2025-3-24 22:24:29
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
发表于 2025-3-25 01:12:31
http://reply.papertrans.cn/16/1562/156167/156167_20.png