3D Modeling Improves Deepwater Umbilical Design Dependability

摘要

Until recently, interactions between the internal components of an umbilical have been more or less neglected in modeling for fatigue prediction. In deeper waters, and with larger umbilicals, such interactions can contribute significantly to creating the conditions for umbilical failure. A new approach to deepwater umbilical design combines proven global systems models with more complex 3D models to capture local stresses and contact between internal components. This new approach to modeling umbilical behaviour goes beyond the traditional, cross-sectional analysis to encompass 3D lengths. From design through to operation, the 3D modeling approach gives clients a deeper understanding of umbilical performance and the technical risks they face. As a result, decision making about design and installation is more informed, even in highly challenging environments. This presentation discusses the process of 3D modeling, highlighting ground-breaking improvements on current designs. It cites successful pilot case studies, such as the recent verification of the F56 umbilical installed on the world's deepest producing field, where the need for accurate assessment of both strength and fatigue criteria was satisfied by the application of the 3D modeling capability. The presentation provides a compelling insight into a revolutionary new deepsea technology.