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AbstractThe design and the operation of petroleum field facilities are facing technical challenges that require numerous and detailed simulations to optimize investments and maximize production. Such calculations rely on a global understanding of production processes that an integrated model from wellbore to topside facilities can supply. To develop such a model, seamless integration of third-party modeling and simulation technologies in a unique software platform is useful and even necessary in many cases.First, this paper presents the R&D Transient Integrated Networks Analysis (TINA) project that was set up by TOTAL and IFP to address user requirements in term of model coupling, problem solving and data consistency. The TINA's domain of application is design and verification of flowlines from well-bore to topside facilities with a compositional approach. To achieve this objective, the CAPE-OPEN industry standard defined for Computer Aided Process Engineering (CAPE) applications has been used within the INDISS TM platform. The project relies on this platform for integrating modules, on IFP's research knowledge for pipe flow calculations and on third-party software components. TOTAL has brought to the project their knowledge of network design end operational characteristics, as well as the definition of functional requirements of TINA. Validation against field data has also been a profitable input to the project.Then, this approach is illustrated through several examples integrating three-phase pipe models, valves and surface equipments and also third-party physical and thermodynamic property servers to simulate a deep-water production network.At last, the paper expresses that the integration of a physical properties calculation server together with advanced pipe models in a software platform dedicated to steady-state and transient simulation enables to simulate deep-water production networks without having to rely on one single simulation solution provider. The interchangeability allows the end-user to choose the most convenient software components for the purpose of a study, and the interoperability allows integrating the latest research improvements together with third-party software components into a global model.