Results 11 to 20 of about 4,548 (230)
Shock and Vibration, 2021 High-frequency measurements can provide much more new insights for drillstring dynamics compared to traditional instruments, leading to a new realm of understanding of drillstring behaviors in great detail than before.
Lixin Li +6 more
doaj +3 more sources
Analysis of the Effect of Whirl on Drillstring Fatigue
Shock and Vibration, 2021 There are many kinds of vibration forms of drillstring in petroleum drilling. Whirl is one of the main vibration modes when drilling tools are drilling, and it is also the main reason of fatigue failure of the drillstring.
Chong Wang +4 more
doaj +2 more sources
Dynamic Model and Quantitative Analysis of Stick-Slip Vibration in Horizontal Well
Shock and Vibration, 2020 Stick-slip is very harmful to the service life of drillstring. The extended Hamilton principle is applied in the paper. Then, finite element method (FEM) is employed to describe the model.
Baojin Wang, Zhongyang Wang, Fushen Ren
doaj +2 more sources
Laboratory-Scale Drillstring Vibration Analysis
MiningDrillstring vibrations are detrimental to drill bits and downhole equipment, affecting drilling efficiency and operational cost in severe drillstring vibration cases.
Eshan K. Maitra +1 more
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Shock and Vibration, 2014 In the oil industry, the accompanied reverberation is a major constraint in the transmission rate and distance because the drillstring is a heterogeneous assembly.
Li Cheng +3 more
doaj +2 more sources
Analysis on the dynamics of flexible drillstring under different drilling parameters
Frontiers in Earth ScienceDuring the operation of the drill string, it displays a degree of flexibility. Simultaneously, its dynamic properties, influenced by complex stress conditions, manifest nonlinearity and uncertainty.
Jifei Cao +8 more
doaj +2 more sources
Asymptotic Stabilization of Oilwell Drillstring Torsional and Axial Vibrations
MathematicsThis paper takes as its starting point the distributed parameter models for both torsional and axial vibrations of the oilwell drillstring. While integrating several accepted features, the considered models are deduced following the Hamilton variational ...
Daniela Danciu, Vladimir Răsvan
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Shock and Vibration, 2014 A new method of wireless data telemetry used by oil industry uses compressional acoustic waves to transmit downhole information from the bottom hole to the surface.
Li Cheng +4 more
doaj +2 more sources
Investigating Drillstring Vibration and Stability in Coring Drilling
Energies, 2022 Transverse vibration of drillpipe in coring drilling is undesirable. Here, the influence of the core on drillpipe vibration is considered for the first time.
Yuchen Sun +5 more
doaj +2 more sources
Geophysical Prospecting, Volume 71, Issue 7, Page 1338-1355, September 2023., 2023 Abstract The undesired drill‐bit deviation is a source of drilling risks and requires monitoring. Seismic‐while‐drilling is one potential method to achieve this and has been tested in a number of previous studies. In August 2020 in Örebro, Sweden, we conducted an experiment to test the feasibility of seismic‐while‐drilling drill‐bit positioning and ...
Zbigniew Wilczynski +3 more
wiley +1 more source