Results 21 to 30 of about 1,143,416 (115)
Petroleum, 2022 The self-excited stick-slip oscillations of oilwell drillstrings are attributed to the nonlinear interaction between the drill-bit and the rock formation.
Mohammed Y.A. Alkaragoolee, David Bryant
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Vibration, 2022 The drilling process is among the most crucial steps in exploration and production activities in the petroleum industry. It consists of using mechanical mechanisms to crush rocks by the drill bit to pass through the different geological layers. The drill-
Rami Riane +3 more
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Comparing Advanced Control Strategies to Eliminate Stick-Slip Oscillations in Drillstrings
IEEE Access, 2022 In this paper, we present three methods to achieve reliable drillbit angular velocity control for deep drilling operations. We consider a multi-sectional drilling system with the bit off-bottom, which represents the system at the start-up of a drilling ...
Jean Auriol +4 more
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Vibration analysis of simultaneous drilling and reaming BHA
Journal of Petroleum Exploration and Production Technology, 2020 The drillstring used in the oil and gas exploration is a complex structure due to the different forces acting on it. One of the primary sources of drillstring vibrations is the cutting forces caused by the drill bit contact with the rock formation.
Mohammed F. Al Dushaishi +1 more
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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
Dynamic Model and Quantitative Analysis of Stick‐Slip Vibration in Horizontal Well
Shock and Vibration, Volume 2020, Issue 1, 2020., 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. The drillstring‐borehole impact and friction, fluid‐structure interaction, bit‐rock interaction, and gravity are considered in this model. The influence of axial and
Baojin Wang +3 more
wiley +1 more source
Influence of low frequency vibrations on drillstring dynamics [PDF]
, 2014 During the drilling process, between the drilling bit that ruins the rock in the bottom-hole and the energy source located on the ground surface is the drillstring that has certain length and small cross cuts that define the dynamics of the drilling bit ...
Chernova, M, YE
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On the formation of limit cycle of the friction-induced stick-slip vibration in oilwell drillstring
Petroleum, 2015 In this paper, the stick-slip vibration in oilwell drillstring is studied. The drilling system is modelled as a lumped-parameter torsional pendulum and the interaction between the drill bit and the rock is treated as Coulomb friction.
Xiaohua Zhu, Liping Tang
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DIAGNOSTIC AND PERFORMANCE ANALYSIS OF DRILLSTRING VIBRATIONS IN ZUBAIR FIELD [PDF]
Romanian Journal of Petroleum & Gas Technology, 2020 In order to improve the drilling performance and prevent the drillstring damage, it is required to reduce the drilling vibrations of wells. Consequently, the main aim of paper is to diagnose and analyze the drilling vibrations for Zubair field wells ...
Hussein Al Gburi +3 more
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Drillstring Vibrations - Identification, Classification and Mitigation [PDF]
, 2020 Denne masteroppgaven bygger på arbeidet fra prosjektoppgaven i faget TPG4560. Noen deler er tatt direkte fra prosjektoppgaven, kalt «Drillstring Vibrations: A Theoretical Foundation». Masteroppgaven var skrevet i samarbeid med Aker BP, et operatørselskap
Berntsen, Mads
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