Proceedings of the 15th International Conference on Manufacturing Systems – ICMaS

Published by Editura Academiei Române, ISSN 1842-3183

Vol. No. 1,  2006

"Politehnica" University of Bucharest, Machine and Manufacturing Systems Department

Bucharest, Romania, 26 – 27 October, 2006

Abstract: In this work the results of the researches carried out for the making and gauging of the loading captors used in the frame of the drilling string for tension-resistive experimental study of the dynamic loading in case of drill pipes of 10¾" during the mine shaft drilling, having a diameter of 3.62 m, are presented. The experimental conditions imposed special prescriptions for the making of these captors, in order for the disturbing factors not to influence the measurements. The realized captors allowed to carry out recordings in real time of the specific deformation of the drilling string under separate and total/ complex actions of the axial force, torsion and bending moments, and specific deformations of zones having stress concentrations, where cracks and breakages were produced. Also, they allowed the large diameter drilling process research, as a dynamic and vibratory process.

Eng. Simion PAREPA, Assist. Prof., Petroleum-Gas University

of Ploieºti, Oilfield and Petrochemical Equipment Department,

E-mail: sparepa @ mail. upg-ploiesti.ro