Results 21 to 30 of about 1,167 (156)
Dynamic Reliability Analysis of Rotary Steering Drilling System [PDF]
Mechanical Sciences, 2019 Vibration and high shock are major factors in the failure of downhole tools. It is important to study the causes of vibration and shock formation to prevent failure of the drillstring and bottom hole assembly (BHA). At present, it is generally recognized
L. Huang +9 more
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Spectral Analysis of the Infinite-Dimensional Sonic Drillstring Dynamics
Mathematics, 2023 By deploying sonic drilling for soil structure fracturing in the presence of consolidated/ unconsolidated formations, this technique greatly reduces the friction on the drillstring and bit by using energetic resonance, a bit-bouncing high-frequency axial
Kaïs Ammari, Lotfi Beji
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Nonlinear Dynamics in Drilling Engineering
, 2021 Shock and Vibration, Volume 2021, Issue 1, 2021.
Qilong Xue +3 more
wiley +1 more source
Journal of Earth Energy Engineering, 2021 Drillstrings often vibrate severely and tend to twist off during hard rock drilling. Therefore, dynamic testing is crucial in the design of drilling systems. Designers tend to employ the most powerful analytical tools, using the most elaborate electronic
Mejbahul Sarker
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State Dependent Delayed Drill-string Vibration : Theory, Experiments and New Model [PDF]
, 2017 L.J. Pei would like to acknowledge NNSF of China (No.
Kapitaniak, Marcin Tomasz +4 more
core +1 more source
An efficient model of drillstring dynamics [PDF]
, 2015 This is the author accepted manuscript. The final version is available from Elsevier via http://dx.doi.org/10.1016/j.jsv.2015.06.033High amplitude vibration regimes can cause significant damage to oilwell drillstrings: torsional stick-slip oscillation ...
Butlin, T, Langley, RS
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Torsional vibrations of helically buckled drill-strings : Experiments and FE modelling [PDF]
, 2016 Acknowledgements The authors wish to thank Dr. Joseph Paez Chavez for his help in experimental work and acknowledge the financial support of BG Group plc.Peer reviewedPublisher ...
Hamaneh, V. V. +2 more
core +1 more source
Self-Attenuation of Drillstring Torsional Vibrations Using Distributed Dampers [PDF]
, 2023 During drilling operations, drillstring vibrations cause many downhole dysfunctions, resulting in underperformance, equipment failure, and possibly wellbore damage. Current drillstring vibration mitigation solutions are generally located at a single site,
Ambrus, Adrian, Cayeux, Eric
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Design of a Testing Facility for Investigation of Drill Pipes Fatigue Failure
The Journal of Engineering Research, 2017 Drillstring and down-hole tool failure usually results from failing to control one or more of the vibration mechanisms. The solution starts with the ability to measure different modes of vibration, hence identifying different vibration mechanisms ...
Jamil Abdo +3 more
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Universal response of optimal granular damping devices [PDF]
, 2012 Granular damping devices constitute an emerging technology for the attenuation of vibrations based on the dissipative nature of particle collisions. We show that the performance of such devices is independent of the material properties of the particles ...
Bai +26 more
core +2 more sources