Formalization of an approach structuree of modeling of one industrial system complexes by Petri nets: application to the oil systems of offshore oil rig production Ultra Deep seas

Formalization of a Structured Approach for the Modelling of a Complex Industrial System by the Use of Petri Nets: Application to Ultra Deep Oil Production Systems - The work presented in this paper aims to propose a methodology of modelling allowing to combine into a single model different processes (solicitation, failure, repair, supply, etc.) dealing with the main system but also with the logistic support system. The classical linear approach has to cope with a difficulty of modelling due to the complexity and the number of parameters of concern. Although the approach seems to be effective in term of results, the lack of structure reduces the confidence likely to be granted to the models and consequently implies an increased attention from the expert. In order to solve this problem, we propose a methodology leading to the building of Petri nets able to take into account both the physical aspects of the system and also more immaterial concepts related to actual strategies. The final goal of this approach is the global evaluation of the technico-economical performance of the system during its working period in order to identify the best solutions in term of system configuration and organization. The Petri nets modelling structured approach is first introduced before being applied to an industrial system.