Pigging problems are solved on site by an operatives, it is not even an engineering subject, there is nothing to analyze there, maybe amount of paraffin needed to plug the pipeline or something like that but as I know you cant do that with Pipesim with real PVT data, only thing you can simulate is inner diameter reduction due to paraffin formation. So you can take a well and its pipeline, and calculate wellhead pressure increase that will alarm you to pig the flowline...