Research on Stick-slip Vibration Level Estimation of Drillstring Based on SVM
Shiyou jixie, 2019 To evaluate the severity of stick-slip vibration of drill string, a risk assessment method based on factor analysis (FA) and support vector machine (SVM) is proposed.
Chen Chong +4 more
doaj
Dynamic Modeling of Directional Drillstring: A Linearized Model Considering Well Profile
, 2017 Drillstring vibration can cause fatigue failure of the drill pipe, premature wear of the bit, and a decreased drilling efficiency; therefore, it is important to accurately model the drillstring and bottomhole assembly (BHA) dynamics for vibration ...
Dongmei Chen, Tianheng Feng, Inho Kim
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Fuzzy Adaptive PID Controller for Stick-Slip Vibration of Drillstring
Shiyou jixieThe destructive stick-slip vibration of the drillstring in deep drilling will cause serious obstacles to well drilling and production， and has always been a challenge without appropriate solution due to its strong nonlinearity and uncertainties.
Luo Jie Liu Jun Zhou Xinzhong Li Qiang Zhang Yi
doaj
Design and development of an experimental set up to measure buckling and lateral vibration of drillstring in oil drilling operation / Mohd Zul Helmie Abu Kasim [PDF]
, 2009 Drillstring vibrations are one of the causes of premature failure in drillstring drilling operation. The most vital vibration mode is lateral vibration.
Abu Kasim, Mohd Zul Helmie
core
Design and development of an experimental set up to measure buckling and lateral vibration of drillstring in oil drilling operation / Mohd Zul Helmie Abu Kasim [PDF]
, 2008 Drillstring vibrations are one of the causes of premature failure in drillstring drilling operation. The most vital vibration mode is lateral vibration.
Abu Kasim, Mohd Zul Helmie
core
A Lyapunov Exponent Approach for Identifying Chaotic Behavior in a Finite Element Based Drillstring Vibration Model [PDF]
, 2009 The purpose of this work is to present a methodology to predict vibrations of drilllstrings for oil recovery service. The work extends a previous model of the drill collar between two stabilizers in the literature to include drill collar flexibility ...
Mongkolcheep, Kathira
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ON ACTIVE SYNCHROPHASING CONTROL OF VIBRATION FOR A FLOATING RAFT VIBRATION ISOLATION SYSTEM
, 2015 A floating raft vibration isolation system installed on a flexible hull-like structure is described in this paper. Four vibration exciters, in which two counter rotating shafts with the same balanced masses are driven by a phase asynchronous motor, are ...
Luzzi, S. +11 more
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Downhole Applications of Magnetic Sensors. [PDF]
Sensors (Basel), 2017 Gooneratne CP, Li B, Moellendick TE.
europepmc +1 more source
Vibration-induced white finger in dockyard employees
, 1992 Vibration-induced white finger (VWF) is a vascular condition associated with occupational exposure to hand-transmitted vibration. The fingers are prone to intermittent blanching attacks which may be triggered by cold conditions and are usually ...
Nelson, Christopher Mark
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Controlling vibration propagation in a thin beam using a neutraliser
This paper is concerned with the control of vibration transmission along a thin beam using a vibration neutraliser. The analysis focuses on the case where the position of the neutraliser is constrained such that it cannot be at the source or the receiver,
Mace, Brian R. +5 more
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