Coupled Axial and Transverse Vibrations of Oilwell Drillstrings

Yiğit, Ahmet S.; Christoforou, Andreas P.

doi:10.1006/jsvi.1996.0450

Cited by 105 publications

(60 citation statements)

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“…The coupled axial and transverse vibrations of a compliant tower were Chaos, Solitons and Fractals 14 (2002) www.elsevier.com/locate/chaos previously studied by Yigit and Christoforou [7], and Han and Benaroya [8,9]. Yigit and Christoforou studied the coupled vibration of the oil well drillstrings in compression.…”

Section: Introductionmentioning

confidence: 99%

Comparison of linear and nonlinear responses of a compliant tower to random wave forces

Han

Benaroya

2002

Chaos, Solitons & Fractals

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Section: Introductionmentioning

confidence: 99%

Comparison of linear and nonlinear responses of a compliant tower to random wave forces

Han

Benaroya

2002

Chaos, Solitons & Fractals

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“…Note that similar equations of motion and boundary conditions are obtained by Bottega [4], Yigit and Christoforou [5], and Adrezin [6,7]. Also note that Adrezin uses the Eulerian formulation instead of the Lagrangian formulation used in this paper.…”

Section: Equations Of Motion and Boundary Conditions Via Hamilton's Pmentioning

confidence: 60%

Non-Linear Coupled Transverse and Axial Vibration of a Compliant Structure, Part 1: Formulation and Free Vibration

Han

Benaroya

2000

Journal of Sound and Vibration

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“…Lateral vibration also damages the well when BHA large shocks impact the wellbore. Several attempts have been made to theoretically study drill pipe lateral vibration in order to overcome the difficulties encountered during drilling process (Berlioz et al 1996;Yigit and Christofourou 1996). Most of the mathematical models report slight progress in order to determine causes of drill pipe failure.…”

Section: Introductionmentioning

confidence: 99%

Design of a Testing Facility for Investigation of Drill Pipes Fatigue Failure

et al. 2017

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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. Lateral, torsion and axial are vibration modes that take place when drill pipes run into problems downhole. Due to the three modes of vibration mechanisms such as bit bounce, stick-slip, lateral shocks, bit and bottom hole assembly (BHA) whirl, parametric and torsional resonance occur. Understanding the causes of the destructive loads is the main step towards developing approaches to prevent or reduce their effects, hence improving drilling performance. Vibration modes and mechanisms lead to failure of the drill pipes, BHA and drill bits. Drill pipes fatigue failure is very common due to capability of producing all vibration modes and mechanisms. Drill pipe and downhole tool assembly failure usually result from failing to have power over one or more of these vibration mechanisms. A novel in house experimental setup has been developed to mimic downhole axial, lateral and torsional vibration modes and mechanisms in drilling operations. In this paper, we focus on the design and construction of the testing facility. A number of tests were conducted to validate the capability and performance of the test setup. Drill pipe fatigue failure due to lateral cyclic stresses induced in the drill pipe has also been investigated and presented in this paper. The results show that operating on a rotation speed higher than 90% of the drillstring critical speed leads to yielding in the drillstring.

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Coupled Axial and Transverse Vibrations of Oilwell Drillstrings

Cited by 105 publications

References 0 publications

Comparison of linear and nonlinear responses of a compliant tower to random wave forces

Comparison of linear and nonlinear responses of a compliant tower to random wave forces

Non-Linear Coupled Transverse and Axial Vibration of a Compliant Structure, Part 1: Formulation and Free Vibration

Design of a Testing Facility for Investigation of Drill Pipes Fatigue Failure

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