Community Research and Development Information Service - CORDIS


Deepwater Flowline and Riser Insulation Systems

Project ID: ENK6-CT-2000-00098
Funded under: FP5-EESD


The DeFRIS (Deepwater Flowline and Riser Insulation Systems) project has now completed its anticipated 36 month duration. During this period a thorough review of all aspects of flow assurance issues, to identify the key requirements of thermal insulation systems, was performed. Issues addressed included hydrate and wax control, shutdown time limits etc. An assessment of the requirements for performing flow assurance calculations was also made and target ranges of thermal performance for the thermal insulation systems have been identified. Comparisons of thermal performance with alternative systems are also made as part of this task.
While gathering information from industry end-users, it has been possible to establish a ready network through which project developments can be disseminated. To facilitate this dissemination an Internet based web-site has been established at;
This provides the opportunity for discussion of issues raised as the project advances and for downloading published summaries/reports. A further task has enabled a specification of the performance requirements for the thermal insulation systems to be developed. This task involved the identification of the operational requirements of the system. These operational requirements include structural, thermal and mechanical properties. An assessment is also made of the in-place loads to which the system will be subjected. A review of the options for installation and an identification of the installation performance requirements are also a requirement of this task. A full review of all aspects of thermal insulation systems has been performed as the first stage to development of empirical based software tools. These will allow easy and efficient design of global insulation systems. The software tool has been calibrated using the results of the local finite element analysis.

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