Results 71 to 80 of about 1,143,416 (115)

A review of vibration analysis and its applications. [PDF]

Heliyon
Chu T, Nguyen T, Yoo H, Wang J.
europepmc   +1 more source

An experimental study of embankment conditions on high-speed railway ground vibrations [PDF]

, 2013
Verlinden, Olivier, Forde, Mike, Kouroussis, Georges, Forde, Mike C, Connolly, David   +4 more
core  

Analysis of Postbuckling Drillstring Vibrations in Rotary Drilling of Extended-Reach Wells

Journal of Energy Resources Technology, Transactions of the ASME, 2011
One of the most serious concerns of extended-reach drilling is the dynamic behavior of the drillstring and the cleaning of well. Good cleaning requires an increased angular velocity.
V. Tikhonov, A. Safronov
exaly   +3 more sources

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Measurement and simulation of nonlinear drillstring stick–slip and whirling vibrations

International Journal of Non-Linear Mechanics, 2020
When drilling ultra-deep wells with polycrystalline diamond compact (PDC) bits, the drillstring suffered from severe vibrations that were responsible for the premature failure of drillstring components and the inefficient drilling process. In this paper,
Wenchang Wang
exaly   +2 more sources

Modeling of Rotary Drillstring Vibrations: An Overview

International Journal of Structural Stability and Dynamics
Yehia Khulief
exaly   +2 more sources

Intelligent Prediction of Downhole Drillstring Vibrations in Horizontal Wells by Employing Artificial Neural Network

Day 1 Wed, March 01, 2023, 2023
During the drilling operations and because of the harsh downhole drilling environment, the drill string suffered from downhole vibrations that affect the drilling operation and equipment.
Ramy Saadeldin, Hany Gamal, S. Elkatatny, A. Abdulraheem, D. A. Al Shehri   +4 more
semanticscholar   +1 more source

A New Test Rig for Experimental Studies of Drillstring Vibrations

SPE Drilling and Completion, 2015
Jörg Wallaschek
exaly   +2 more sources

Drilling Hard Abrasive Rock Formations with Differential Hydraulic Hammers: Dynamic Modeling of Drillstring Vibrations for ROP Optimization

Day 2 Wed, March 09, 2022, 2022
In deep oil, gas, and geothermal well construction, percussion drilling is sometimes used to improve rate of penetration (ROP) and promote drilling efficiency when breaking hard abrasive rocks (with a uniaxial compressive strength (UCS) > 25 kpsi ...
Yifan Zhang, Zeyu Yan, P. Ashok, Dong-Mei Chen, E. van Oort   +4 more
semanticscholar   +1 more source

Laboratory investigation of drillstring vibrations

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2009
Y. Khulief, F. Al-Sulaiman
exaly   +2 more sources

Downhole-friction-estimation-based rotary speed control for drillstring system with stick-slip vibrations

Asian Control Conference, 2017
Chao Gan, Chengda Lu, Wei-Hua Cao
exaly   +2 more sources