Parametric study of a tubing string buckling model with friction in petroleum wells

Resumo

This work presents a parametric study of a buckling model with friction applied to tubing strings while
production or injection of fluids occurs in a petroleum well. The tubing buckling can lead to structure failure,
and to new regions of contact between the string and the casing. In these regions, frictional forces seem to have
an important impact on the tubing elongation. In addition, ignoring friction might not be a conservative design
strategy. To achieve the proposed objective, the adopted methodology is divided into three main stages: i) study
of buckling models with friction for tubing strings; ii) implementation and validation of the chosen model; iii)
definition of the scenario and variables for the parametric study, such as tubing and casing diameters and well
depths. The main contribution of this work is quantifying how friction’s relevance on buckling varies with tubing
and casing diameters.