Campbell diagram computation for a drillstring immersed in curved wells

[+] Author and Article Information
Khac-Long Nguyen

27bis, Avenue Jean Capelle VILLEURBANNE, 69621 France khac-long.nguyen@insa-lyon.fr

Quang-Thinh Tran

27bis, Avenue Jean Capelle Villeurbanne, Rhône 69621 France quang-thinh.tran@insa-lyon.fr

Marie Ange Andrianoely

27 Bis Avenue Jean Capelle Villeurbanne, Rhone Alpes 69100 France marie-ange.andrianoely@insa-lyon.fr

Lionel Manin

27bis Avenue Jean Capelle - Bat. S. Germain INSA-Lyon, LaMCoS Villeurbanne, Rhone 69621 France lionel.manin@insa-lyon.fr

Régis Dufour

Bâtiment Jean d'Alembert, 8 Rue des Sciences Villeurbanne, FRANCE 69621 France regis.dufour@insa-lyon.fr

Stéphane Menand

6 Rue Emile Decorps Villeurbanne, 69100 France stephane.menand@drillscan.com

Mohamed Mahjoub

26 Rue Emile Decorps Villeurbanne, 69100 France mohamed.mahjoub@drillscan.com

1Corresponding author.

Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the Journal of Vibration and Acoustics. Manuscript received October 26, 2018; final manuscript received February 7, 2019; published online xx xx, xxxx. Assoc. Editor: Stefano Lenci.

ASME doi:10.1115/1.4042933 History: Received October 26, 2018; Accepted February 11, 2019


The drilling operations use a rotary slenderness structure introduced inside the drill well. The nonlinear dynamics with bit-bounce, stick-slip phenomena, pulsating mud flow may yield the premature wear and damage of drilling equipment and should be investigated to improve the reliability of drilling operations. This work presents the beam element formulation to model the drilling nonlinear dynamics. The well-pipes contacts are modeled by the radial elastic stops. The fluid-structure interactions are considered. The first step consists in computing the static position of structure to determine the contact points and calculate the pre-loaded state. These results are then considered to calculate the Campbell diagram. The potential unstable speeds of rotation are identified. The results show that the modal coupling phenomena strongly occur for the 3D well. The well-pipes contacts modify the modes in rotation and the rotating fluid induces a strong deviation of the flexural mode curves.

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