Results 1 to 10 of about 981,350 (88)

Stick–slip vibrations in oil well drillstring: A review

open access: yesJournal of Low Frequency Noise Vibration and Active Control, 2020
A survey of the literature related to theoretical and experimental studies on stick–slip vibration in oilwell drillstring is carried out in this study. It aims to explain key concepts and present the existing methods for studying this phenomenon.
Xiaohua Zhu, Yun-Lai Zhou, Liping Tang
exaly   +3 more sources

Laboratory-Scale Drillstring Vibration Analysis

open access: yesMining
Drillstring vibrations are detrimental to drill bits and downhole equipment, affecting drilling efficiency and operational cost in severe drillstring vibration cases.
Mohammed Al Dushaishi
exaly   +4 more sources

Drillstring Oscillations: The Influence of Fluid Loading and Stabilizer Effects

open access: yesShock and Vibration, 2021
Drillstring vibrations can be undesirable for drilling operations. Here, attention is focused on vibrations of the upper portion of a drillstring as these vibrations can cause drillpipe wear and casing wear.
Yongsheng Liu   +4 more
doaj   +2 more sources

A Review of the Research and Development of High-Frequency Measurement Technologies Used for Nonlinear Dynamics of Drillstring

open access: yesShock 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   +2 more sources

Detecting downhole vibrations through drilling horizontal sections: machine learning study. [PDF]

open access: yesSci Rep, 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.
Saadeldin R, Gamal H, Elkatatny S.
europepmc   +2 more sources

Asymptotic Stabilization of Oilwell Drillstring Torsional and Axial Vibrations

open access: yesMathematics
This 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
doaj   +2 more sources

Robust Control of Drillstring Vibrations: Modeling, Estimation, and Real-Time Considerations

open access: yesApplied Sciences
This paper presents a comprehensive and hybrid control framework for the real-time regulation of drillstring systems that are subject to complex nonlinear dynamics, including torsional stick–slip oscillations, coupled axial vibrations, and intricate bit ...
Dan Sui, Jingkai Chen
doaj   +2 more sources

Calculation of drillstring vibrations in real time as part of training system

open access: yesVestnik Sankt-Peterburgskogo Universiteta, Prikladnaya Matematika, Informatika, Protsessy Upravleniya, 2017
Alexey Alexandrovich Malyugin   +1 more
exaly   +2 more sources

Drill‐bit position monitoring using seismic‐while‐drilling data; numerical and field examples from Sweden

open access: yesGeophysical 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

Drillstring Failure: Analytical and Experimental Approach [PDF]

open access: yesMATEC Web of Conferences, 2019
Drilling is one of the costliest activities in oil and gas industry due to the complexity of interactions with downhole rock formation. Under such conditions, the uncertainty of drillstring behaviour increase and hence it becomes difficult to predict the
Hassan Edris   +3 more
doaj   +1 more source

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