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Nonlinear Drillstring Dynamics Analysis [PDF]

SIAM Journal on Applied Dynamical Systems, 2009
This paper studies the dynamical response of a rotary drilling system with a drag bit, using a lumped parameter model that takes into consideration the axial and torsional vibration modes of the bit. These vibrations are coupled through a bit-rock interaction law.
Nathan van de Wouw, Henk Nijmeijer, Rodolphe Sépulchre   +2 more
exaly   +2 more sources

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Modeling of torsional oscillation of drillstring dynamics

Nonlinear Dynamics, 2019
Drillstring vibration is an important cause of precocious failure of drilling, and torsional vibration is a particular important phenomenon. Stick/slip is a severe type of torsional drillstring oscillation that affects the efficiency of the drilling process and can cause bit damage as well as drillstring failure.
Qilong Xue, Henry Leung
exaly   +2 more sources

Analytical and numerical studies of sonic drillstring dynamics

2016 24th Mediterranean Conference on Control and Automation (MED), 2016
In tunnel excavation, according to a geological shooting map for underground support, drilling of holes with limited depth is necessary. Machines with drillstring resonant frequency based input had proved their effectiveness in soil penetration. Finite element analysis (FEA) is commonly used to understand a drillstring dynamic behavior.
Mnafeg, Ibrahim, Abichou, Azgal, Beji, Lotfi   +2 more
openaire   +1 more source

DYNAMIC MODELLING OF ROTATING DRILLSTRINGS WITH BOREHOLE INTERACTIONS

Journal of Sound and Vibration, 1997
Abstract A dynamic model for the axial and transverse vibrations of a rotating drillstring is presented. The governing non-linear equations, which are obtained by using a Lagrangian approach, are fully coupled with time varying coefficients. They include the effects of gyroscopic moments, contact with the borehole wall, axial excitation due to bit ...
Christoforou, A.P., Yigit, AHMET SALİH
openaire   +2 more sources

Stick-slip Whirl Interaction in Drillstring Dynamics

Journal of Vibration and Acoustics, 2002
Abstract This paper attempts to explain the complicated behavior of oilwell drillstring motion when both torsional stick-slip and lateral whirl vibration are involved. It is demonstrated that the observed phenomena in experimental drillstring data could be due to the fluid forces of the drilling mud. A Stick-slip Whirl Model is presented
Leine, R.I., Campen, van, D.H., Keultjes, W.J.G.   +2 more
openaire   +2 more sources

Finite element dynamic analysis of drillstrings

Finite Elements in Analysis and Design, 2005
Field experience manifests that drillstring vibration is one of the major causes for a deteriorated drilling performance. It is crucial to understand the complex vibrational mechanisms experienced by a drilling system in order to better control its functional operation and improve its performance.
Y.A. Khulief, H. Al-Naser
openaire   +1 more source

Stick-Slip Whirl Interaction in Drillstring Dynamics

Solid Mechanics and Its Applications, 2005
D H Van Campen, D H Van Campen
exaly   +2 more sources

Drillstring Dynamics During Jar Operation

Journal of Petroleum Technology, 1979
An analytical model, based on plane wave propagation through a distributed mass representation of the drillstring, has been developed to investigate jarring. Overpull, jar stroke, jar placement, and collar and pipe dimensions are related to predict impact time, speed, and force, along with stress history at the stuck point and impulse delivered to the ...
Marcus R. Skeem, Morton B. Friedman, Bruce H. Walker   +2 more
openaire   +1 more source

Directional Drillstring Dynamics

2008
A rotating rod under load may execute vibration in different ways: transversal (bending), longitudinal (axial), torsional, or a combination of any of those. In this article, the dynamics of a rotating directional drilling system, constrained to rotate in a borehole, is investigated using the finite element formulation.
Fredy Coral Alamo, Hans Ingo Weber, Harry Saavedra Espinoza   +2 more
openaire   +1 more source

A Multibody Dynamical Model for Full Hole Drillstring Dynamics

Applied Mechanics and Materials, 2013
The research on drillstring dynamics is necessary for improving drilling efficiency and safety. In this investigation, a multibody dynamical model for 3D full hole drillstring system is presented based on the Absolute Nodal Coordinate Formulation (ANCF). The drillstring is modeled with the ANCF beam element. The absolute nodal coordinate formulation of
Zai Bin Cheng, Wei Jiang, Ge Xue Ren, Jian Liang Zhou, Shi Quan Jiang, Cai Jin Yang, Bao Sheng He   +6 more
openaire   +1 more source