两边在扩散
发表于 2025-3-21 18:29:32
书目名称Analysis and Control of Oilwell Drilling Vibrations影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0156167<br><br> <br><br>书目名称Analysis and Control of Oilwell Drilling Vibrations读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0156167<br><br> <br><br>
突变
发表于 2025-3-21 23:19:28
An Overview of Drillstring Modelsis chapter presents a brief compilation of the most popular modeling strategies allowing the analysis and control of a vertical oilwell drilling system. Drilling models can be classified into three general categories: 1. Lumped parameter models which regard the drillstring as a mass-spring-damper sy
Spinal-Tap
发表于 2025-3-22 02:54:03
Bit-Rock Frictional Interfaceich empirically captures the interaction between the cutting device and the rock. An appropriate model of friction allows gaining insight into drillstring vibration phenomena thus characterizing the dynamic behavior at bit level and making possible the development of appropriate control strategies t
foodstuff
发表于 2025-3-22 07:01:53
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丰满有漂亮
发表于 2025-3-22 11:53:56
Neutral-Type Time-Delay Systems: Theoretical BackgroundDifferential Equations (ODE). A neutral-type time-delay equation also known as Neutral Functional Differential Equation (NFDE) describes a system in which the rate of change of the state depends not only on the present and past values of the system state but also on the earlier value of the state ra
cushion
发表于 2025-3-22 15:08:21
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吹牛需要艺术
发表于 2025-3-22 19:25:15
Ultimate Boundedness Analysistotic or exponential stability in the sense of Lyapunov) can be too restrictive. Namely, the state of a system may be mathematically unstable in some classical sense, but the response oscillates close enough to the equilibrium, to be considered as acceptable. In many stabilization problems, the aim
GLOOM
发表于 2025-3-22 22:12:20
Field Observations and Empirical Drilling Controlibrations. A detailed description of the three main types of drillstring vibrations (longitudinal, axial, and torsional) is presented in this chapter. Failures induced by drillstring vibrations lead to premature wear of the system components, breakage of drilling bits, unscrewing of pipe connections
翅膀拍动
发表于 2025-3-23 05:06:36
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right-atrium
发表于 2025-3-23 06:42:27
Flatness-Based Control of Drilling Vibrationssystem satisfying the flatness property is called a differentially flat system. The main attribute of flat systems is that the state and input variables can be directly expressed without integrating any differential equation, in terms of one particular set of variables called a flat output and a fin