Buckling of Tubulars in Simulated Field Conditions

First, this paper presents the new developments integrated in a recently advanced model for drillstring mechanics and takes into account the buckling phenomenon in any actual well trajectory. Second, this paper shows the influence of tortuosity and friction on the buckling phenomenon for some practical and critical cases met in the drilling industry. These tortuosity and friction effects are demonstrated with an experimental setup that confirms theoretical features. Finally, we compare results obtained from existant models with results obtained from our new model to evaluate the tortuosity and friction effects on the critical buckling load found in the literature.