ABS has joined a new study led by the Massachusetts Institute of Technology (MIT), stakeholders in the offshore industry and MathWorks to expand the use of artificial intelligence (AI) tools and machine learning methodologies to better predict riser motion
Targeted at the offshore sector, the study focuses on risers that connect subsea oil resources to surface assets. The study developed digital twins to better predict riser motion and enables offshore companies to optimise field sensor locations on their assets.
MIT’s Intelligent Towing Tank is prominently featured in the study, exploring vortex-induced vibrations (VIVs), which remain a phenomenon due to the high number of parameters involved.
Guided by active learning, the Intelligent Towing Tank was used to conduct a series of experiments. Using an ’explore-and-exploit’ methodology, the algorithm-based system dramatically reduced the number of experiments required to explore and map the complex forces governing VIVs.
The uncertainty of the predicted riser VIV motion is quantified, and a procedure is developed to process multi-terabyte field datasets for digital twin use, using physics-informed neural networks and multi-fidelity methods to incorporate multiple models of different fidelity.
“This is an exciting time for innovation and technology breakthroughs in the offshore industry. As a safety-focused organisation operating at the forefront of these technologies, ABS is able to share the insight we have learned with world-class research institutions like MIT to support the adoption of new tools and systems that improve both safety and performance,” said ABS senior vice president and chief technical officer, Patrick Ryan.
MIT Professor of mechanical and ocean engineering Michael Triantafyllou said, “Artificial intelligence methods have become an essential tool for design and operation of complex systems, and digital twins provide unprecedented capability to explore the parametric space. As we are dedicated to developing powerful AI tools for the offshore industry, we are excited to collaborate with ABS to share the technology across the industry.”
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