Modelisation du depot de paraffine lors d'un ecoulement ascendant de petrole

Abstract

A study on the upslope flow of heated petroleum paraffin was conducted based on motion equations and heat transfer, which were rewritten in a completely dimensionless form to analyze the influence of temperature on the position of the deposit point and its change over time. A numerical resolution of the new equation system, based on the Runge-Kutta 4th order method, was performed for two current practical cases to avoid the line obstruction problem.Uneétude sur l'écoulement ascendant de pétrole, chauffé et chargé en paraffine, est menée sur la base deséquations du mouvement et du transfert de chaleur. Ces dernières sont réécrites sous une forme adimensionnelle complète, afin d'analyser l'influence de la température sur la position du point de déposition et sonévolution en fonction du temps. Une résolution numérique du nouveau système d'équations, basée sur la méthode de Runge-Kutta d'ordre quatre, est réalisée pour deux cas pratiques courants afin de prévenir le problème d'obstruction des conduites.

Effect of the Latent Heat on Wax Deposit in Pipelines

“…Also, assuming that mass transport occurs in thin boundary layer, during the flow, Correra et al [6] have developed a mathematical model where the physical parameters (diffusivity and solubility) can be predicted by the use of experimental data. Boucetta and Kessal [7] have studied a heated waxy petroleum flow by writing the motion and heat transfer equations in a completely dimensionless form, in order to analyze the temperature effect on the wax deposit point and its time change. A numerical resolution of the new equation system, based on the fourth Runge-Kutta order method, was performed for two current practical cases where the obstruction of the duct is predicted.…”