Numerical simulation of wax deposition in oil pipeline systems

A compositional flow model for predicting wax deposition in oil pipelines i s presented. Sample calculations as a function of time have been obtained b y a numerical solution to the two-dimensional heat and momentum equations, the laws of diffusion and a multisolid-wax thermodynamic model. Results sho w temperature, radial mass flux and wax deposition profiles as a function o f time and position in the pipeline. Details of the numerical impementation of this model are described.